85th Annual Meeting of The Meteoritical Society

August 14–19, 2022

 

Program

 

Times listed are British Summer Time (BST).

Find your local time here.

 

WORKSHOPS

Saturday and Sunday Morning, August 13–14, 2022

9:00 a.m.

University of Glasgow
Molema Building, Room TBD

Workshop: Fireballs and Their Detection

 

 

Sunday Morning, August 14, 2022

9:00 a.m.

 

University of Glasgow
Molema Building, Room TBD

Workshop: Back to the Future: Major Findings in the Field of Impact Cratering and Unresolved Issues

University of Glasgow
Molema Building, Room TBD

Workshop: Atom Probe Tomography and Correlative Microscopy of Meteorites and Returned Planetary Materials

 

85th METEORITICAL SOCIETY

Monday, August 15, 2022

 

8:30 a.m.

 

Lomond Auditorium

Award Ceremony

1:30 p.m.

 

Alsh

Special Multi-Topic Session in Honor of Ed Scott

Boisdale

Impacts I: Impact Glass and Shock Deformation Features

3:35 p.m.

 

Boisdale

Impacts II: Confirming and Dating Terrestrial Impact Structures

6:00 p.m.

 

Lomond Auditorium

Barringer Lecture

Tuesday, August 16, 2022
8:45 a.m.

 

Boisdale

Moon

9:00 a.m.

 

Alsh

Carbonaceous Chondrites I

10:40 a.m.

 

Alsh

Organics and Ices

2:00 p.m.

 

Alsh

Special Session: Samples and Observations of Ryugu, Bennu, and Psyche I

Boisdale

Melted Meteorites: It's All How You Differentiate It

5:30 p.m.

 

Boisdale

Virtual Poster Session I

6:30 p.m.

 

Poster Hall Two

Poster Session I:  Presolar Grains

 

Poster Session I:  Organics and Ices

 

Poster Session I:  Melted Meteorites: It's All How You Differentiate It

 

Poster Session I:  Chondrules

 

Poster Session I:  Special Session: Samples and Observations of Ryugu, Bennu, and Psyche

 

Poster Session I:  Special Session: Recovery of Freshly Fallen Meteorites

 

Poster Session I:  Meteorite Curation, Education and Outreach

 

Poster Session I:  Moon

 

Poster Session I:  Impacts I

Wednesday Morning, August 17, 2022

 

8:30 a.m.

 

Boisdale

Presolar Grains

8:45 a.m.

 

Alsh

Special Session: Recovery of Freshly Fallen Meteorites

10:35 a.m.

 

Alsh

Curation, Education and Outreach

Boisdale

Chondrules

Thursday Morning, August 18, 2022

9:00 a.m.

 

Alsh

Mars

Boisdale

Carbonaceous Chondrites II

12:45 p.m.

 

Boisdale

Meteoritical Society Business Meeting

2:00 p.m.

 

Alsh

Impacts III: A Scottish Impactite and Recent Developments in Modelling

Boisdale

Special Session: Samples and Observations of Ryugu, Bennu, and Psyche II

3:35 p.m.

 

Alsh

Impacts IV: A Potpourri of Impact Processes from Projectile Components to Polymict Breccias

5:35 p.m.

 

Boisdale

Virtual Poster Session II

6:30 p.m.

 

Poster Hall Two

Poster Session II:  Early Solar System Records

 

Poster Session II:  Refractory Inclusions

 

Poster Session II:  Micrometeorites and IDPs, but Not Just That

 

Poster Session II:  Chondrites

 

Poster Session II:  Carbonaceous Chondrites

 

Poster Session II:  Space Weathering: The Forecast Calls for Solar Wind and Impacts

 

Poster Session II:  Missions and Small Bodies

 

Poster Session II:  Mars

 

Poster Session II:  Impacts II

Friday Morning, August 19, 2022

9:00 a.m.

 

Alsh

Space Weathering: The Forecast Calls for Solar Wind and Impacts

Boisdale

Chondrites

11:05 a.m.

 

Alsh

Micrometeorites and Interplanetary Dust Particles: Cosmochemistry, Flux and Collection

1:45 p.m.

 

Alsh

Missions and Small Bodies

2:00 p.m.

 

Boisdale

Refractory Inclusions: Some of the Solar System's Hottest Objects

3:50 p.m.

 

Alsh

Mars and Astrobiology

Boisdale

Early Solar System Records

 

 

Pre- Meeting Workshops

 

The pre-meeting workshops University of Glasgow, Molema Building

 

Workshop 1

Saturday, August 13–14, 2022

FIREBALLS AND THEIR DETECTION

9:00 a.m.   Room TBD

 

Workshop 2

Sunday, August 14, 2022

BACK TO THE FUTURE: MAJOR FINDINGS IN THE FIELD OF IMPACT CRATERING AND UNRESOLVED ISSUES

9:00 a.m.   Room TBD

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

 

Opening of Room/Uploading Presentation

9:30 a.m.

Ferrière L.  Reimold W. U. *

Welcome and Introduction

9:35 a.m.

Osinski G. R. *

Field Studies of Terrestrial Impact Structures [#6136]
In this contribution, I provide an up-to-date review and synthesis of the impact cratering record on Earth, with an emphasis on the major findings related to field studies at terrestrial impact structures.

10:05 a.m.

Collins G. S. *

Making an Impact: Advances in Numerical Modelling of Impact Cratering on Rocky Planetary Surfaces [#6277]
A review of advances in our understanding of the impact process driven by recent evolution and application of numerical impact simulations.

10:35 a.m.

Hamann C. *

Let’s Make Some Impact(s)! An Overview of Impact and Shock-Wave Experiments for Planetary Scientists. [#6459]
Shock-wave experiments are used to study shock compression of condensed matter, shock metamorphism of planetary materials, and various aspects of impact-crater formation. Typical experimental techniques and applications are summarized and discussed.

11:05 a.m.

 

Break

11:30 a.m.

Alwmark S. *  Ferrière L.

Always in Style — Shocked Quartz Past, Present, and Beyond [#6233]
We review the current state of knowledge about shocked quartz and discuss outstanding questions that are in need of further scientific attention.

12:00 p.m.

Cavosie A. J. *

The Kardashians of Shocked Minerals — Catching Up with Trends in Accessory Mineral Studies [#6270]
Accessory minerals provide key information to unravel the impact history of shocked rocks. This presentation will discuss a selection of contemporary aspects related to shocked accessory minerals.

12:30 p.m.

Goderis S. *

Refining the Nature of the Projectile Components Preserved Within Terrestrial Impact Structures and Ejecta, and Their Link to Astronomical Events [#6484]
Extraterrestrial contributions in terrestrial impact structures and ejecta materials can be traced through the application of specific geochemical and isotopic proxies, and used to identify projectile types and source regions in the solar system.

1:00 p.m.

 

Lunch

2:00 p.m.

Kenny G. G. *

The Chronological Record of Impact Cratering (Crater Structures and Ejecta) on Earth – What We Know and What We Don’t Know [#6128]
Here I will provide an overview of (i) what we know regarding the timing of impacts on Earth, (ii) methods used to date impacts, and (iii) what we don’t know and what I consider the most critical unanswered questions and areas for future research.

2:30 p.m.

Hecht L. *

The Formation and Emplacement of Suevite — A Review of Genetic Models and Unresolved Issues [#6434]
Suevite reveals important information on the cratering process. In this contribution to the Impact Cratering Workshop, the main existing genetic models of suevite formation will be reviewed and unresolved issues discussed, with some examples.

3:00 p.m.

Koeberl C. *

A Brief Review of (Mostly) Distal Impact Ejecta on Earth [#6307]
This is a review of distal impact ejecta, invited for the impact workshop.

3:30 p.m.

Morgan J. V. *  Artemieva N.

Formation of the K-Pg Boundary Layer [#6135]
Although it is widely agreed that the global K-Pg layer contains ejecta from the Chicxulub impact, the mode of ejecta transport remains enigmatic. We show that interaction between the atmosphere and ejecta leads to the formation of a fast-moving cloud.

3:45 p.m.

Gulick S. P. S. *  Morgan J. V.

Drilling the K-Pg Chicxulub Crater Peak Ring: Insights and More Questions [#6214]
Summary of IODP-ICDP Expedition 364 Drilling the K-Pg Chicxulub Impact Crater results and new questions to consider.

4:00 p.m.

Kenkmann T. *  Mueller L.  Sturm S.  Fraser A.  Cook D.  Sundell K.  Rae A. S. P.

So Many Impact Craters in Southeastern Wyoming: Secondary Cratering on Earth [#6204]
A large number of small impact structures have recently been discovered in Wyoming. We present crater morphologies obtained from drone imagery and deformation microstructures as well as results from ballistic modeling and crater simulations.

4:15 p.m.

 

Open Discussion and Concluding Remarks

4:30 p.m.

 

Adjourn

 

Workshop 3

Sunday, August 14, 2022

ATOM PROBE TOMOGRAPHY AND CORRELATIVE MICROSCOPY OF METEORITES AND RETURNED PLANETARY MATERIALS

9:00 a.m.   Room TBD

This workshop will provide an overview of the latest developments in atom probe tomography (APT), and its application to planetary materials as part of correlative microscopy workflows in order to broaden awareness of the possibilities provided by APT and correlative microscopy, and to connect researchers with different backgrounds to stimulate new collaborations

Chairs:  Luke Daly and James Darling

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

 

Welcome Tea and Coffee

9:20 a.m.

Daly L. *

Welcome Address

9:30 a.m.

White L. *

History of Atom Probe Tomography in Planetary Science

9:50 a.m.

McCarroll I. *

Site Specific Atom Probe Sample Preparation with a Focussed Ion Beam (Ga, Plasma and Cryo)

10:10 a.m.

Villalon K. *

APT Applications: Isotopic Aanalysis

10:30 a.m.

Greer J. *

APT Applications: Water Volatiles and Space Weather

10:50 a.m.

Einsle J. *

Macro-Micro: APTs Place in a Correlative Microscopy Pipeline

11:10 a.m.

 

Break

11:30 a.m.

 

Flash Talks by Attendees

12:00 p.m.

 

Lunch

1:00 p.m.

 

Lab Tour of the University of Glasgow’s Electron Microscopy Facilities

1:45 p.m.

CAMECA/Reinhard D. *

Processing and Interrogating Atom Probe Data with the AP Suite 6 Software

2:15 p.m.

CAMECA/Reinhard D. *

Hands on Tutorial on the AP Suite 6 Software

3:45 p.m.

TBD *

Panel Discussion on Future Developments and Applications for Atom Probe Tomography

 

BACK TO TOP

 

85th Annual Meeting of The Meteoritical Society

 

Oral and poster sessions, plenary sessions, and the Barringer Invitational Lecture, will take place within the Loch Suite of the Scottish Event Campus: https://www.sec.co.uk/organise-an-event/event-spaces/loch-suite.

 

Monday, August 15, 2022

AWARD CEREMONY

8:30 a.m.   Lomond Auditorium

Meteoritical Society medals and awards

Chairs:  Brigitte Zanda

Times

Presenter

Presentation

8:30 a.m.

Zanda B. *

Opening Remarks

8:40 a.m.

Chaussidon M. *

Citation and Acceptance for Kevin McKeegan for the 2022 Leonard Medal

8:50 a.m.

Ferrière L. *

Citation and Acceptance for Gordon Osinski for the 2021 Barringer Award

9:05 a.m.

Kenkmann T. *

Citation and Acceptance for Gareth Collins and Kai Wünnemann for the 2022 Barringer Award

9:20 a.m.

McSween H. *

Citation and Acceptance for Arya Udry for the 2022 Nier Prize

9:30 a.m.

Zeigler R. *

Citation and Acceptance for Randy Korotev for the 2022 Service Medal

9:40 a.m.

Zanda B. *  Stephan T. *

Introduction of the Jessberger Award

9:50 a.m.

Wieler R. *

Citation and Acceptance for Maria Schönbächler for the 2021 Jessberger Award

10:00 a.m.

Zanda B. *

Presentation of the 2022 Fellows

10:30 a.m.

McKeegan K. *

Leonard Medal Presentation

11:30 a.m.

Osinski G. *

2021 Barringer Medal Presentation

12:00 p.m.

Collins G *. and Wünnemann K. *

2022 Barringer Medal Presentation

 

BACK TO TOP

 

Monday, August 15, 2022

SPECIAL MULTI-TOPIC SESSION IN HONOR OF ED SCOTT

1:30 p.m.   Alsh

This multi-topic session aims to reflect Ed Scott’s enormous range of meteoritical interests and contributions.

Chairs:  Alex Ruzicka and Emma Bullock

Times

Authors (*Presenter)

Abstract Title and Summary

1:30 p.m.

Sanders I. S. *  Scott E. R. D.  Asphaug E.

Does the Puzzling ‘Eclogitic’ Clast from the CR2 Chondrite, Northwest Africa 801, Record a Hit-And-Run Return Collision? [#6082]
This unique clast evidently formed at 3GPa static pressure, and its survival points to two giant impacts a few hundred years apart. We suggest the two impacts may be two stages in a ‘hit-and-run return’ collision.

1:45 p.m.

Davidson J. *  Schrader D. L.

The Importance of Clastic Material in CR Chondrites [#6129]
We discuss the significance of clastic material in the CR chondrites, including a new clast in the CR2 Miller Range 11231, which further our understanding of the pre-accretion and alteration histories of the CR chondrite parent body.

2:00 p.m.

Herbst W. *  Greenwood J. P.

Tidal Disruption and Accretion During the Chondrule-Formation Epoch [#6344]
We place chondrule formation in the broader context of planet formation, adopting the Al-Mg chronology and a description of planetesimal evolution by Weidenschilling. The splash and flyby models are favored. Accretion by tidal disruption is likely.

2:15 p.m.

Wölfer E. *  Burkhardt C.  Renggli C. J.  Pangritz P.  Kleine T.

Constraining Volatile Element Loss Processes by Germanium Isotopic Investigations of Iron Meteorites [#6437]
We measured the Ge stable isotopic composition of 16 iron meteorites from different chemical groups to better constrain volatile element processes in planetary building blocks.

2:30 p.m.

Pape J. *  Zhang B.  Spitzer F.  Rubin A. E.  Kleine T.

Tungsten and Molybdenum Isotopic Constraints on the Origin and Chronology of IIIF Iron Meteorites [#6478]
We present new W, Mo and Pt isotope data for most meteorites that are currently classified as IIIF irons as well as for the pyroxene-rich pallasite Zinder to better constrain their genetic heritage and chronology.

2:45 p.m.

Stephan T. *  Bloom H. E.  Hoppe P.  Davis A. M.  Korsmeyer J. M.  Regula A.  Heck P. R.  Amari S.

Molybdenum, Ruthenium, and Barium in Presolar Silicon Carbide and Graphite—s-, r-, and p-Processes and the Role of Contamination [#6106]
Mo, Ru, and Ba isotopes in presolar SiC and graphite show s-process signatures. Mo and Ru isotopes are strongly correlated confirming their simultaneous production in AGB stars, which had fixed initial ratios of p- and r-process Mo and Ru isotopes.

3:00 p.m.

Hunt A. C. *  Theis K. J.  Rehkämper M.  Benedix G. K.  Andreasen R.  Schönbächler M.

The Dissipation of the Solar Nebula Constrained by Impacts and Core Cooling in Planetesimals [#6263]
Metallographic cooling rates imply asteroid cores suffered impacts. The Pd-Ag system dates core cooling and impacts. Pd-Ag ages for iron meteorites suggest impacts ~7.8-11.7 Myr after CAI. This may date gas dissipation or a giant planet instability.

3:15 p.m.

Greenwood R. C. *  Franchi I. A.  Findlay R.  Malley J. A.  Ito M.  Yamaguchi A.  Kimura M.  Tomioka N.  Uesugi M.  Imae N.  Shirai N.  Ohigashi T.  Liu M-C.  Uesugi K.  Nakato A.  Yogata K.  Yuzawa H.  Kodama Y.  Tsuchiyama A.  Yasutake M.  Hirahara K.  Takeuchi A.  Sakurai I.  Okada I.  Karouji Y.  Yada T.  Abe M.  Usui T.  Watanabe S.  Tsuda Y.  McCain K. A.  Matsuda N.  McKeegan K. D.  Nakazawa S.  Okada T.  Saiki T.  Tanaka S.  Terui F.  Yoshikawa M.  Miyazaki A.  Nishimura N.  Sekimoto S.

The O-Isotope Composition of Ryugu Particles: The Most Pristine CIs? [#6188]
Particles collected from asteroid Ryugu by the Hayabusa2 spacecraft have O-isotope compositions very close to those of CI chondrites (Orgueil). Minor differences in Δ17O reflect terrestrial contamination of CI meteorites.

3:30 p.m.

 

Break

3:35 p.m.

Krot A. N. *  Nagashima K.  Ivanova M. A.  Humayun M.  Libourel G.  Johnson B. C.  Cashion M. D.  Bizzarro M.

Oxygen Isotopic Compositions of Minerals in Chondritic and Achondritic Lithologies of the CB Carbonaceous Chondrite Sierra Gorda 013 [#6100]
We report on the mineralogy, petrography, and O-isotopes of individual minerals in the chondritic and achondritic lithologies of Sierra Gorda 013 (CBa) chondrite. Olivine, low-Ca pyroxene, and Cr-spinel in both lithologies have Δ17O of ~ -2.5±0.5‰.

3:50 p.m.

Goodrich C. A. *  Collinet M.  Jercinovic M. J.  Prissel T.  Agee C.  Spilde M.  Ziegler K.  Piatek J.

Tin-Essako 001: A Metal-Rich Ureilite? [#6141]
Tin-Essako 001 may be the first known metal-rich (40-60%) ureilite. We evaluate mineralogic, textural, and oxygen isotopic affinities to ureilites, and consider possible origins.

4:05 p.m.

Burbine T. H. *  Buchanan P. C.  Jercinovic M. J.  Greenwood R. C.

The Missing Diogenitic Asteroids: What Can Vestoids Tell Us About Vesta? [#6157]
Diogenitic Vestoids appear extremely rare whereas eucritic and howarditic Vestoids appear much more common. One possibility for this discrepancy is that diogenitic intrusions are extremely “thin” but widespread in Vesta’s eucritic crust.

4:20 p.m.

Rubin A. E. *  Turrin B. D.

Nature and Timing of a Pervasive Reduction Event on L-Chondrite Parent Body [#6063]
At least 17% of L6 chondrites exhibit prominent reduction features likely caused by oxidation of graphite during metamorphism. Ar/Ar ages were determined for six reduced L6s; the precise plateau age of one L6 shows this may have occurred 4543 Ma ago.

4:35 p.m.

Fagan T. J. *  Komatsu M.  Noguchi K.  Toshima S.

Equilibration in Silicate (Pyroxene) vs Sulfide (Troilite) During Metamorphism of Enstatite Chondrites [#6253]
During metamorphism of enstatite chondrites, pyroxene compositions become more homogeneous (i.e. equillibrate). Do Ti- and Cr-concentrations in troilite also homogenize/equilibrate?

4:50 p.m.

Jones R. H. *  Pankhurst M. J.  Oddershede J.  Barbee O.  Morgan D.  Thorley D.  DLS i13 Beamline Team

Non-Destructive Measurement of Crystallographically Oriented Fe-Mg Zoning Profiles in Chondrule Olivine via X-Ray Computed Tomography Combined with Diffraction Contrast Tomography (XCT/DCT) [#6117]
Combined X-ray microcomputed tomography and diffraction contrast tomography allows us to extract and interpret quantitative, crystallographically oriented Fe-Mg zoning profiles from olivine grains in CM-an chondrite NWA 11346.

 

Monday, August 15, 2022

IMPACTS I: IMPACT GLASS AND SHOCK DEFORMATION FEATURES

1:30 p.m.   Boisdale

An eight-talk mini-session. All impact sessions at this conference are dedicated to the memory of Jay Melosh.

Chairs:  Annemarie Pickersgill and Steven Goderis

Times

Authors (*Presenter)

Abstract Title and Summary

1:30 p.m.

Hamann C. *  Artemieva N.  Wirth R.  Roddatis V.  Kearsley A.

Condensation of Iron-Nickel Silicides and Silicon Monoxide from Impact Vapor Plumes: A Case Study on the Wabar Impact Glasses [#6334]
We report on iron-nickel silicides and silicon-rich rims around target clasts disseminated in the black Wabar impact glasses and discuss their formation from an impact vapor plume, from the results of a combination of petrographic investigation and numerical modeling.

1:45 p.m.

Xie T. *  Shieh S. R.  Osinski G. R.  Prakapenka V. B.  Chariton S.

Is Diaplectic Glass A Glass? [#6487]
Here we report a new phase diagram of intermediate plagioclase constructed from high-pressure high-temperature static experimental results, with phase boundaries drawn for the formation of diaplectic glass.

2:00 p.m.

Riches L. J. *  Pickersgill A. E.  Daly L.

Shock Deformation in Feldspar: Partial Amorphisation in Feldspar Twins [#6093]
Investigating partial amorphisation in alternating twins within feldspar minerals from the Chicxulub impact structure.

2:15 p.m.

Poelchau M. H. *

A Closer Look at Feather Features in Quartz as Differential Stress Indicators in the Shock Wave [#6496]
Feather features are proposed to be shear-derived shock features. However, their nature remains disputed. New studies on samples from Gosses Bluff confirm their shear-based formation and usefulness as indicators of differential stresses.

2:30 p.m.

Alwmark S. *  Alwmark C.  Ferrière L.  Martell J.  Rae A. S. P.  Zachén G.

Impact Crater Formation: Insights from >6,500 Meters of Shock Attenuation in the Central Uplift of the Siljan Impact Structure, Sweden [#6237]
Preliminary data of shock attenuation based on planar deformation features in quartz from the >6,500 m deep Stenberg-1 drill hole located in the center of the Siljan impact structure in Sweden shows a smooth decline in recorded shock pressures.

2:45 p.m.

Folco L. *  Campanale F.  Mugnaioli E.  Gemmi M.

Formation of Impact Coesite [#6251]
Our recent FESEM-TEM study, performed on impact ejecta from Kamil crater in Egypt and the Australasian tektite strewn field, confirms that the impact coesite forms through direct quartz-coesite transformation as first proposed in the 1970s.

3:00 p.m.

Feignon J.-G. *  Schulz T.  Ferrière L.  Goderis S.  de Graaff S. J.  Kaskes P.  Déhais T.  Claeys P.  Koeberl C.

Lack of Ubiquitous Impactor Component in the Chicxulub Peak Ring Impact Melt Rocks: Implications for the Fate of the Projectile [#6200]
Highly siderophile element and Re-Os isotopic investigations of Chicxulub peak ring impact melt rocks have revealed a low contribution from the impactor. This brings insights on the fate of the projectile and the processes occurring in the peak ring.

3:15 p.m.

Wittmann A. *

Monazite, Crichtonite, and Aeschynite in the Chicxulub Impact Crater Peak Ring [#6108]
Exotic, REE-rich accessory minerals in uplifted Chicxulub crater granitic basement rocks indicate localized high-temperature alteration preceding the impact.

3:30 p.m.

 

Break

 

Monday, August 15, 2022

IMPACTS II: CONFIRMING AND DATING TERRESTRIAL IMPACT STRUCTURES

3:35 p.m.   Boisdale

An eight-talk mini-session. All impact sessions at this conference are dedicated to the memory of Jay Melosh.

Chairs:  Ania Losiak and Michael Poelchau

Times

Authors (*Presenter)

Abstract Title and Summary

3:35 p.m.

Losiak A. *

Problematic Very Small Impact Craters [#6272]
Studies, including field work in very small impact craters, especially those developed in unconsolidated materials should be designed specifically for those features by understanding both the impact cratering process and Quaternary geology techniques.

3:50 p.m.

Cavosie A. J. *  Bishop J.  Timms N. E.  Reimold W. U.  Schmitt R.-T.

Experimental Constraints on Progressive Shock Deformation of Zircon in Porous Target Rocks Shocked to Pressures Between 2.5 and 17.5 GPa [#6113]
We present a shock stage classification system for progressive deformation of both zircon and quartz in dry porous sandstone (25-30 % porosity) shocked between 0 and 17.5 GPa.

4:05 p.m.

Stadermann A. C. *  Barnes J. J.  Erickson T. M.  Michels Z. D.

Electron Backscatter Diffraction Investigation of Zirconium-Bearing Phases in Suevite from Ries Crater, Germany [#6503]
We present a detailed coordinated study of zircon, reidite, and baddeleyite in polymict impact melt-bearing breccias from Ries Crater. Our study includes geochemical, petrologic, and mineralogic characterization of these samples.

4:20 p.m.

Cousins V. K. *  Cavosie A. J.  Quintero R. R.  Timms N. E.

Microstructural Study of Zircon in Red Impact Melt Rock from Gosses Bluff, Australia [#6271]
Gosses Bluff hasn’t been studied in detail since the 1990’s, and no accessory mineral microstructural work was previously done. This study reveals an abundance of different zircon microstructures, including FRIGN and (F)RIGN zircon.

4:35 p.m.

Quintero R. R. *  Cavosie A. J.  Evans N. J.  McDonald B.  Alwmark S.  Roberts M.  Meyers J.

Discovery of Shocked Quartz and Impact Melt Glass from the Ora Banda Impact Structure, Western Australia [#6256]
The Ora Banda structure is a recently discovered impact in Western Australia. Shatter cones were previously documented. We report further impact evidence including PDFs in quartz, and detection of an extraterrestrial signature in melt glass.

4:50 p.m.

Kenny G. G. *  Hyde W. R.  Storey M.  Garde A. A.  Whitehouse M. J.  Beck P.  Johansson L.  Søndergaard A. S.  Bjørk A. A.  MacGregor J. A.  Khan S. A.  Mouginot J.  Johnson B. C.  Silber E. A.  Wielandt D. K. P.  Kjær K. H.  Larsen N. K.

40Ar/39Ar and Zircon U–Pb Analyses Date the Hiawatha Impact Structure, Northwest Greenland, to the Late Paleocene [#6056]
We show that the Hiawatha impact structure, recently proposed as having formed after the initiation of the Greenland Ice Sheet ca. 2.6 million years ago, is actually ca. 58 million years old.

5:05 p.m.

Buchner E. *  Schmieder M.  Sach V. J.

Nördlinger Ries and Steinheim Basin — Another Divorced Impact Crater Couple? [#6042]
Bio-litho-stratigraphic constraints on two separated seismite horizons lead us to conclude that the Ries and Steinheim craters were produced by two impact events ~40 km and ~0.5 to 0.8 Myr apart, and both impacts likely triggered major earthquakes.

5:20 p.m.

Ferrière L. *  Feignon J.-G.  Baratoux D.  Koeberl C.

Prison Break and the Tentative Exploration of the Bateke Plateau Structure, a Possible Meteorite Impact Crater Located in Either Gabon or Congo [#6154]
A report on our February 2020 expedition to the 7-km-diameter Bateke Plateau structure, a possible impact structure located in eastern Gabon, a few kilometers west of the border with the Congo, an epic journey with prison stopover(s).

 

Monday, August 15, 2022

BARRINGER LECTURE

6:00 p.m.   Lomond Auditorium

Chairs:  Lydia Hallis and Brigitte Zanda

 

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Tuesday, August 16, 2022

MOON

8:45 a.m.   Boisdale

This is a session to present new results on lunar science, and includes a dedication to Klaus Keil

Chairs:  Katie Joy and Paul Warren

Times

Authors (*Presenter)

Abstract Title and Summary

8:45 a.m.

Haber T. *  Iqbal W.  Liu T.  Scherer E. E.  van der Bogert C. H.  Hiesinger H.

A 4.15 Ga Age of Serenitatis or Crisium implied by the 207Pb/206Pb Systematics of Apollo Sample 77017 [#6165]
We obtained isotopic data (207Pb/206Pb and 147Sm-143Nd) that indicate a 4147 ± 8 Ma age for the recrystallization of Apollo 17 sample 77017 as a result of a basin forming impact event (most likely Serenitatis or Crisium) into a KREEP-free protolith.

9:00 a.m.

Joy K. H. *  Wang N.  Tartèse R.  Pernet-Fisher J. F.  Liu L.  Lin Y. T.  Darling J. R.  Tar P.  Irving A. J.

Is the Age of the Moon’s South Pole Aitken Basin Preserved in Lunar Meteorite Northwest Africa 2995? [#6374]
Lunar meteorite NWA 2995 is a fragmental breccia. Zircon and apatite in the meteorite have dates of ~4.32-4.33 Ga. The meteorite is compositionally akin to the South Pole Aitken basin and we propose that this could support that the SPA was formed at ~4.32 Ga.

9:15 a.m.

Sheikh D. *  Ruzicka A. M.  Hutson M. L.  Stream M.

Dunite Clast in Lunar Meteorite Northwest Africa (NWA) 14900: Mantle Derived? [#6077]
A Dunite clast in lunar meteorite Northwest Africa (NWA) 14900 displays evidence for representing either 1) a fragment of the lunar mantle (early LMO cumulate or Mg-suite partial melt residue), 2) the most primitive Mg-suite dunite sampled thus far.

9:30 a.m.

Render J. *  Wimpenny J.  Borg L.

Gallium Isotope Heterogeneity in Lunar Highland Rocks [#6502]
The Moon is highly depleted in volatile elements, but there is debate on how and when this occurred. Gallium isotopes in lunar highland rocks hold critical clues to the nature of this devolatilization.

9:45 a.m.

Abouchami W. *  Wombacher F.  Galer S. J. G.

A High-Precision Cadmium Stable Isotope Study of Apollo Lunar Soils [#6146]
We present Cd isotope data on Apollo 12 mare soils and Apollo 16 highland soils to investigate the history of the lunar regolith, the origin of Moon volatile depletion and thermal neutron capture effects due to exposure to galactic cosmic rays.

10:00 a.m.

McCubbin F. M. *  Shearer C. K.  Zeigler R. A.  Gross J.  Krysher C.  Parai R.  Pravdivtseva O.  Meshik A.  McDonald F.  Sharp Z. D.  Eckley S.  Hanna R. D.  Ketcham R. A.  Mitchell J.  Welten K. C.  Barnes J. J.  Dyar M. D.  Burgess K.  Curran N. M.  Elsila J. E.  Gillis-Davis J.  Sehlke A.  Cohen B. A.  ANGSA Science Team

Overview of Progress for the Apollo Next Generation Sample Analysis (ANGSA) [#6432]
This abstract provides an update to the activities for the Apollo Next Generation Sample Analysis program.

10:15 a.m.

Gross J. *  Mosie A.  Krysher C.  Eckley S. A.  Zeigler R. A.  McCubbin F. M.  Shearer C.  ANGSA Science Team

From Apollo to Artemis: how Processing ANGSA Core Samples 73001/2 Can Help to Prepare for Future Sample Return Missions to the Moon and Beyond [#6310]
Many new curation and scientific tools (XCT, multi-spectral imaging, gas extraction) have been applied to create a 73001/2 PE catalog that benefits curation strategy, PE efforts, sample allocation and help prepare for future sample return missions.

10:30 a.m.

Warren P. H. *

In Memoriam Klaus Keil — An Appreciation

10:40 a.m.

Warren P. H. *

Ferroan Anorthosite: A Widespread and Distinctive, High-Olivine/Pyroxene, Lunar Rock Type [#6047]
A distinctive aspect of ferroan anorthosite, including 4 new lunar meteorites, is the rock type’s moderate-high olivine/pyroxene ratio. Comparably ferroan (low Mg/Fe) Mg-suite cumulates have no olivine. High ol/px may be a sign of magma ocean origin.

10:55 a.m.

Wilbur Z. E. *  Barnes J. J.  Eckley S. A.  Zeigler R. A.

Volcanic Histories of Lunar Basalts Revealed Via 3D Visualization [#6400]
We investigate Apollo 15 and 17 basalts through 2D and 3D XCT analyses of textures, modal mineralogy, and vesiculation. This work aims to understand the potential differences in eruptive characteristics between low-Ti and high-Ti lunar basalts.

11:10 a.m.

White L. F. *  Anand M.  Perea D.  Černok A.  Wirth M.

Using Atom Probe Tomography to Unravel the Age and Volatile Composition of Lunar Samples [#6355]
Atom probe tomography allows measurement of elements and isotopes from nanometre scale mineralogical domains. Here, we summarise the application of APT to constraining the age and volatile composition of lunar materials.

11:25 a.m.

Wadhwa M. *  Sutton S. R.  Lanzirotti A.  Distel A. G.  Davidson J.

Iron and Chromium Valences of Pyroxenes in the Lunar Basaltic Meteorite Elephant Moraine 96008: Implications for Redox Conditions and Magmatic Processes on the Moon [#6501]
This study reports Fe and Cr valences of pyroxenes in lunar basaltic meteorite EET 96008 determined via the micro-XANES technique. We find inter- and intragrain variations that may have implications for lunar magmatic processes and redox conditions.

11:40 a.m.

Che X. C. *  Snape J. F.  Tartèse R.  Joy K. H.  Shi Y. R.  Xie S. W.  Long T.  Nemchin A. A.  Norman M. D.  Neal C. R.  Head J.  Jolliff B.  Whitehouse M. J.  Bao Z.  Liu D. Y.

Lithological Diversity in Chang’e-5 Soil Sample CE5C0400 [#6245]
This study presents the results of petrological and geochemical investigations of basaltic and breccia clasts, agglutinates, and glass beads from Lunar soil CE5C0400, in order to address the relationship between the soil sample and the EM4 unit.

11:55 p.m.

Otsuki Y. *  Bajo K.  Wieler R.  Yurimoto H.

Coronal Mass Ejection Atoms Recorded in Ilmenite Grain from Lunar Soil 71501 [#6196]
We performed noble gas depth profiling for lunar soil 71501 ilmenite. The depth profile of He-4 and Ne-20 had a tail at a depth deeper than 100 nm. This tail would indicate high energy solar wind implantation at ~0.1 Gy ago.

12:10 p.m.

McFadden J. A. *  Thompson M. S.  Keller L. P.  Christoffersen R.  Morris R. V.  Shearer C.  ANGSA Science Team

Surface Exposure Timescales of Apollo Core Sample 73002 Space Weathered Grains [#6418]
Structural features associated with space weathering were used to determine surface exposure ages of grains in the top 4 cm of Apollo core sample 73002. Results indicate the presence of an active reworking zone.

12:25 p.m.

Nottingham M. C. *  Curran N. M.  Pernet-Fisher J. F.  Burgess R.  Gilmour J. D.  Crawford I. A.  Joy K. H.

The Origin of the Apollo 16 ‘Soil-Like’ Breccias: Clues Revealed by Noble Gases [#6227]
Apollo 16 regolith breccias are classified as either ‘young’, ‘ancient’, or ‘soil-like’. We present noble gas data for the ‘soil-like’ breccias and discuss the implications our data have on our understanding of the formation of these regolith breccias.

 

Tuesday, August 16, 2022

CARBONACEOUS CHONDRITES I

9:00 a.m.   Alsh

A session for CVs, CKs, and CRs

Chairs:  Tasha Dunn and Pierre-Marie Zanetta

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Ma C. *

Discovery of a New Chalcogenide Mineral, Ni9Ge2S2, in Allende: An Alteration Phase from the Early Solar System [#6173]
New chalcogenide mineral Ni9Ge2S2 is the most Ge-rich phase identified in a meteorite, adding a new puzzle piece to the picture of secondary processes in the early solar system.

9:15 a.m.

Johnson J. M. *  Brearley A. J.

Variable Garnet Compositions in the Allende CV3 Chondrite: Further Evidence for Complex Alteration on the CV3 Parent Body [#6383]
Grossular and andraditic garnets in Allende matrix, fine-grained rims around CAIs, and within CAIs indicate complex fluid-rock interactions during alteration on the CV3 parent body.

9:30 a.m.

Pravdivtseva O. V. *  Meshik A. P.  Dunn T. L.

I-Xe Record of Aqueous Alteration in CK Magnetites [#6380]
Xe isotopic composition was analyzed in 8 magnetites separated from CK chondrites of different metamorphic grades.Four samples yielded high-precision I-Xe ages.

9:45 a.m.

Dunn T. L. *  Gross J.

Northwest Africa (NWA) 11607: A CK Chondrite Metamorphic Breccia (CK3-6) [#6457]
CK breccias / Are CVs hiding within? / Keep looking, we will.

10:00 a.m.

Wada S. *  Bajo K.  Yurimoto H.

Visualization of Sedimentary Structure in Chondrite by 2-D Helium Imaging [#6461]
We visualized a solar wind He distribution in the matrix from Northwest Africa 801 CR chondrite by 2-D He imaging. The He distribution texture in the NWA 801 matrix would result from gardening sedimentation.

10:15 a.m.

Obase T. *  Nakashima D.  Choi J.  Enokido Y.  Matsumoto M.  Nakamura T.

Q-like Ne Hosted by Water-Susceptible Phase in Primitive CR Chondrite: A Possible Link to Cometary Materials [#6070]
The Q-like Ne-rich noble gas component hosted by a water-susceptible phase in MIL 090657 (CR2) is similar to the Q-like Ne in an IDP of likely cometary origin, suggesting that comets and the CR chondrite share similar Q-like Ne-rich materials.

10:30 a.m.

 

Break

 

Tuesday, August 16, 2022

ORGANICS AND ICES

10:40 a.m.   Alsh

Chairs:  Christian Vollmer and Yoko Ochiai

Times

Authors (*Presenter)

Abstract Title and Summary

10:40 a.m.

Ochiai Y. *  Ida S.  Shoji D.

Monte Carlo Simulation of Amino Acid Synthesis driven by UV irradiation in Protoplanetary Disks and Primitive Earth Atmosphere [#6505]
We explore the amino acid synthesis driven by UV irradiation that could have taken place in protoplanetary disks and primitive Earth atmosphere by performing Monte Carlo simulation that applies the graph-theoretic matrix model for chemical reactions.

10:55 a.m.

Lecasble M. *  Remusat L.  Bernard S.

Hydrogen Isotope Exchange of Polycyclic Aromatic Hydrocarbons Under Hydrothermal Conditions: Implications for Carbonaceous Chondrites [#6195]
The hydrogen isotope signature of PAHs in CCs has recently been found deuterium depleted. Here we constrain the kinetics of hydrogen exchange between PAHs and water in order to retrieve the duration of alteration episodes and the original PAH values.

11:10 a.m.

Holt M. C. *  Hilts R. W.  Herd C. D. K.

The Search for Organosulfur Compounds in the Tagish Lake Carbonaceous Chondrite [#6474]
Establishment and testing of new methods for the extraction of organosulfur compounds from the C2 ungrouped carbonaceous chondrite Tagish Lake our outlined.

11:25 a.m.

Isa J. *  Orthous-Daunay F.-R.  Vuitton V.  Flandinet L.  Zandanel A.  Truche L.  Hellmann R.

Secondary SOM Produced Through Aqueous Alteration on Carbonaceous Chondrite Parent Bodies: Anomalies from Mass Distributions [#6473]
We discuss secondary SOM produced through aqueous alteration on carbonaceous chondrite parent bodies by comparing to the expected primordial mass distribution of chondritic organic matter.

11:40 a.m.

Arribard Y. *  Noun M.  Della-Negra S.  Doisneau B.  Daubisse F.  Jacquet D.  Ribaud I.  Brunetto R.  Baklouti D.

TOF-SIMS Characterization of Organic Matter in the Mineral Context of Aqueous Alteration of CM Chondrites [#6211]
Localization of the organic matter of CM chondrites according to the mineral context and characterization of its structure in function of the level of aqueous alteration thanks to TOF-SIMS 2D imaging of freshly cut slices.

11:55 a.m.

Grady M. M. *  Morgan G.  Perkins M.  Nicoara S.  Verchovsky A.  Abernethy F.  Findlay R.  Greenwood R. C.  Franchi I. A.  Anand M.  King A. J.

Low Temperature Carbonaceous Components in the Winchcombe Meteorite [#6426]
Carbon in Winchcombe/Many organic molecules/with nitrogen too.

12:10 p.m.

Vollmer C. *  Leitner J.  Bays C.  King A. J.  Schofield P. F.  Araki T.  Mosberg A. B.  Kepaptsoglou D.  Ramasse Q. M.  Hoppe P.

Isotopic Composition, Morphologies, and Functional Chemistry of Organic Matter within the Recent Observed Falls Tarda and Winchcombe [#6296]
We have investigated organic matter within two recent observed falls, Tarda and Winchcombe, by a combination of high-spatial resolution analysis techniques (NanoSIMS - TEM - STXM) to gain insight into formation processes of organic matter.

 

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Tuesday, August 16, 2022

SPECIAL SESSION: SAMPLES AND OBSERVATIONS OF RYUGU, BENNU, AND PSYCHE I

2:00 p.m.   Alsh

This session covers science from returned sample analysis and spacecraft observation of solar system small bodies.

Chairs:  Sarah Crowther and Shogo Tachibana

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Nakamura T. *  Matsumoto M.  Amano K.  Enokido Y.  Zolensky M.  Mikouchi T.  Genda H.  Tanaka S.  Zolotov M. Y.  Kurosawa K.  Wakita S.  Hodo R.  Nagano H.  Nakashima D.  Takahashi Y.  Fujioka Y.  Kikuiri M.  Kagawa E.  Matsuoka M.  Brearley A. J.  Tsuchiyama A.  Uesugi M.  Matsuno J.  Kimura Y.  Sato M.  Milliken R. E.  Tatsumi E.  Sugita S.  Hiroi T.  Kitazato K.  Brownlee D.  Joswiak D. J.  Takahashi M.  Ninomiya K.  Takahashi T.  Osawa T.  Terada K.  Brenker F. E.  Tkalcec B. J.  Vincze L.  Brunetto R.  Aléon-Toppani A.  Chan Q.  Roskosz M.  Viennet J.-C.  Beck P.  Alp E.  Michikami T.  Nagaashi Y.  Tuji T.  Ino Y.  Martinez J.  Han J.  Dolocan A.  Bodnar R. J.  Tanaka M.  Yoshida H.  Sugiyama K.  King A. J.  Fukushi K.  Suga H.  Yamashita S.  Kawai T.  Inoue K.  Nakato A.  Noguchi T.  Vilas F.  Hendrix A. R.  Jaramillo C.  Domingue D. L.  Dominguez G.  Gainsforth Z.  Engrand C.  Duprat J.  Russell S. S.  Banato E.  Ma C.  Kawamoto T.  Yurimoto H.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis Stone Team

Analysis of “Stone” Samples from C-Type Asteroid Ryugu [#6190]
We analyzed eighteen Ryugu “stone” samples of 1 ~ 8 mm in size and found that mineralogical and physical properties of Ryugu samples reveal incipient to advanced aqueous alteration in its parent asteroid.

2:15 p.m.

Tsuchiyama A. *  Matsumoto M.  Matsuno J.  Nakamura T.  Noguchi T.  Yasutake M.  Uesugi K.  Takeuchi A.  Miyake M.  Okumura S.  Enju S.  Mitsukawa I.  Fujioka Y.  Sun M.  Takigawa A.  Enokido Y.  Kawamoto T.  Morita T.  Kikuiri M.  Amano K.  Kagawa E.  Matsumoto T.  Nakano N.  Rubino S.  Nakano T.  Yurimoto H.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis Stone Team  Hayabusa2-Initial-Analysis Sand Team

3D Morphologies of Magnetite, Sulfides, Carbonates and Phosphates in Ryugu Samples and Their Crystallization Sequence during Aqueous Alteration [#6221]
3D morphologies of minerals in Ryugu samples were examined by nanotomography. Their crystallization sequence can be explained by dissolution and precipitation in aqueous alteration of primitive solar materials such as GEMS-like materials.

2:30 p.m.

Mikouchi T. *  Yoshida H.  Nakamura T.  Zolensky M. E.  Nakashima D.  Hagiya K.  Kikuiri M.  Morita T.  Amano K.  Kagawa E.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Olivine Mineralogy of Asteroid Ryugu Samples and CI Chondrites: Further Evidence for Their Common Origin [#6180]
We analyzed olivine grains (mostly smaller than 5 micrometers in size) in asteroid Ryugu samples and CI chondrites by FE-EPMA. We found that all samples show nearly identical major and minor element compositions, suggesting a common origin.

2:45 p.m.

Dionnet Z. *  Aléon-Toppani A.  Brunetto R.  Rubino S.  Nakamura T.  Baklouti D.  Djouadi Z.  Lantz C.  Mivumbi O.  Borondics F.  Héripré E.  Troadec D.  Tsuchiyama A.  Matsuno J.  Matsumoto M.  Morita T.  Kikuiri M.  Amano K.  Kagawa E.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Acqueous Alteration Probed by Multi-Assembly and 3D Heterogeneity in Small Ryugu Fragments [#6078]
This study will present the results of muti-analytical sequence (IR-CT, spectroscopy FTIR, and SEM-EDX) applied to nine micrometric Ryugu fragments in order to analyze to what extent Ryugu was affected by aqueous alteration.

3:00 p.m.

Piani L. *  Marrocchi Y.  Nagashima K.  Kawasaki N.  Sakamoto N.  Bajo K.  Yurimoto H.  Hayabusa2-Initial-Analysis Chemistry  Hayabusa2-Initial-Analysis Core

Hydrogen Isotopic Composition of Water in Ryugu Samples Returned by the Hayabusa2 Mission [#6058]
In situ analyses by SIMS were used to estimate the D/H ratio of water in Ryugu’s A and C fragments. Ryugu’s water D/H is similar to CI chondrite water, but Ryugu’s rocks appear to be depleted in H compared to CIs.

3:15 p.m.

McCain K. A. *  Matsuda N.  Liu M.-C.  McKeegan K. D.  Yamaguchi A.  Kimura M.  Tomioka N.  Ito M.  Imae N.  Uesugi M.  Shirai N.  Ohigashi T.  Greenwood R. C.  Uesugi K.  Nakato A.  Yogata K.  Yuzawa H.  Kodama Y.  Hirahara K.  Sakurai I.  Okada I.  Karouji Y.  Nakazawa S.  Okada T.  Saiki T.  Tanaka S.  Terui F.  Yoshikawa M.  Miyazaki A.  Nishimura M.  Yada T.  Abe M.  Usui T.  Watanabe S.  Tsuda Y.

Early Fluid Activity on the Ryugu Parent Asteroid Inferred from 53Mn-53Cr Ages of Ryugu Carbonate [#6462]
We measured the 53Mn-53Cr ages of carbonate minerals found in Ryugu particles and found that carbonate formation occurred within the first 1.4 Myr after CAI formation.

3:30 p.m.

Spitzer F. *  Burkhardt C.  Kleine T.  Hayabusa2-Initial-Analysis Chemistry Team  Hayabusa2-Initial-Analysis Core

Nickel Isotopic Composition of Ryugu Samples Returned by the Hayabusa2 Mission [#6317]
We investigate the Ni isotopic composition of Ryugu samples in order to better assess their genetic link to CI chondrites.

3:45 p.m.

Barosch J. *  De Gregorio B.  Stroud R. M.  Nittler L. R.  Yurimoto H.  Yabuta H.  Nakamura T.  Noguchi T.  Okazaki R.  Naraoka H.  Sakamoto K.  Watanabe S.  Tsuda Y.  Tachibana S.  Hayabusa2-Initial-Analysis Team

Presolar Oxide and Carbonaceous Grains in Asteroid Ryugu and Ivuna [#6061]
We used the NanoSIMS to identify presolar grains in Ryugu samples and Ivuna.

4:00 p.m.

Nguyen A. N. *  Mane P.  Piani L.  Hayabusa2-Initial-Analysis Chemistry  Hayabusa2-Initial-Analysis Core

Presolar C- and O-Rich Grains in the Matrix and a Clast in Asteroid Ryugu [#6376]
We found high abundances of presolar O-rich and C-rich grains in a clast, including two probable presolar silicates. The matrix had a lower abundance of presolar C-rich grains, similar to chondrites, and no presolar O-rich grains.

4:15 p.m.

Yabuta H. *  Cody G. D.  Engrand C.  Kebukawa Y.  De Gregorio B.  Bonal L.  Remusat L.  Stroud R.  Quirico E.  Nittler L. R.  Hashiguchi M.  Komatsu M.  Dartois E.  Mathurin J.  Duprat J.  Okumura T.  Takahashi Y.  Takeichi Y.  Kilcoyne D.  Yamashita S.  Dazzi A.  Deniset-Besseau A.  Sandford S.  Martins Z.  Tamenori Y.  Ohigashi T.  Suga H.  Wakabayashi D.  Verdier-Paoletti M.  Mostefaoui S.  Montagnac G.  Barosch J.  Kamide K.  Shigenaka M.  Bejach L.  Vitale S.  Aoki D.  Fukushima K.  Sugita S.  Yumoto K.  Sugimoto N.  Noguchi T.  Yurimoto H.  Nakamura T.  Okazaki R.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

An Updated Overview of Macromolecular Organic Matter in the C-Type Asteroid Ryugu Samples [#6514]
To uncover the significance of organic matter on C-type asteroid, the Hayabusa2 Initial Analysis Organic Macromolecule sub-team unveiled the chemical, isotopic, and morphological compositions of macromolecular organic matter from the Ryugu samples.

4:30 p.m.

Remusat L. *  Verdier-Paoletti M.  Mostefaoui S.  Yabuta H.  Engrand C.  Hayabusa2-Initial-Analysis IOM Team  Yurimoto H.  Nakamura T.  Noguchi T.  Okazaki R.  Naraoka H.  Sakamoto K.  Watanabe S.  Tsuda Y.  Tachibana S.

Nanosims Investigation of H- and N-Isotope Distributions in the Insoluble Organic Matter of Ryugu Samples [#6197]
Ryugu IOM was investigated by NanoSIMS imaging. It exhibits similar elemental ratios and H- and N-isotope anomalies than IOM in hydrated CC. However, lower D/H signs different degree of aqueous alteration or impact of space weathering.

4:45 p.m.

Orthous-Daunay F.-R. *  Isa J.  Wolters C.  Vuitton V.  Beck P.  Bonal L.  Flandinet L.  Thissen R.  Moynier F.  Moran S.  He C.  Horst S.  Vinogradoff V.  Piani L.  Bekaert D. V.  Naraoka H.  Tachibana S.  Remusat L.  Hayabusa2-Initial-Analysis SOM Team  Hayabusa2-Initial-Analysis Core

Origin of the Soluble Organic Matter of Ryugu, and Carbonaceous Chondrites [#6488]
A polymerization pattern has been found in the soluble organic matter of Ryugu’s regolith and compared to other carbonaceous chondrites and analogues.

5:00 p.m.

Krietsch D. *  Busemann H.  Riebe M. E. I.  Maden C.  Yabuta H.  Naraoka H.  Okazaki R.  Yurimoto H.  Nakamura T.  Noguchi T.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis Volatile Team

Initial Noble Gas Results from Ryugu Insoluble Organic Matter (IOM) and Other Samples [#6274]
We will present first results of our noble gas study on Ryugu Insoluble Organic Matter (IOM) and other samples and compare these results with bulk Ryugu data and IOM extracted from aqueously altered type 1-2 carbonaceous chondrites.

5:15 p.m.

Crowther S. A. *  Lawton T. P.  Clay P. L.  Fawcett L.  Cowpe J.  Gilmour J. D.  Okazaki R.  Yurimoto H.  Nakamura T.  Noguchi T.  Naraoka H.  Yabuta H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis Volatile Team

High Resolution Step Pyrolysis Xenon Isotopic Analysis of Ryugu Material Returned by Hayabusa2 [#6281]
The Xe concentration in Ryugu material is higher than CI chondrites. The isotopic composition can be modelled as mixtures of Q-Xe and solar wind, with variable contributions from HL-Xe. There is no requirement for air, spallation or fission products.

 

Tuesday, August 16, 2022

MELTED METEORITES: IT’S ALL HOW YOU DIFFERENTIATE IT

2:00 p.m.   Boisdale

Chairs:  Julia Cartwright and Brendan Anzures

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Cartwright J. A. *  Kouvatsis I.  Whitehouse M. J.

Investigating Mantle Reservoirs on Vesta using Pb Systematics [#6449]
Ace lead isotopes / Yield unseen cumulate trend / Something exotic?

2:15 p.m.

Bell A. S. *  Shearer C. K.  Pinkham L. A.  Irving A. J.

A Novel Thermodynamic-Phase Equilibrium Approach for Calculating Magmatic fO2 Values of Fe-Rich Diabasic Angrites. Do We Need a New Model for Angrite Petrogenesis? [#6031]
This abstract presents a new approach to generating redox data for angrite magmas. New fO2 values from three angrites are used to critically evaluate the plausibility of the oxidized melting hypothesis. Our data suggest we need a new model.

2:30 p.m.

Pinkham L. A. *  Bell A. S.  Shearer C.

The Effects of fO2 on Mineral Compositions in Angrites: New Insights from Angrite Crystallization Experiments [#6469]
A suite of redox-controlled angrite crystallization experiments to investigate phase equilibria, mineral compositions, and valence partitioning behavior as functions of fO2.

2:45 p.m.

Rider-Stokes B. G. *  Greenwood R. C.  Anand M.  White L. F.  Franchi I. A.  Debaille V.  Goderis S.  Pittarello L.  Yamaguchi A.  Mikouchi T.  Claeys P.

Outward Displacement of Rocky Planetesimals in the Early Solar System: Oxygen Isotope Evidence from Angrites [#6101]
Here we present evidence for an oxygen isotopic disequilibrium between the matrix and olivine xenocrysts in three quenched angrites, NWA 12320, Asuka-12209 and Asuka-881371, discussing the possible causes of this variation.

3:00 p.m.

Riebe M. E. I. *  Plant A.  Meier M. M. M.  Will P.  Krämer A.-K.  Bischoff A.  Maden C.  Busemann H.

Almahata Sitta Ureilites -— Noble Gases and Cosmic Ray Exposure Ages [#6258]
Cosmic ray exposure ages of Almahata Sitta samples span a wide range, indicting pre-irradiation and a true transfer age ≤8 Ma. Trapped noble gases in Almahata Sitta ureilites are similar to trapped noble gases in other ureilites.

3:15 p.m.

Anguelova M. *  Fehr M. A.  Schönbächler M.

The Origin and Igneous Processing of the Ureilite Parent Body Contraint by Mass-Dependent and Nucleosynthetic Titanium Isotope Data [#6433]
Nucleosynthetic and mass-dependent Ti isotope data are presented for ten monomict ureilites. The samples encompass different petrographic types and cover nearly the full range of known olivine core compositions.

3:30 p.m.

Zhu K. *  Becker H.  Anand A.  Hofmann B.  Mezger K.

Reconstructing Asteroidal Core Formation Using Cr Stable Isotopes [#6312]
We use chromites to re-estimate the Cr stable isotope composition of iron meteorites, avoiding the cosmogenic effects. Iron meteorites can have isotopically lighter Cr than chondrites, suggesting planetary core formation fractionates Cr isotopes.

3:45 p.m.

Anzures B. A. *  McCubbin F. M.  Dygert N.  Barnes J. J.  Boyce J. W.

On the Origin and Evolution of Winonaite and IAB Iron Meteorite Parent Bodies: Application of Silicate Geospeedometry and Apatite Characterization [#6485]
Silicate irons / Variable temp(?), fast cool / Partial melt events.

4:00 p.m.

Danoix F. *  Danoix R.  Cuvilly F.  Gattacceca J.  Maurel C.  Devouard B.  Roskosz M.  Gounelle M.

Microscale to Nanoscale Analysis of Ni-Rich Iorn Meteorites [#6386]
In this presentation, we investigate the micro to nano structure of the metallic matrix of Ni enriched iron meteorites, as well as the associated compositional variations.

4:15 p.m.

Agee C. B. *  Ross A. J.  Spilde M. N.  Ziegler K.

Hassi el Biod 002: New Ungrouped Pallasite [#6428]
We report here on a recently classified ungrouped pallasite Hassi el Biod 002 (HeB 002) which is a unique type both in terms of olivine composition and oxygen isotopes.

4:30 p.m.

Vaci Z. *  Koefoed P.  Tian Z.  Wang K.  Day J. M. D.  Barrat J. A.  Agee C. B.

Potassium Isotopic Compositions of Evolved Achondrites [#6034]
The Potassium isotopic compositions of several ungrouped evolved achondrites provide proxies for early solar system processes such as accretion, differentiation, and impact.

4:45 p.m.

Ray S. *  Schrader D. L.  Rai V. K.  Wadhwa M.

Combined Iron and Silicon Isotope Compositions of Ungrouped Achondrites: Evaluating the Role of Degree of Differentiation and Redox Conditions [#6460]
This abstract evaluates the role of degree of differentiation and redox conditions of ungrouped achondrites in influencing their iron and silicon isotope compositions.

5:00 p.m.

Fang L. *  Frossard P.  Boyet M.  Bouvier A.  Barrat J.-A.  Chaussidon M.  Moynier F.

Half-Life and Initial Solar System Abundance of 146Sm Determined from the Oldest Andesitic Meteorite [#6465]
In this study, we apply the short-lived 26Al-26Mg, 146Sm-142Nd, and long-lived 147Sm-143Sm chronometers to the oldest known andesitic meteorite and volcanical rock, Erg Chech 002 (EC 002), to constrain the solar system initial abundance of 146Sm.

5:15 p.m.

Debaille V. *  Gattacceca J.  Roland J.  Braucher R.  Devouard B.  Leya I.  Jambon A.  Pourkhorsandi H.  Goderis S.

Northwest Africa 13188: A Meteorite from the Earth? [#6294]
NWA 13188 has been classified as an ungrouped achondrite. It presents a fusion crust and contains a moderate amount of 10Be, but displays a terrestrial chemical composition.

 

Tuesday, August 16, 2022

VIRTUAL POSTER SESSION I

5:30 p.m.   Boisdale

A two-hour online session for e-posters

 

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Tuesday, August 16, 2022

POSTER SESSION:  PRESOLAR GRAINS

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Liu N.  Alexander C. M. O’D.  Nittler L. R.

Intrinsic Nitrogen Isotope Ratios of Presolar Silicon Carbide Grains [#6384]
We report N isotope ratios for 42 presolar SiC grains of diverse groups. Compared to the literature data, the “cleaner” N isotope ratios of our grains are more representative of intrinsic stellar signatures and reveal several new trends and features.

Shaw K. M. M.  Coath C. D.  Elliott T.

Heterogeneity in Presolar Titanium Between Chondrites [#6060]
New in situ data of Ti in presolar O-rich grains from a range of unequilibrated meteorite classes may offer an insight into the distribution of material in the early protoplanetary disk.

 

Tuesday, August 16, 2022

POSTER SESSION:  ORGANICS AND ICES

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

He Y. Y.  Criouet I.  Viennet J.-C.  Lecasble M.  Boulesteix D.  Buch A.  Guillaumet M.  Laurent B.  Duverger A.  Bernard S.  Remusat L.

The Evolution of Nucleobases Under Asteroidal Aqueous Alteration [#6091]
Meteorite nucleobases are crucial for decoding the evolution of organic matter in the early solar system. Our study will explain why different abundances and distributions of nucleobases have been detected in numerous meteorites.

O’Brien A. C.  Hallis L. J.  Regnault C.  Morrison D.  Blackburn G.  McKay E.  Whitfield P.  Lee M. R.

Soluble Organics Within the Newly Fallen Winchcombe Meteorite [#6140]
Winchcombe Organics / Studied with LC-MS / Lots of Sulfonates.

Meinert C.  Bocková J.  Leyva V.  Topin J.  Meierhenrich U. J.  Jones N. C.  Hoffmann S. V.  d’Hendecourt L.

Why Nature Never Makes Chiral Twins — Insights from Cometary Ice Analogues and Extra-Terrestrial Sample Analyses [#6300]
What is responsible for the origin of homochirality, the exclusive use of one enantiomer over its mirror image in life’s biopolymers? Our data predict the handedness of stellar circular polarization assuming life’s asymmetry originated in space.

Abdu Y. A.

Infrared Spectroscopic Evidence of Benzonitrile in Carbonaceous-Chondrite Material from the Kapoeta Meteorite [#6311]
We report the finding of benzonitrile in carbonaceous-chondrite material from the Kapoeta achondrite by Micro-FTIR spectroscopy. The results will have astrophysical implications, as benzonitrile is ubiquitous in the interstellar medium.

Natrajan S.  Marhas K. K.

Spectroscopic Investigations of IOM: Insights into Aqueous Alteration on CM Parent Body [#6373]
Spectroscopic investigation of insoluble organic matter gives a plethora of information regarding their chemical structure and composition. This brings us a step closer to unveiling the state of organic matter and the associated parent body processes.

Almayrac M. G.  Broadley M. W.  Bekaert D. V.  Byrne D. J.  Piani L.  Marty B.

Nitrogen and Noble Gases in Cometary Ices Formed at 70K [#6422]
We have developed an experimental setup called EXCITING to study the behavior of volatile elements in cometary ice analogues. We find that the nitrogen and noble gas abundances of comet 67P/C-G can be reproduced by forming ice at 70K.

Changela H. G.

The Variety of Macromolecular Organic Material in Primitive Chondrites [#6481]
A summary is provided on the variety of macromolecular organic material in primitive chondrite matrices for unraveling the evolution of macromolecular organic carbon from the carbonaceous Asteroids.

 

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Tuesday, August 16, 2022

POSTER SESSION:  MELTED METEORITES: IT’S ALL HOW YOU DIFFERENTIATE IT

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Desch S. J.  Unterborn C. T.  Jackson A. P.

What Should Meteorites from Mercury Look Like? [#6512]
Meteorites may derive from daughter bodies formed after the giant impact. These would sample the earliest composition of Mercury’s crust, not today’s. Don’t reject NWA 7325 as being from Mercury just because it formed at t < 6 Myr.

Irving A. J.  Carpenter P. K.

Anomalous Acapulcoite Stones Found in Close Proximity to the Erg Atouila 001 Achondrite Provide Evidence for a Heterogeneous Sodium-Rich Meteoroid Derived from the Acapulcoite-Lodranite Parent Body [#6370]
Anomalous albite-rich acapulcoite stones found near the Erg Atouila 001 sodic achondrite in Mali may be components of the same heterogeneous meteoroid.

Irving A. J.  Carpenter P. K.

Petrology and Mineralogy of Protogranular Angrite Northwest Africa 14758: Evidence for Even More Diversity in the Angrite Parent Body or Bodies [#6366]
A recently-recovered olivine-rich, metal-bearing protogranular angrite may represent an igneous cumulate from an ancient differentiated planetary body.

Verma K. S.  Rai N.

Petrogenesis of Angrites from Chondritic Precursors [#6298]
Petrogenesis of angrites from chondritic precursors can be derived based on thermodynamic and phase equilibria, provides the closest match (in terms of major oxides) to the range of bulk compositions observed in angrite meteorites.

Mitchell J. T.  Willcocks F. M.  Stephen N. R.

Northwest Africa 6414 Classified after 10 Years: A Complex Polymict Eucrite of at Least Nine Lithological Groups [#6017]
Northwest Africa 6414 is a complex polymict eucrite breccia recording a wide variety of igneous, metamorphic, and shock features. This meteorite has been classified after 10 years of provisional classification.

Roszjar J.  Saavedra M. E.  Riebe M. E. I.  Busemann H.  Yang S.  Humayun M.  Tanaka R.  Varela M. E.

Malotas (b) — A Hidden Eucrite from a Polymict Fall? [#6039]
We present the first cosmochemical data of the recently (re-) discovered Malotas (b) basaltic eucrite.

Limbaugh N. G.  Cartwright J. A.  Hallis L. J.

Martian and HED Melt Inclusion Analyses: Comparisons of Martian and Vestan Achondrite Parent Melt Compositions to Terrestrial Mafic Analogs [#6456]
Melt inclusions within martian and vestan cumulate achondrites can record the parent melt characteristics of their planetary bodies. This study will compare the petrology and compositions of achondrite melt inclusions to terrestrial mafic analogs.

Kruttasch P. M.  Anand A.  Mezger K.

Chromium Isotope Systematics of Main Group Ureilites and the Diamond-Bearing Ungrouped Achondrite Northwest Africa 12969 [#6340]
Chromium isotopes were analyzed to constrain the isotopic reservoir and the temporal evolution of main group ureilites and the diamond-bearing achondrite NWA 12969.

Storz J.  Rout S. S.  Bischoff A.  John T.

The Processing of Graphite in Ureilites observed by Raman Spectroscopy [#6209]
The G band parameters (position and FWHM) of graphite in fine-grained and coarse-grained ureilites form two clusters, which plot on a nearly linear trend reflecting crystallographic order.

Barbaro A.  Domeneghetti M. C.  Fioretti A. M.  Alvaro M.  Nestola F.

Carbon Polymorphs in Frontier Mountain Ureilitic Meteorites: A Correlation with the Increasing Degree of Shock? [#6212]
In this work, we present a multimethodological study about carbon phases on five ureilitic samples from Frontier Mountain (Antarctica) with different degrees of shock recorded by silicates (from U-S2 to U-S6).

Lowe H.  Daly L.  Lee M. R.  Floyd C. J.

Evidence for Shock Induced Diamonds in Ureilite Meteorite Miller Range 090980 [#6145]
This abstract presents new Raman spectroscopy data of diamonds from ureilite Miller Range MIL 090980. Key findings include Full Width Half Maximum values vs Raman shift plot showing consistency with shock origin for the diamonds within this ureilite.

Gower E. R.  Mayne R. G.

Reexamining Mesosiderite Classification Schemes [#6107]
15 percent known / others are understudied. / Five additions help.

Zachén G.  Alwmark C.  Alwmark S.  Ferrière L.

Shocked Mesosiderites: Hidden in Plain Sight? [#6013]
Four mesosiderites were investigated and classified. A relatively new, as well as an old find is revealed to have signs of shock—uncommon in mesosiderites, which begs the question: are the more shocked mesosiderites out there?

Alexander A. M.  Marchi S.  Gestos A.  Chocron S.

Material Properties and Analysis of Impact-Induced Porosity in the Santiago Papasquiero Meteorite [#6319]
Previous hypervelocity impact experiments into the Santiago Papasquiero meteorite resulted in extensive impact-induced cracking. Here, we focus on quantifying the extent and understanding the formation of such cracking in this particular meteorite.

Hamann C.  Greshake A.  Schultze D.  Waldheim J.  Kaliwoda M.  Junge M.  Kaufmann F. E. D.  Hecht L.

Non-Destructive Characterization of Pallasites by Micro X-Ray Fluorescence Analysis [#6471]
We test and evaluate the potentials and limitations of micro X-ray fluorescence analysis for non-destructive, quantitative, correlated studies of large-scale textures and chemical compositions in pallasites.

Renggli C. J.  Horn I.  Klemme S.  Weyer S.

Equilibrium Iron isotope Fractionation in Metal Sulfidation Experiments at 600–1200 °C [#6046]
We determined the iron isotopic fractionation between iron metal and troilite at 600–1200 °C. Troilite is isotopically heavier compared to the iron metal. In contrast, in ordinary chondrites and iron meteorites troilite is isotopically light.

Kruttasch P. M.  Gleißner P.  Becker H.  Wang Z.  Mezger K.

Origin of Siderophile Volatile Element Fractionations in IIAB and IVA Iron Meteorites [#6357]
Siderophile volatile elements (SVE; Ag, Te, Se, S, Cd, In and Tl) were analyzed in IIAB and IVA iron meteorites to better understand the fractionation processes of SVE in iron meteorite parent bodies.

Schrader D. L.  McCoy T. J.  Davidson J.  Lunning N. G.  Torrano Z. A.  Windmill R.  Nagashima K.  Corrigan C. M.  Greenwood R. C.  Rai V. K.  Wadhwa M.

IIAB Iron Meteorites: Formation and Relation to Other Meteorite Groups [#6132]
We present the chemical and isotopic compositions of silicates and chromite in IIAB iron meteorites to investigate the relationship between IIABs and known meteorite groups, the oxygen fugacity of IIABs, and the origin of chromite in the IIABs.

Barnes J. J.  McCubbin F. M.  Hahn T. M.

The Evolution of the IAB Iron-Winonaite Parent Body as Told by Apatite [#6439]
We present the textural occurrence, chemical composition, and chlorine isotope analyses of apatite in the IAB silicate-bearing iron meteorite Caddo County.

Leya I.  Khan H.

Cosmogenic Potassium Isotopes in Iron Meteorites — Current Status of a New Extraction System [#6203]
We present new results from our new extraction system for cosmogenic potassium in iron meteorites.

Moutinho A. L. R.  Crosta A. P.  Navarro M. S.  Enzweiler J.  Silva G. G.  Scholz R.  Queiroga G. N.  Herd C. D. K.  Hill P. J. A.

Three New Brazilian Iron Meteorites: Nova Olinda, Conceicao do Tocantins and Augusto Pestana [#6477]
We report on 3 new Brazilian iron meteorites, named Nova Olinda, Conceicao do Tocantins and Augusto Pestana.

Badekha K. A.  Kruglikov N. A.

Hyperspectral Investigation of the Ataxites Schlieren Bands [#6454]
We observe the front-reflection spectrum of the Schlieren bands in Hoba and Chinga using the Specim IQ hyperspectral camera. The obtained spectra have a stable slope and no more than two obvious peaks, which determines periodic structure.

Begunova A. S.  Kamalov R. V.  Yakovlev G. A.  Grokhovsky V. I.

Growth of the Carbon Nanotubes on the Meteorite Surface: The Influence of the Surface Texture [#6335]
We discussed the results of the synthesis of carbon nanotubes on the surface of the Chinga meteorite. Using artificial single-phase alloys for comparison, the effect of a two-phase substrate was shown. The role of oxidation was investigated.

Pourkhorsandi H.  Debaille V.  Kaskes P.  Tornabene H. A.  Bermingham K. R.  Marrocchi Y.  Leduc T.  Goderis S.

Sirjan 001: An Ungrouped Iron Meteorite Formed in a Sulfur-Rich Environment [#6148]
Sirjan 001 is an ungrouped iron meteorite with a relatively high amount of troilite. In this work, we describe its textural, mineralogical, and isotopic characteristics and discuss its origin and petrogenesis.

Tornabene H. A.  Bermingham K. R.  Patel A.  Ash R. D.  Pourkhorsandi H.

Chemical and Isotopic Composition of Ungrouped Iron Meteorite Sirjan 001 [#6095]
The chemical and isotopic composition of sulfur-rich, ungrouped iron meteorite Sirjan 001 is investigated and it’s relation to other irons is explored.

Hoffmann V. H.  Kaliwoda M.  Junge M.  Hentschel F.  Schmahl W. W.

Erg Chech 002 Ungrouped Achondrite — Systematic Raman Spectroscopy on a Unique Meteorite [#6420]
We report systematic and detailed high resolution investigations on Erg Chech 002 by digital microscopy and LASER Raman spectroscopy. Cristobalite, a multitude of carbon phases and carbonate (symplectite in opx matrix) could be detected in EC 002.

Sawicki J. A.  Ebrahimi C.

Recent Analyses of Enigmatic Find in Sooke Area of Vancouver Island [#6470]
The results of Raman and SEM-EDS analyses on polished surfaces of rock found in Sooke Basin are presented. The active vibrational modes of lonsdaleite appear to be especially well defined. Thus suggests that this rock was exposed to gigantic shock.

Pagu A.  Nichols C. I. O.  Bryson J. F. J.  Wade J.

The Origin of the Pallasites Explored Using Trace Element Analysis of Seymchan [#6390]
Pallasites are stony-iron meteorites composed of olivine crystals and metal, whose origin is still unknown. We use trace element analysis of the metal in the pallasite Seymchan to determine its origin and discuss the formation of the pallasites.

 

Tuesday, August 16, 2022

POSTER SESSION:  CHONDRULES

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Schnuriger N.  Cartier C.  Villeneuve J.  Batanova V.  Regnault M.  Marrocchi Y.

Spinel in CV Chondrules: Investigating Precursors Legacy and Chondrule Thermal Histories [#6054]
We studied Mg-spinel within chondrules and refractory inclusions of two CV3 chondrites using EPMA and SIMS oxygen measurements in order to investigate the conditions of formation of these objects.

Ebert S.  Nagashima K.  Bischoff A.  Berndt J.  Krot A. N.

Al-Rich Chondrules from Unequilibrated Ordinary and CO Carbonaceous Chondrites: Evidence for 16O-Enriched Refractory Precursors [#6010]
The O-isotopic composition of 17 Al-rich chondrules from unequilibrated OCs and 4 Al-rich chondrules from DaG 083 were investigated. 16O-enriched phenocrysts in Al-rich chondrules clearly show the present of refractory material similar to CAIs/AOAs.

Sukhanova K.  Skublov S.

Trace Elements in Silicate Minerals from Porphyritic and Nonporphyritic Chondrles of EOC [#6048]
The distribution of trace elements in silicate minerals of porphyritic and non-porphyritic chondrules of EOC reflects the heterogeneity of the conditions of chondrule-forming processes in the protoplanetary disk and identify their evolution.

Thomassin D.  Piani L.  Villeneuve J.  Marrocchi Y.  Caumon M-C.

Distribution of Volatile Elements in Enstatite Chondrites [#6186]
SIMS images and point analyses performed to observe the link between hydrogen and other volatile elements in primitive enstatite chondrites help us understanding the conditions of EC chondrule formation.

Baeza L.  Patkar A.  McKibbin S. J.  Ávila J. N.  Ireland T. R.

Oxygen Isotope Systematics of Rumuruti Chondrite Chondrules [#6250]
The statistical assessment of O-isotopes in large numbers of chondrules from ordinary and Rumuruti chondrites complement detailed individual chondrule studies and together provide further insights in the O-isotope reservoirs of the inner solar system.

Zenie L. C.  Almeida N. V.  Franchi I. A.  Grady M.  King A. J.  Salge T.  Schofield P. F.  Russell S. S.

Relict Forsterite in Unequilibrated Enstatite Chondrites [#6368]
Identifying and analysing relict forsterite grains within the chondrules of unequilibrated enstatite chondrites to test the hypothesis of an evolving Solar nebular from oxidising to reducing conditions.

Llado L.  Cartier C.  Tissandier L.  Schnuriger N.

Trace Element Partitioning between Olivine, Orthopyroxene, Silicate Melt, Metal and Sulfide in Experimental Chondrules Equilibrated with Nebular Gas [#6207]
We produced experimental chondrules with various ranges of temperature and fO2 in order to study their conditions of formation. We performed EPMA and LA-ICP-MS to obtained major, minor and trace element concentrations to study their partitioning.

Nelson W. S.  Libourel G.  Hammer J.  Shea T.

Revealing the Early Cooling Histories of Type 1A Chondrules Using Diffusion Chronometry [#6438]
Analysis of heterogeneities in type 1A chondrules using diffusion chronometry reveals the relative cooling histories of barred and polyhedral chondrules. This is used to directly address the proposed formation mechanisms of these two chondrule types.

Hezel D. C.  Metzler K.  Hochstein M. L.

Modelling the Relations Between 2D and 3D Size-Frequency Distributions of Chondrules [#6389]
Size-frequency distributions reported from 2D sections need a correction to match the true 3D size-frequency distribution. Here we report a new model solving the previous contradictions of such corrections.

Zhu K.  Becker H.  Jiang Y.  Koefoed P.  Wang K.

Constraining the Kinship Between CB and CH Chondrites and the Formation of CB Chondrules Using Cr Isotopes [#6388]
Bulk CB and CH chondrites show homogeneous and similar ε54Cr compositions, suggesting their common precusor material. Gujba CB chondrules have isotopically heavy δ53Cr values that could be caused by volatile loss or metal-silicate segregation.

Joswiak D. J.  Brownlee D. E.  Gainsforth Z.  Westphal A. J.  Zhang M.  Kita N. T.

Low-Ca Pyroxenes in Comet Wild 2:  Origin from Chondrule-Forming Regions and as Nebular Condensates [#6102]
Low-Ca pyroxenes from comet Wild 2 samples originated in chondrule-forming regions of the inner solar system or as nebular condensates.

 

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Tuesday, August 16, 2022

POSTER SESSION:  SPECIAL SESSION: SAMPLES AND OBSERVATIONS OF RYUGU, BENNU, AND PSYCHE

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Ishimaru K.  Lauretta D. S.

Characterization of Bright Flakes on Asteroid Bennu [#6105]
We characterize bright flakes on asteroid Bennu by their shapes, sizes, and albedo values. Some seem to be embedded in the host rocks and others seem to be sitting on top of them. The possibility that they are part of carbonate veins is investigated.

Jutzi M.  Raducan S. D.  Zhang Y.  Michel P.  Arakawa M.

Constraining Asteroid Ryugu’s Surface Properties from Simulations of the SCI Impact [#6201]
Our simulations reproduce well the outcome of the SCI impact. We find that a small amount of cohesion (< 1 Pa) can strongly affect the cratering efficiency, leading to a “crater reduction effect” for small-scale impacts on asteroid surfaces.

Pilorget C.  Bibring J.-P.  Okada T.  Brunetto R.  Yada T.  Loizeau D.  Riu L.  Usui T.  Hatakeda K.  Nakato A.  Yogata K.  Abe M.  Aléon-Toppani A.  Baklouti D.  Carter J.  Hitomi Y.  Kumagai K.  Langevin Y.  Lantz C.  Le Pivert-Jolivet T.  Miyazaki A.  Nagashima K.  Nishimura M.

NIR Hyperspectral Imaging of Hayabusa2 Returned Samples by the MicrOmega Microscope Within the ISAS Curation Facility [#6226]
We will present the first results of the characterization by MicrOmega, a NIR hyperspectral microscope present in the Curation Facility, of the samples returned from Ryugu and will discuss their implications.

Loizeau D.  Pilorget C.  Riu L.  Brunetto R.  Bibring J.-P.  Nakato A.  Aléon-Toppani A.  Hatakeda K.  Yogata K.  Carter J.  Le Pivert-Jolivet T.  Yada T.  Okada T.  Usui T.  Langevin Y.  Lantz C.  Baklouti D.  Miyazaki A.  Nishimura N.  Nagashima K.  Kumagai K.  Hitomi Y.  Abe M.

MicrOmega Detections of Carbonates in Ryugu Returned Samples Within the Hayabusa 2 JAXA Extraterrestrial Curation Center [#6305]
The Hayabusa 2 mission returned samples from Ryugu. The hyperspectral microscope MicrOmega analyzes all grains in the NIR within the curation facility. Numerous carbonate detections are made, of different sizes and spectral features.

Nguyen A. N.  Mane P.  Piani L.  Hayabusa2-Initial-Analysis Chemistry  Hayabusa2-Initial-Analysis Core

Oxygen Isotopic Mapping of a Clast in Fragment C0002 from Asteroid Ryugu [#6382]
NanoSIMS analysis of Mg-rich silicates within a clast found the majority to be 16O-rich. Two silicates had compositions similar to bulk C0002 Ryugu. One 16O-poor, O-rich grain may have formed through alteration of its precursor by heavy water.

Ma C.  Nakamura T.  Mikouchi T.  Yoshida H.  Nakashima D.  Zolensky M. E.  Uesugi M.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Mg-Phosphate from Asteroid Ryugu: An Original H2O-Rich Phase [#6134]
Mg-phosphate, dehydrated by the day-time heat and under vacuum on the surface of asteroid Ryugu, was originally H2O-rich, formed on the Ryugu parent body via aqueous alteration.

King A. J.  Russell S. S.  Nakamura T.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Modal Mineralogy of Asteroid 162173 Ryugu by X-Ray Diffraction [#6182]
Ryugu particle C0002 (plates 3 and 4) contains abundant phyllosilicates, plus sulfides, oxides, and carbonates, having formed through low temperature aqueous alteration.

Harrison C. S.  King A. J.  Jones R. H.  Russell S. S.  Nakamura T.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Fe-Sulfides in Ryugu Particle C0025_01: A Comparison with CI and CY Chondrites [#6288]
We compare the morphology, composition and abundance of coarse (>10 µm) Fe-sulfide grains in Ryugu particle C0025_01 to those within the matrices of the CI chondrites Ivuna and Orgueil, and the CY chondrites Yamato (Y)-82162 and Y-86720.

Tkalcec B. J.  Tack P.  De Pauw E.  Lindner M.  Di Michiel M.  Bazi B.  Vekemans B.  Uesugi M.  Nakamura T.  Matsumoto M.  Fujioka Y.  Nakashima D.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Vincze L.  Brenker F. E.

Rare Earth Element Analysis by SXRF of Two Ryugu Rock Fragments Collected During the Hayabusa2 Space Mission [#6238]
We report on REE concentrations measured by high-energy SXRF in mineral grains apatite, dolomite, pyrrhotite and the matrix of two rock fragments from asteroid Ryugu and compare these to those of carbonaceous chondrites.

Takir D.  Hibbitts C. H.  Stockstill-Cahill K. R.  Amano K.  Matsuoka M.  Nakamura T.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Spectral Analysis of (162173) Ryugu Returned Sample Under Simulated Space Vacuum Conditions [#6283]
Ultraviloet, visible and near-infrared spectra of (162173) Ryugu returned sample was measured in simulated space vacuum conditions.

Daly L.  Lee M. R.  Smith W.  McFadzean S.  Martin P-E.  Bagot P. A. J.  Fougerouse D.  Saxey D. W.  Reddy S.  Richard W. D. A.  Nogouchi T.  Yurimoto H.  Nakamura T.  Yabura H.  Naraoka H.  Okazaki R.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

The Rarity of Space Weathered Grains from Ryugu: Regolith Abrasion [#6266]
Ryugu’s spectras blue. / To space weather might be due. / Grains there are but few.

Ishii H. A.  Bradley J. P.  Dobrica E.  Ohtaki K.  Noguchi T.  Matsumoto T.

The Nature of GEMS-Like Material from Asteroid Ryugu Regolith [#6152]
GEMS-like material in two highly porous Ryugu grains, although morphologically similar at modest magnification, is inconsistent with GEMS in interplanetary dust particles and micrometeorites and consistent with parent body alteration products.

Broadley M. W.  Byrne D. L.  Füri E.  Marty B.  Okazaki R.  Yurimoto H.  Nakamura T.  Noguhi T.  Naraoka H.  Yabuta H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa Initial Analysis Volatile Team

Investigating the Nitrogen-Noble Gas Relationship of Asteroid Ryugu and the Link to Other Carbonaceous Chondrites [#6159]
We analysed 2 grains from the asteroid Ryugu for noble gas and nitrogen isotopes. We find that the nitrogen and noble gas signature of Ryugu is similar, but not identical, to other CI chondrites.

Meshik A.  Pravdivtseva O.  Okazaki R.  Yurimoto H.  Nakamura T.  Noguchi T.  Naraoka H.  Yabuta H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis Volatile Team The.

Noble Gas Isotopic Analyzes of the Asteroid Ryugu Samples: Initial Results of Multi-Step Pyrolysis [#6147]
High sensitivity mass spectrometry combined with low background gas extraction system allows to measure all isotopes of noble gases released by multistep pyrolysis of sub-milligram Ryugu samples.

Nagao K.  Okazaki R.  Nishiizumi K.  Caffee M. W.  Masarik J.  Yurimoto H.  Nakamura T.  Noguchi T.  Naraoka H.  Yabuta H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis Volatile Team

Noble Gases of Eight Hayabusa2 Samples from the Asteroid Ryugu [#6320]
Noble gases of 8 Hayabusa2 samples from the asteroid Ryugu were measured to investigate cosmic ray exposure condition on the asteroid surface by combining concentrations of stable noble gases and radionuclides produced by cosmic ray irradiation.

Zolensky M.  Dolocan A.  Bodnar R.  Gearba I.  Martinez J.  Han J.  Nakamura T.  Tsuchiyama A.  Matsuno J.  Sun M.  Matsumoto M.  Fujioka Y.  Enokido Y.  Uesugi K.  Takeuchi A.  Yasutake M.  Miyake A.  Okumura S.  Mitsukawa I.  Takigawa A.  Mikouchi T.  Enju S.  Morita T.  Kikuiri M.  Amano K.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Update on Measurement of the Composition of Ryugu Fluid Inclusions [#6011]
Update on Ryugu fluid inclusions.

Kebukawa Y.  Quirico E.  Dartois E.  Bonal L.  Engrand C.  Duprat J.  Mathurin J.  Dazzi A.  Deniset-Besseau A.  Yabuta H.  Yurimoto H.  Nakamura T.  Noguchi T.  Okazaki R.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.  Hayabusa2-Initial-Analysis IOM Team

Uniqueness and Similarity of Organic Matter in the Asteroid Ryugu and Carbonaceous Chondrites Revealed by Infrared Transmission Spectroscopy [#6181]
The FTIR organic signatures of the Ryugu samples generally agree with CI chondrites but some differences exist. The differences could be attributed to modification of organic matter in carbonaceous chondrites due to long preservation on the Earth.

Stroud R. M.  De Gregorio B. T.  Burgess K. D.  Cymes B.  Barosch J.  Nittler L. R.  Okumura T.  Hashiguchi M.  Yabuta H.  Noguchi T.

Analytical Electron Microscopy of Organic Matter in Returned Samples from Asteroid Ryugu [#6064]
Transmission electron microscopy studies of organic matter in returned Ryugu samples reveal abundant diffuse carbon, nanoglobules, and nanodiamonds, consistent with organic matter in CI carbonaceous chondrites.

De Gregorio B. T.  Cody G. D.  Stroud R. M.  Kilcoyne A. L. D.  Sandford S. A.  Nittler L. R.  Barosch J.  Yabuta H.  Kebukawa Y.  Okumura T.  Hashiguchi M.  Yamashita S.  Takeichi Y.  Takahashi Y.  Yurimoto H.  Nakamura T.  Noguchi T.  Okazaki R.  Naraoka H.  Sakamoto K.  Tashibana S.  Watanabe S.  Tsuda Y.  Hayabusa2 Organic Macromolecule Team

Functional Group Compositions of Macromolecular Organic Grains in (162172) Ryugu in Relation to Carbonaceous Chondrites [#6292]
Carbonaceous grains in Ryugu are consistent with those of CI chondrites, but often contain more aromatic functional groups. We connect the functional chemistry of grains to their isotopic compositions.

Schmitt-Kopplin Ph.  Hertkorn H.  Harir M.  Lucio M.  Naraoka H.  Hayabusa2-Initial-Analysis SOM Team  Hayabusa2-Initial-Analysis Core

Molecular Atlas and Structural Complexity Revealed with Ultrahigh Resolution Mass Spectrometry and Nuclear Magnetic Resonance Spectroscopy of Ryugu [#6040]
Ryugu sample A0106 showed extreme chemical diversity and complexity, close to low temperature water altered meteoritic materials.

Tachibana S.  Yurimoto H.  Nakamura T.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Hayabusa2-Initial-Analysis Team

Initial Analysis Activity of Hayabusa2-Returned Samples from C-Type Near-Earth Asteroid (162173) Ryugu [#6111]
The initial analysis of Ryugu sample, returned by Hayabusa2, went smoothly thanks to the dedication and hard work of the team even under the COVID-19 pandemic. Ryugu is the freshest CI chondrite!

 

Tuesday, August 16, 2022

POSTER SESSION:  SPECIAL SESSION: RECOVERY OF FRESHLY FALLEN METEORITES

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Sansom E. K.  Bland P. A.  Devillepoix H. A. R.  Towner M. C.  Anderson S.  Cupak M.

Updates from the Australian Desert Fireball Network [#6403]
We will present the latest recoveries of orbital meteorites by the Desert Fireball Network, as well as highlights of recent scientific results.

MacArthur J. L.  Joy K. H.  Harvey T. A.  Jones R. H.  Evatt G. W.  Almeida N. V.  Malley J.  Greenwood R. C.  Findlay R.  King A. J.

Lost Meteorites of Antarctica Project: Classifications to Date [#6414]
Unaltered Chondrite / And CM-anomalous / Antarctic Space Rocks.

Zucolotto M. E.  Tosi A. A.  Andrade D. P. P.  Rios D. C.

Brazilian Meteorite Recently Falls and the Need of a Regulatory Law [#6515]
In this work we will talk about the growth in the number of meteorites registered in Brazil, even without financial support from the government for researchers. We will emphasize the need to create a law that regulates the commercialization of these extraterrestrial objects.

Genge M. J.  Alesbrook L. S.  Almeida N. V.  Bates H. C.  Bland P. A.  Boyd M. R.  Burchell M. J.  Collins G. S.  Cornwell L. T.  Daly L.  Devillepoix H. A. R.  Hallatt D.  Hamann C.  Hecht L.  van Ginneken M.  Greshake A.  Jenkins E.  Johnson D.  King A. J.  Mansour H.  McMullan S.  Mitchell J. T.  Rollinson G.  Russell S. S.  Schroder C.  Stephen N. R.  Suttle M. D.  Tandy J. D.  Trimby P.  Sansom E. K.  Spathis V.  Willcocks F. M.  Wozniakiewicz P. J.

The Fusion Crust of the Winchcombe Meteorite: Vigorous Degassing During Atmospheric Entry [#6345]
We report features in the fusion crust of the Winchcombe CM2 chondrite that have not been previously reported in crusts and testify to vigorous degassing. These features may identify the ablation materials of intensely altered chondrites.

Greenwood R. C.  Findlay R.  Martins R.  Steele R. C. J.  Rehkamper M.  Shaw K.  Savage P. S.  Morton E.  Franchi I. A.  Elliot T.  Suttle M. D.  King A. J.  Anand M.  Malley J.  Zhao X.  Johnson D.  Liu M-C.  McCain K.  Stephen N.

Cr, Cd, Si, Te, Ti, Zn and O-Isotope Composition of the Winchcombe (CM2) Meteorite [#6356]
Collected shortly after its fall, Winchcombe (CM2) is one of the cleanest CCs so far recovered. New Cr, Cd, Si, Te, Ti, Zn and O-isotopic data throws light on the origin and evolution of this important meteorite and its relationship to other CMs.

Ferrière L.  Roszjar J.  Povinec P.

The Kindberg L6 Ordinary Chondrite Fall and Recovery in Austria – A Case Study of Citizen Science [#6116]
We report here on the different steps and activities that finally resulted in the recovery of the Kindberg L6 ordinary chondrite (Austria), a case study of Citizen Science, as well as on preliminary scientific investigations conducted on the sample.

Krzesinska A. M.  Tyminski Z.  Kmieciak K.  Shrbeny L.  Spurny P.  Borovicka J.

The Antonin L5 Chondrite Fall (Poland): Mineralogy and Petrology of Meteorite, Bolide Trajectory and Meteoroid Orbit [#6144]
On 15/07/2021 fireball over Poland was recorded, and meteorite (Antonin) recovered in the predicted fall area. It is L5 chondrite with unusual sulfide mineralogy. Reconstructed orbit of meteoroid is different from other known orbits of L chondrites.

Meier M. M. M.  Maden C.  Busemann H.

Are Přibram, Neuschwanstein and Benešov Fragments of the Same Near-Earth Asteroid? A Re-Evaluation in the Light of Almahata Sitta [#6453]
Přibram (H5), Neuschwanstein (EL6) and Benešov (a and b; H5 and LL3.5) are three meteorites with associated orbits - and these orbits are also very similar. We discuss whether they could be derived from a single near-Earth asteroid.

Anghel S.  Birlan M.  Nedelcu D. A.

Source Energy Estimation of Ton TNT-Scale Impacts Based on Well-Known Meteorite Falls [#6004]
We discuss several methods of estimating the impact energy of well-known bolides, which in turn can be used to better constrain the pre-atmospheric mass of decimeter-scale meteoroids.

 

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Tuesday, August 16, 2022

POSTER SESSION:  METEORITE CURATION, EDUCATION AND OUTREACH

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Almeida N. V.  Bates H. C.  King A. J.  Smith C. L.  Russell S. S.  UKFAll  Winchcombe Consortium

Curation of the Winchcombe CM Chondrite Fall [#6285]
We describe the circumstances of the recovery and the process of curating the Winchcombe CM chondrite that fell in the UK in February 2021.

Bonato E.  Schwinger S.  Maturilli A.  Helbert J.

A New Laboratory Facility in the Era of Sample Return: The Sample Analysis Laboratory (SAL) at DLR Berlin [#6194]
New laboratory facility for mineralogical and geochemical analyses at is being setup at DLR (Berlin) with special focus to materials from sample return missions.

Cowden T. R.  Snead C. J.  Connely W. D.

Glovebox Mockups Aiding Mission Preparation and Laboratory Planning [#6451]
Mockups are a common tool for understanding engineering problems and doing limited tests of a design, and can positively impact preparations for curation of astromaterials, both in procedure rehearsals and lab layout design.

Funk R. C.  Montoya M.  Plummer J.  Allums K.  Snead C. J.  Connelly W.  Cowden T.  Gonzales C.  Llanos A.  Lunning N. G.  Martinez S.  Righter K.

New Hayabusa2 and OSIRIS REX Curation Facilities at NASA Johnson Space Center [#6371]
In September of 2020, a massive construction project began to provide curation facilities to meet the needs of two incoming asteroid collections, Hayabusa2 and OSIRIS-REx.

Goodrich C. A.  McCubbin F. M.  Lunning N. G.  Boyce J. W.  Filiberto J.  Shaddad M. H.

XSPACE: An LPI-ARES (JSC) Facility for Classification and Curation of Meteorites [#6127]
XSPACE is a new facility dedicated to the classification, curation, and allocation of non-Antarctic meteorites following protocols and standards similar to those used for the U.S. Antarctic Meteorite Collection. It is a joint project of LPI and ARES-JSC.

Holt M. C.  Herd C. D. K.

Conservation Considerations for Iron Meteorites in the University of Alberta Meteorite Collection [#6475]
Plans for a pilot project to test long-term storage conditions for iron meteorites in the University of Alberta Meteorite Collection to stabilize the condition and prevent further damage of meteorite specimens vulnerable to corrosion.

Hughes G. E.  Russell S. S.  Schofield P. F.  Suttle M. D.  Miller C. G.  Almeida N. V.  Vaccaro E.

Collecting Fossil Micrometeorites from Micropalaeontology Collections: A Case Study Using Devonian Residues from the Ural Mountains [#6424]
Fossil micrometeorites (MMs) have been extracted from residues of Devonian rocks. These I-type MMs will be used to understand extraterrestrial flux during this period, diagenesis and alteration of MMs, and may shed light on past atmospheric processes.

Hughes G. E.  Russell S. S.  Schofield P. F.  Suttle M. D.  Miller C. G.  Almeida N. V.  Vaccaro E.

Recovering Micrometeorites from Historical Collections: Cosmic Dust from HMS Challenger Deep Sea Deposits [#6427]
Samples of sediments from the voyage of HMS Challenger are revisited to extract new micrometeorites (MMs). This will expand the existing collection and provide new insights into extraterrestrial flux and seafloor storage and alteration of MMs.

Inada S.  Nakato A.  Furuya S.  Nishimura M.  Yada T.  Abe M.  Usui T.  Yoshida H.  Mikouchi T.  Sakamoto K.  Okazaki R.  Sawada H.  Tachibana S.

Ryugu Particles Found Outside of the Hayabusa2 Sample Container [#6080]
Two sub-millimeter-sized particles discovered outside of the Hayabusa2 sample container before the container opening at the JAXA curation are found to be grains originated from Ryugu, most likely expelled from the sample container in space.

Lunning N. G.  Righter K.

Nomenclature for the OSIRIS-REx Returned Sample Collection to be Curated at NASA Johnson Space Center [#6295]
We describe the nomenclature system under development for the bulk sample and hardware that will be returned by the OSIRIS-REx mission.

Righter K.  Jakubek R.  Fries M. D.  Schutt J.  Pando K.  Harrington R.

Petrologic Sub-Types, Sub-Groups, and Pairing for CV Chondrites in the US Antarctic Meteorite Collection [#6442]
We combine new Raman spectral data and metal and sulfide analyses to carry out a comprehensive update of CV chondrite classifications for the US Antarctic meteorite collection.

Satterwhite C. E.  Pando K. M.  Harrington R. S.  Calva C. D.  Righter K.

Overview of the Antarctic Meteorite Collection at Johnson Space Center [#6436]
Information pertaining to curation/processing of the Antarctic Meteorites at NASA/JSC meteorite lab.

Graff P. V.  Willis K.  Miller R.  Foxworth S.  Blumenfeld E.  Charney D.

Engaging Learners with NASA’s Antarctic Meteorites and Apollo Moon Rocks [#6521]
Reimagined resources focusing on NASA’s Antarctic Meteorite and Apollo Lunar Collections build knowledge and skills encouraging learners of varying levels of expertise to engage with these collections thus inspiring the next generation of scientists.

Corrigan C. M.  McCoy T. J.  Righter K.  Satterwhite C.  Pando K.  Hoskin C. J.

Antarctic Meteorites: A Statistical Look at a Uniquely Valuable Resource [#6423]
Stats from hot and cold / Examined for secrets told / Learn from what is old.

Werner S. C.  Krzesińska A. M.  Bultel B.  PTAL Team The.

Planetary Terrestrial Analogues Library    Rock Collection and Spectral Database for Analogue Studies of Igneous and Aqueous Environments on Mars [#6198]
The Planetary Terrestrial Analogues Library is a rock collection and spectral database (www.ptal.eu). The strength of the collection is the multi-technique analyses of natural mineral assemblages. The physical samples are curated and for loan.

Zucolotto M. E.  Ornellas I. D.  Tosi A. A.

Using HHXRF to Screen Rescued Meteorites from the National Museum’s Fire [#6447]
The use of HHXRF for identification and classification of not identified meteorites rescued from Rio de Janeiro’s National Museum fire.

Araujo A, V.

An Education Project for Interactive Teaching of Planetary Science in Colombia [#6002]
This poster presentation will give a summary of two years of rich activities but above all how to link research and outreach around planetary science topics specifically NEA, fireball, meteorites events, and impact events.

Hirakawa N.  Hatakeyama M.  Warriner L.  Kebukawa Y.  Nakato A.  Changela H. G.

Planetary Science in Schools Using Tabletop Scanning Electron Microscopy [#6172]
High school students in St Paul’s School, London, the UK and Seiko Gakuin High School, Yokohama, Japan were introduced and inspired to planetary science studying with table top SEM on carbonaceous chondrites.

Fulford R. E.  Lauretta D. S.  Golish D. R.  DellaGiustina D. N.

Quantitative Reflectance Imaging of Samples Returned from Asteroid Bennu [#6532]
I present my work in designing and testing a Qualitative Reflectance Imaging System (QRIS) for the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx).

 

Tuesday, August 16, 2022

POSTER SESSION:  MOON

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Xie L. F.  Chen H. Y.  Miao B. K.  Gao X. K.  Huang F. X.

Formation of Lunar Pink Spinel Anorthosites as Told by the Meteorite NWA 13191 [#6071]
Fifty-nine Mg-spinel-bearing lithic clasts in NWA 13191 meteorite are selected as the main objects of this study. We aim to investigate its relationship to the remotely defined PSA, and the formation of PSA clasts in the NWA 13191.

Wang T.  Li S.

Diversity of Basalts in Lunar Feldspathic Meteorites [#6301]
Lunar meteorites are possible samples excavated at random locations on the lunar surface in addition to Apollo and Lunar missions. The study of the basalts contained within expands our knowledge of the Moon. We studied basalts in three meteorites.

Churkin K. O.  Nefedyev Y. A.  Andreev A. O.  Demina N. Y.  Korchagina E. P.  Borovskih V. S.

Model of the Libration Zone of the Moon in the System of the Fundamental Star Catalog [#6249]
On the basis of large-scale images of the Moon with stars, a model of the libration zone of the Moon was built. The studies have shown that the model data center is close to the lunar ephemeris center of mass given by the DE423 theory.

Chen J. Y.  Li S. L.  Hsu W. B.  Liao S. Y.  Zhu M. H.

Petrology, Mineral Chemistry and U-Pb Chronology of Lunar Feldspathic Meteorite Northwest Africa 11479 [#6114]
we analyzed the mineral chemistry of magnesian anorthositic material and the age of associated U-rich minerals in the NWA 11479 with the aim of a better understanding of their origin and magnesian lunar crust.

Churkin K. O.  Andreev A. O.  Demina N. Y.  Nefedyev Y. A.  Korchagina E. P.  Borovskih V. S.

Dynamic Coordinates of Mösting a Lunar Crater [#6254]
The M-estimation method was used to determine the robust values of the dynamic coordinates of Mösting A crater (CMC). When constructing M-estimates of coordinates, the Huber function was used. CMC is important in studying the rotation of the Moon.

Distel A. G.  Davidson J.  Wadhwa M.  Hervig R. L.

Water on the Moon: Insights from Nominally Anhydrous Pyroxene in the Lunar Basaltic Meteorite Elephant Moraine 96008 [#6120]
Here we report H isotope compositions and water contents of nominally anhydrous pyroxene in the lunar basaltic meteorite Elephant Moraine 96008 via secondary ion mass spectrometry (SIMS).

Nefedyev Y. A.  Kronrod E. V.  Andreev A. O.

Investigation of the Parameters of the Lunar Mantle with the Purpose of Creating a High-Speed Seismic Model of the Lower Mantle [#6265]
This work is focused on determining the structure of the silicate mantle (M_E) according to the high-speed seismic model of the lower mantle. A comparative analysis of the obtained data with the seismic model was carried out.

Saini R.  Mijajlovic T.  Herd C. D. K.  Walton E. L.

Northwest Africa 14340: Petrological Characterization and Shock Metamorphism of a Lunar Regolith Breccia [#6450]
Lunar meteorite Northwest Africa 14340 is mineralogically and petrologically characterized in this study, with a focus on the shock effects in lithic clasts and the nature of the matrix between macroscopic components.

Nefedyev Y. A.  Andreev A. O.

Creation of a Stochastic Model of H2O Distribution for the Lunar Surface [#6268]
The work is focused on regression modeling of the quantitative content of H2O on the surface of the Moon according to space observations and its correlation with the material composition of the lunar surface.

Zagidullin A. A.  Petrova N. K.  Andreev A. O.  Nefedyev Y. A.

Simulation of the Size and Flattening of the Lunar Core for Synchronization with Data on Laser Observations [#6278]
The computer simulation method developed by us is focused on determining the parameters of the free nutation of the lunar core and observing stars using the lunar automated zenith telescope.

Zagidullin A.  A.  Petrova N. K.  Andreev A. O.  Nefedyev Y.  A.

Development of the Theory of Physical Libration of the Moon Taking into Account the Lunar Two-Layer Model Including a Solid Mantle and a Liquid Core [#6282]
The parameters of the physical libration of the Moon (PLM) were obtained, taking into account the two-layer model (solid mantle and a liquid core), an algorithm was developed for determining the PLM parameters at the program levels.

Andreev A. O.  Korchagina E. P.  Demina N. Y.  Nefedyev Y. A.

Construction of a System of Selenocentric Coordinates Based on the Results of the Lunar Space Missions “Apollo,” “Zond,” “Clementine,” “Kaguya,” “LRO,” and ”GRAIL” [#6326]
In this work, the development of a methodology and software for determining statistical indicators designed for studying the dynamic states of the lunar selenocenter was carried out.

Li S.  Xue Z.

Crystal Size Distribution of Lunar High-Al Basalt Northwest Africa 4898 [#6230]
In this study, we analyzed the CSD of plagioclase in NWA 4898 to investigate its formation mechanism, cooling rate, and crystallization process. We also compared the plagioclase CSD of NWA 4898 and other lunar basalts and impact melts.

Karimi K.  Kletetschka G.

Variations of the Shida Number, Horizontal Displacement and Virtual Deformation over the Moon [#6020]
Based on the variable response of the lunar crust to meteoritic impacts in the location of the impact craters, we extract the relative variation of the horizontal compliance, Shida number, Horizontal displacement and virtual deformation for the Moon.

Blewett D. T.  Halekas J.  Ho G. C.  Greenhagen B. T.  Anderson B. J.  Vines S. K.  Regoli L.  Jahn J.-M.  Kollmann P.  Denevi B. W.  Meyer H. M.  Klima R. L.  Cahill J. T. S.  Hood L. L.  Tikoo S.  Zou X.-D.  Wieczorek M.  Lemelin M.  Fatemi S.  Cloutis E. A.  Cox A. L.  Cooper S. A.  Ames W. F.

Lunar Vertex: A Low-Cost Lander-Rover Investigation of Reiner Gamma [#6022]
Lunar Vertex is the first of a new class of science investigations that will be delivered to the Moon on commercial landers. Lunar Vertex will study the iconic Reiner Gamma lunar swirl, and the associated magnetic anomaly and mini-magnetosphere.

Magana L. O.  Blewett D. T.  Martin A. C.  Basic G.  Wiker J.  Sniderman A.  Newhook J.  Denevi B. W.  Prem P.  Sato H.

Early Results from the Planetary Surface Texture Lab: Polarimetry and Photometry of Jsc-1A Lunar Simulant [#6337]
The Planetary Surface Texture Laboratory provides a unique opportunity to characterize the photometric and polarimetric response of various planetary regolith analogs. We will present early PSTL results from a study of JSC-1A lunar mare simulant.

Fairweather J. H.  Lagain A.  Servis K.  Nemchin A.  Benedix G. K.  Bland P. A.

Finding Secondary Crater Clusters Using Automated Crater Detection Across Chang’e 5 Landing Site [#6176]
Using a Crater Detection Algorithm to map secondary crater clusters on high-resolution lunar image datasets (LRO-NAC and Kaguya). This pilot study focuses on the Chang’e 5 landing site and sampled material.

Law E. S.  Day B. H.

A Terrestrial Analog Portal in Support of Lunar Surface and Impact Analyses [#6149]
We are proposing to add a Terrestrial Analog Trek to the suite of solar system Treks portals (https://trek.nasa.gov). It will greatly facilitate comparative planetology and enhanced understanding of key processes such as impact cratering.

Talafha M. F.  Al-Wardat M. A.  Al-Naimiy H. A.  Abdulla A. E.  Azmi M. M.  Chogle F. A.  Rajawat A. P.

First Lunar Flash Detected from UAE by Sharjah Lunar Impact Observatory (SLIO) Confirmed by Far Telescope [#6206]
We proved in this project that it was successful with the recording of the first collision, As a new kind of project in the Middle East and North Africa, this project will open the door for amateur astronomers to start observing this kind of event.

 

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Tuesday, August 16, 2022

POSTER SESSION:  IMPACTS I

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Kenkmann T.

The Terrestrial Impact Crater Record [#6213]
A statistical analysis of all 208 craters published in the TanDEM-X Atlas on Terrestrial Impact Structures (Gottwald et al. 2020) plus recent discoveries is presented with regard to their morphologies, structures, ages, and year of discovery.

Volsgaard Christensen P.  Bender Koch C.

Mechanically Induced Changes of Vesicle Glaze by Localized Impact [#6429]
Secondary deformation structures are described within the glaze layer of vesicles from Wabar crater impactites.Brittle fractures delineate the affected zone around the impact.

Pickersgill A. E.  Macente A.  Corrigan C.  Daly L.  Griffin S.  O’Brien A. C.

Peeking Inside Flanged Button Tektites using XCT [#6304]
Button flange tektites / XCT reveals inside / Flow textures abound.

Martell J.  Alwmark C.  Ferrière L.  Alwmark S.  Woracek R.  Hall S.  Helfen L.  Tengattini A.

Neutron/X-Ray Investigation of an Impact Melt Rock Sample from the Luizi Impact Structure (DR Congo) [#6240]
We present initial neutron/X-ray tomography results from an ongoing study of an impact melt rock sample from the Luizi impact structure.

Griffin S.  Piazolo S.  Walshaw R.  Pickersgill A.  Daly L.  Lee M. R.  Hale L.  Kring D. A.

Danny Boy Explosion Crater: Preliminary Findings [#6297]
Explosion in rock. / Makes an analogue crater. / Does CPO change?

Seybold L.  Trepmann C. A.  Kaliwoda M.  Dellefant F.  Hölzl S.

Twinned Calcite in Polymict Breccias from the Ries Impact Structure — Brecciation and Mixing of Target Rocks [#6287]
High density of fine-lamellar calcite twins (>1/µm, <0.5 µm width) within polymict impact breccias of the Ries impact structure indicates high differential stresses (several hundreds of MPa to 1 GPa) during brecciation and mixing of target rocks.

Garroni N. D.  Osinski G. R.  Flemming R. L.

Determining Shock Levels in Carbonate Rocks at the Crooked Creek Crater, Missouri Using X-Ray Diffraction [#6019]
X-ray diffraction of target rocks from the Crooked Creek crater in Missouri reveals preservation of shock in carbonate minerals, specifically dolomite. Higher shock levels are observed closer to crater center and lower levels in more distal samples.

Dellefant F.  Trepmann C. A.  Gilder S. A.  Sleptsova I. V.  Kaliwoda M.  Schmahl W. W.  Weiss B. P.

Shock Related Microfabrics of Ilmenite and Associated Fe-Bearing Phases [#6243]
Ilmenite from shocked basement rocks provides a high potential to record a broad range of different shock conditions by specific microstructures (including twins, exsolution lamellae, foam structure, high-temperature Fe-Ti-phases).

Quintero R. R.  Cavosie A. J.  Alwmark S.  Haines P. W.  Timms N. E.

Shocked Quartz Confirms an Impact Origin for the Ilkurlka Structure, Western Australia [#6174]
Ilkurlka is a ~12 km diameter circular geophysical anomaly located in Western Australia. Past studies identified it as a possible impact but lacked diagnostic evidence. We report shocked-quartz with multiple sets of PDFs, confirming an impact origin.

Poelchau M. H.

Constraints on the Pressure Range of Feather Features in Shocked Quartz [#6499]
In several recent publications, the shock pressure range for the formation of feather features has incorrectly been given as 7-10 GPa. Shock barometry of impactites containing feather features yields shock pressures of 7 to 20 GPa.

Hyde W. R.  Kenny G. G.  Whitehouse M. J.  Larsen N. K.

U–Pb Analyses of Neoblastic and Porous Monazite Reveal Target Rock and Impact Ages at the Hiawatha Impact Structure, Greenland [#6162]
We explored U-Pb geochronology on neoblastic and porous monazite from impact melt rocks from the Hiawatha impact crater, Greenland.

Tolometti G. D.  Osinski G. R.  Erickson T. M.  Neish C. D.

Evolution of the Cote Creek Impact Melt Deposit at the Kamestastin Lake Impact Structure [#6244]
Constraining the temperature of the Mistastin Lake impact structure using geochemical analyzes and zircon and zirconia crystallographic orientation data.

Cavosie A. J.  Timms N. E.  Cousins V.  Erickson T. M.

(F)RIGN Zircon Confirms FRIGN Zircon [#6232]
We report FRIGN zircon with preserved reidite. FRIGN zircon forms as a consequence of zircon transforming to reidite, and then reidite reverting back to zircon, creating a distinctive disorientation relation of 90/<110> among zircon neoblasts.

Plan A.  Lindgren P.  Erickson T. M.  Söderlund U.

Reidite Discovered in the Triassic Distal Impact Ejecta Deposit of Southwest Britain [#6280]
Here we report the first occurrence of the rare mineral reidite, a high-P polymorph of zircon, found within the “Wickwar” distal impact ejecta of southwestern Britain.

Kenny G. G.  Pasek M. A.

The Response of Zircon to a Lightning Strike: Characterizing Non-Impact-Related Extreme Pressure–Temperature Excursions at Earth’s Surface [#6057]
Imaging and microstructural characterization of zircon in a fulgurite, a tubular body of glass formed in response to a lightning strike, reveals baddeleyite rims and evidence for precursor cubic ZrO2 – previously only documented in impact settings.

Sahoui R.  Belhai D.

Tin Bider Impact Crater (Algeria): Geological Description and Shock Stages [#6041]
Tin Bider is a 6km diameter crater that affects a thick (500 m) pile of sedimentary rocks. We describe its different parts (central peak and rings). Impactites inside the crater show a shock phase due to deviatoric pressure.

Jurak H. A. M.  Walton E. L.  Shaw C. S. J.

Investigating the Formation Conditions of High-Temperature Breccias at the Steen River Impact Structure (Alberta, Canada): An Integrated Experimental and Computational Approach [#6092]
Sintering experiments, coupled with thermodynamic models, constrain the formation conditions of thermally-metamorphosed breccias at the Steen River impact structure.

Li Y.  McCausland P. J. A.  Flemming R. L.  Hetherington C. J.  Zhao B.

Shock Effects Observed and Quantified in Single Crystals [#6177]
Observing and quantifying destructive shock effects in large olivine crystals in shocked meteorites by EBSD and XRD.

Rabin S.  Goderis S.  Krämer Ruggiu L.  Smit J.  Debaille V.

Iron Isotope Compositions of Distal Impact Spherules from the K-Pg Boundary: Insight into the Processes Taking Place During Hypervelocity Impact Events [#6044]
We investigated whether Fe isotope variations are recorded and retained in Chicxulub impact spherules and whether such isotopic variability is related to the spherule formation processes or to differences in the transportation mechanisms.

Gulick S. P. S.  McCall N.  Ross C.  Stockli D.  Rasmussen C.  Christeson G. L.  Hesse M.  Malenda M.  Lopes E. L.  Chafee T. M.  Tikoo-Schantz S. M.  Vanorio T.  Morgan J. V.

Chicxulub Crater Impact Induced Hydrothermal System Investigations [#6210]
Summary of observations on the potential long-lived (>11 myr) nature of the Chicxulub impact induced hydrothermal system initiated at 66 Ma (K-Pg boundary), which supported a thermophilic ecosystem.

Goderis S.  Van Ginneken M.  Hibiya Y.  Hobin K.  Grigoryan R.  Greenwood R. C.  Van Maldeghem F.  Chernonozhkin S. M.  Vanhaecke F.  Debaille V.  Claeys Ph.

CR-Type Chondrite for Airburst Event Over East Antarctica 430 ka Ago [#6223]
Petrographic, geochemical, and isotopic data refine the extraterrestrial nature of particular spherical and spherulitic particles recovered from sedimentary deposits near Walnumfjellet in the Sør Rondane Mountains, East Antarctica.

Losiak A.  Jõeleht A.  Plado J.  Sarv K.

Ilumetsa Potential Impact Structure as an Odessa-Type Crater [#6242]
A trench dug within the inner slope of Ilumetsa Large crater includes: 1) target rocks inclined towards the crater centre, 2) truncated layers, 3) atypically thickened segments and, 4) intrusions of Quaternary material into Devonian rocks.

Schmieder M.  Buchner E.  Sach V. J.

How Old is the Steinheim Impact Crater (Germany)? [#6072]
The Steinheim impact appears to postdate the Ries event by several kyr. While the Ries impact has a precise Ar-Ar age of ~14.81 Ma, the current best-estimate age for the Steinheim impact of 14.3–14.0 Ma is derived from biostratigraphic constraints.

 

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Wednesday, August 17, 2022

PRESOLAR GRAINS

8:30 a.m.   Boisdale

This session contains talks about the latest analytical, experimental and modeling results on presolar grains, stellar nucleosynthesis and galactic chemical evolution.

Chairs:  Brad Meyer and Ishita Pal

Times

Authors (*Presenter)

Abstract Title and Summary

8:30 a.m.

Yamamoto D. *  Tachibana S.  Takigawa A.

Survivability of Presolar SiC Grains in the Protosolar Disk: An Experimental Study of Evaporation Kinetics of SiC in the Low Pressure-H2-H2O Gas Mixture [#6273]
Evaporation experiments of SiC in the low pressure-H2-H2O gas mixture showed that presolar SiC grains could survive at temperatures lower than ~800 °C during the disk lifetime. SiC could survive more efficiently than presolar silicates in the disk.

8:45 a.m.

Bernal J. J. *  Zega T. J.  Ziurys L. M.

Experimental Insights into the Formation of Fullerenes and Carbon Nanotubes in Interstellar Space [#6007]
We will discuss the in-situ microelectromechanical (MEMS) heating and thermal decomposition of analog presolar grain-sized silicon carbide (SiC), as well as its implications on the formation of interstellar fullerenes and carbon nanotubes.

9:00 a.m.

Pal I. *  Jadhav M.  Savina M. R.  Shulaker D. Z.  Dory C. J.  Gyngrad F.  Kita N.  Amari S.

P-Nuclide Enrichments in Presolar Graphite Grains [#6529]
We report the detection of p-nuclide enrichments of Sr and Mo isotopes in high density presolar graphite grains from Murchison.

9:15 a.m.

Hoppe P. *  Pignatari M.  Amari S.

Silicon Carbide X Grains with very High 26Al/27Al Ratios: New Constraints for Supernova Models [#6036]
We present C, N, Si, and Mg-Al isotope data of 6 SiC X grains. Inferred initial 26Al/27Al ratios are between 0.60 and 0.78 which is at the upper end of whole-grain data from the literature. The isotope data are well matched by H-ingestion SN models.

9:30 a.m.

Liu N. *  Stephan T.  Cristallo S.  Vescovi D.  Gallino R.  Nittler L. R.  Alexander C. M. O’D.  Davis A. M.

Presolar Silicon Carbide Grains of Types Y and Z: Stardust from Low-metallicity Asymptotic Giant Branch Stars? [#6375]
We provide the first piece of evidence that Y and Z grains show heavy-element isotopic compositions different than MS grains, namely higher 88Sr/*87|Sr and 138Ba/136Ba ratios, which support their proposed low-metallicity stellar origins.

9”45 a.m.

Leitner J. *  Hoppe P.

The Search for Trace Elements in Presolar Silicate Grains [#6252]
We report on the search for heavy trace elements in a large presolar silicate. The elements Sr, Zr, and Ce were identified within the grain, potentially pointing towards co-condensation with titanium oxide phases.

10:00 a.m.

Meyer B. S. *  Bermingham K. R.

Galactic Evolution of NRLEE Dust [#6522]
Dust strongly enrichmented in calcium-48, titanium-50, and chromium-54 can condense in outflows from NRLEEs. Simple models of dust evolution in the Galaxy suggest this dust could give rise to observed isotopic anomalies in bulk meteorite samples.

10:15 a.m.

Hartogh J.  Petö M. *  Lawson T.  Sieverding A.  Brinkman H.  Pignatari M.  Lugaro M.

Comparison Between Core-Collapse Supernova Nucleosynthesis and Meteoritic Stardust Grains: Investigating Mg, Al, and Cr Isotopes [#6318]
We investigate whether core-collapse supernova can be the site of origin for presolar chromium-oxide grains.

10:30 a.m.

 

Break

 

Wednesday, August 17, 2022

SPECIAL SESSION: RECOVERY OF FRESHLY FALLEN METEORITES

8:45 a.m.   Alsh

This session describes recent meteorite falls and advances in the methods used to recover them.

Chairs:  Agata Krzesinska and Aine O’Brien

Times

Authors (*Presenter)

Abstract Title and Summary

8:45 a.m.

Zanda B. *  Steinhausser A.  Colas F.  Bouley S.  Lewin E.  FRIPON and Vigie-Ciel Teams

Vigie-Ciel, a Citizen Science Project about Meteors, Meteorites and Craters [#6208]
Vigie-Ciel is a citizen science project designed in France to invite the general public to contribute to the study of the flow, origin and nature of extraterrestrial materials that reach the Earth’s surface by helping to recover meteorites.

9:00 a.m.

O’Brien A. C. *  King A. J.  Bays C. L.  Daly L.  Rowe J.  Joy K.  Gater W.  Campbell-Burns P.  Kacerek R.  Christou A.  Collins G.  Horák J.  McIntyre M.  McMullan S.  Smedley A.

The UK Fireball Alliance: Lessons Learned from Two Meteorite Field Searches in the UK [#6299]
Two fireball Searches. / One a success, one not yet! / Much we have learned.

9:15 a.m.

King A. J. *  Daly L.  Joy K. H.  Bates H. C.  Bryson J. F. J.  Chan Q. H. S.  Clay P. L.  Devillepoix H. A. R.  Greenwood R. C.  Russell S. S.  Suttle M. D.

The Fall, Recovery, and Initial Analysis of the Winchcombe CM Chondrite [#6443]
We summarise the results of a consortium study of the Winchcombe CM chondrite fall.

9:30 a.m.

Welzenbach L. C. *  Fries M. D.  Cooke W. J.  Moser D.  Hicks S.  Rassmussen E.  Satterwhite C. E.  Righter K.  Sheikh D.  Ruzicka A. M.  Hutson M. L.  Vargas R.  Stream M.  Eckley S. A.  Zeigler R. A.  McCubbin F. M.

Rapid Recovery of a New Chondrite Meteorite near Natchez, Mississippi [#6361]
A daytime bolide terminated near Natchez, MS, April 27, 2022. Doppler weather radar and dark flight modeling within 48 hours enabled the rapid recovery of meteorites prior to rain. The recovery sites are within the calculated strewnfield map.

9:45 a.m.

Chennaoui Aoudjehane H. *  Agee C. B.  Aoudjehane M.  Zennouri L.

Tiglit: Aubrite Meteorite Fall in Morocco on December 2021 [#6352]
Tiglit is an aubrite eyewitnessed fall on Earth in the South of Morocco on December 9th, 2021. It’s a small meteorite up to 2,2 kg. The first pieces were collected the day after the fall. Here we descript the fieldwork and the primary classification.

10:00 a.m.

Anderson S. L. *  Towner M. C.  Fairweather J.  Bland P. A.  Devillepoix H. A. R.  Sansom E. K.  Benedix G. K.  Cupak M.

Successful Recovery of an Orbital Meteorite Using Drones and Machine Learning [#6519]
We find meteorites using drones and machine learning.

10:15 a.m.

Devillepoix H. A. R. *  Towner M. C.  Sansom E. K.  Cupak M.

Sources of Uncertainties in Dark Flight Analyses [#6397]
With fireball trajectories often precise to <100m, why is it not possible to get the same precision on meteorite fall positions? In this talk we explore where meteorite dark flight uncertainties comes from, and how they are dealt with.

10:30 a.m.

 

Break

 

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Wednesday, August 17, 2022

CURATION, EDUCATION AND OUTREACH

10:35 a.m.   Alsh

This session covers a variety of presentations concerning the physical and digital curation of meteorites and samples returned from exploration missions to the Moon and asteroids.

Chairs:  Ryan Zeigler and Natasha Almeida

Times

Authors (*Presenter)

Abstract Title and Summary

10:35 a.m.

Zeigler R. A. *  Eckley S. A.  Edey D.  Ketcham R. A.  Hanna R. D.  Gross J.  McCubbin F. M.  Shearer C. K.  ANGSA Science Team

X-Ray Computed Tomography During Preliminary Examination of Apollo Drive Tube 73001 [#6504]
X-ray Computed Tomography plays an increasingly important role in many aspects of the curation of astromaterials samples.

10:50 a.m.

Kent J. J. *  Zeigler R. A.  Mitchell J. L.  Amick C. L.  Lewis E. K.  Gross J.  McCubbin F. M.  Mosie A. B.

Processing Frozen Apollo Samples in a Nitrogen Environment [#6497]
Apollo 17 lunar samples that have been kept frozen at -20C for nearly 50 years were selected for study. A new laboratory and procedures were developed and used to successfully process the samples for scientific allocations.

11:05 a.m.

Tunney L. D. *  Hill P. J. A.  Herd C. D. K.  Hilts R. W.  Regberg A. B.

Recovery and Contamination Mitigation of Meteorites: Implications for Advanced Curation Methods [#6372]
Here, we summarize the best practices for preserving meteorites in their most pristine states possible, based on recent studies of freshly fallen meteorites, and laboratory materials and components.

11:20 a.m.

Arif S. *  Chennaoui Aoudjehane H.

Conception of a Model of Natural History Museum of Casablanca (Morocco) [#6150]
Science museums play a very important role in the development of natural history research and in the dissemination of scientific culture, both nationally and internationally.

11:35 a.m.

Lehnert K. A. *  Ji P.  Mays J.  Profeta L.  Figueroa J. D.  Johansson A.  Morrison S.

The Astromaterials Data System: Enabling Open and FAIR Astromaterials Samples Data [#6518]
The Astromaterials Data System is funded by NASA to curate, archive, and publish data generated by the analysis of astromaterial samples collected by NASA missions. Astromat’s services enable FAIR data in compliance with NASA and publishers policies.

11:50 p.m.

Hezel D. C. *  Lehnert K. A.

The Future of Cosmochemical Databases: MetBase and the Astromaterials Data System (ASTROMAT) Started a Common Future [#6409]
MetBase and Astromaterials are two of the largest meteorite and planetary materials databases worldwide. We started a project that will in its first part align MetBase with Astromaterials, and in the second part merge MetBase with Astromaterials.

12:05 p.m.

Bennett C. A. *  Haenecour P.  Lehnert K. A.  Richard S.

Achieving Long-Term Data Archiving Goals for OSIRIS-REx Sample Analysis Through Coordinated Efforts with AstroMat [#6498]
The OSIRIS-REx team is updating the mission’s data management plan to include a path forward for sample analysis data archiving in coordination with the Astromaterials Data System (AstroMat).

 

Wednesday, August 17, 2022

CHONDRULES

10:35 a.m.   Boisdale

Talks in this session investigate the formation conditions of chondrules, and the nature of the chondrule heating event.

Chairs:  Dominik Hezel and John Bigolski

Times

Authors (*Presenter)

Abstract Title and Summary

10:35 a.m.

Cashion M. D. *  Johnson B. C.  Deienno R.  Walsh K. J.  Krot A. N.

Chondrules as Byproducts of Giant Planet Formation [#6171]
We investigate impact jetting as a mechanism for chondrule formation in the outer solar system. Preliminary simulations of giant planet core formation and partially icy impacts suggest jetting could form up to 10^22 kg of chondrules.

10:50 a.m.

Piralla M. *  Villeneuve V.  Jacquet E.  Marrocchi Y.

Chondrule Formation in Ordinary Chondrites: Insight from Oxygen Isotopes [#6055]
Chondrules are one of the most abundant objects that formed in the early solar system. Based on O isotopes and analysing chondrules from ordinary chondrites, we have shown that chondrule formation mechanisms are the same throughout the disk.

11:05 a.m.

Greenwood J. P. *  Herbst W.

Experimental Reproduction of Aluminum and Titanium Zoning in Olivine: A New Method for Constraining Chondrule Thermal Histories [#6218]
Minor element zonation in olivine is a result of igneous crystallization from supersaturated melts cooled at high cooling rates.

11:20 a.m.

Neukampf J. *  Marrocchi Y.  Villeneuve J.  Roskosz M.

Coupling Fe-Mg Interdiffusion in Type II Chondrule Olivine with Mg and Li Isotopes to Unravel Early Solar System Processes [#6032]
Combining δ7Li and δ26Mg composition in type II chondrule olivine grains suggest that relict grains have a different origin compared to fayalitic overgrowth stemming from different reservoirs in the solar system or heterogeneities within a reservoir.

11:35 p.m.

Baker E. *  Jones R. H.  Villeneuve J.

Halogen Evolution in the Early Solar System: Diffusion of Halogens During Chondrule Formation [#6354]
We present new EPMA and SIMS data from a suite of Enstatite Chondrite Chondrules. We analysed Chondrule glass for F, Cl, Br and S; and find Cl and Br have edge-to-centre concentration gradients. We also find a Superchondritic Br/Cl ratio.

11:50 p.m.

Jacquet E. *

All Chondrules are Compound [#6005]
Texture and trace element properties of lobate chondrules in CO chondrules indicate they are compound, as may apply to many nonspherical chondrules in other groups. Such chondrules inform about chondrule populations produced in single events.

12:05 p.m.

Bigolski J. N. *  Weisberg M. K.  Ebel D. S.

Chondrules and Their Fine-Grained Rims Within Unequilibrated Ordinary Chondrites: Nebular vs. Parent Body Processing [#6413]
Deformation of fine-grained rims are seen in UOCs, with growing evidence in other primitive meteorite groups. We examine pre- and post-accretionary processes that imprinted upon chondrules and associated fine-grained rims.

 

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Thursday, August 18, 2022

MARS

9:00 a.m.   Alsh

New results about evolution of Mars from meteorites and Mars2020 mission.

Chairs:  Chris Herd and Leanne Staddon

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Herd C. D. K. *  Benison K. C.  Bosak T.  Cohen B. A.  Czaja A. D.  Debaille V.  Hausrath E. M.  Hickman-Lewis K.  Mayhew L. E.  Sephton M. A.  Shuster D. L.  Siljeström S.  Simon J. I.  Weiss B. P.  Zorzano M.-P.  Wadhwa M.  Hand K. P.  Sun V. Z.  McLennan S. M.  Stack K. M.  Farley K. A.

Documenting Sampling by the NASA Perseverance Mission: In Support of Mars Sample Return [#6328]
We describe how samples collected by the NASA Perseverance Rover Mission are characterized and documented, and the data products available for the community, in support of Mars Sample Return.

9:15 a.m.

Udry A. *  Ostwald A.  Sautter V.  Cousin A.  Wiens R. C.  Forni O.  Benzerara K.  Beyssac O.  Nachon M.  Dromart G.  Quantin C.  Mandon L.  Clavé E.  Pinet P.  Ollila A.  Bosak T.  Mangold N.  Dehouck E.  Johnson J.  Schmidt M.  Horgan B.  Gabriel T.  McLennan S.  Maurice S.  Simon J. I.  Herd C. D. K.  Madiaraga J. M.  Brown A.  Connell S.  Flannery D.  Tosca N.  Cohen B.  Liu Y.  McCubbin F. M.  Cloutis E.  Fouchet T.  Royer C.  Alwmark S.  Sharma S.  Anderson R.  Pilleri P.

A Comparison of the Igneous Máaz Formation at Jezero Crater with Martian Meteorites [#6089]
The igneous rocks analyzed in the Maaz formation in the Jezero crater by the Mars2020 Perseverance show some striking similarities with martian meteorites, including some compositions not observed at the martian surface before.

9:30 a.m.

Cohen B. A. *  Benison K. C.  Bosak T.  Czaja A. D.  Debaille V.  Hausrath E. M.  Herd C. D. K.  Hickman-Lewis K.  Mayhew L. E.  Sephton M. A.  Shuster D. L.  Siljeström S.  Simon J. I.  Weiss B. P.  Zorzano M.-P.  Wadhwa M.  Hand K. P.  Sun V. Z.  Stack K. M.  Farley K. A.

The Jezero Crater Floor Sample Suite Collected by the Mars 2020 Perseverance Rover [#6365]
Perseverance has collected eight rock samples from two Jezero Crater units with distinct igneous origins and weathering histories. When returned, this sample suite will address several important objectives of the Mars Sample Return campaign.

9:45 a.m.

Treiman A. H. *  Liu Yang.  Tice M. M.  Schmidt M. E.  Kizovski T. V.  Hurowitz J. A.  Allwood A. C.  Henneke J.  Peterseon D. A. K.  VanBommel S. J.  Jones M. W. M.  Knight A. L.  Orenstein B. J.  Clark B. C.

The Brac Olivine Cumulate Rock (Jezero Crater, Mars) Compared to Martian Meteorites [#6387]
A Jezero rock / Is like cumulate martians / But is much older.

10:00 a.m.

Meyer L. A. E. *  Morino P.  Allaz J.  Liebske C.  Schmidt M. W.  Schönbächler M.

The Timescales of Early Silicate Reservoir Formation on Mars [#6385]
We determined new partition coefficients for Mn and Cr based on melt experiments representing lunar and deep martian magma composition and modeled the timing of the martian magma ocean using the Mn-Cr decay system.

10:15 a.m.

Suarez S. E. *  Lapen T. J.  Righter M.  Irving A. J.

Overview of Shergottite Lithologies Ejected From Mars at 1.1 Ma [#6523]
A closer look at 13 depleted shergottites, with crystallization ages spanning 0.347 to 2.4 Ga, and a shared 1.1 Ma ejection age.

10:30 a.m.

Sheen A. I. *  Herd C. D. K.  Staddon L. G.  Darling J. R.  Schwarz W. H.

In-Situ Geochronology of Enriched Basaltic Shergottites Jiddat al Harasis (JaH) 479, Northwest Africa (NWA) 10299, and NWA 12919: The Relationship Between Baddeleyite Microstructures and U-Pb Isotope Systematics [#6492]
Baddeleyite microstructures and isotope systematics suggest minimal Pb isotope diffusion across grain boundaries during ejection from Mars. Three new U-Pb igneous ages provide additional constraints on potential petrogenetic links among shergottites.

10:45 a.m.

Darling J. R. *  Staddon L. G.  Tait K. T.  Schwarz W. H.  Sheen A. I.  Herd C. D. K.  Stephen N.  Martin S.  Dunlop J.

Accessory Mineral U-Th-Pb Chronology of Late Amazonian Magmatism Recorded by Enriched Shergottites [#6360]
We combine new U-Th-Pb chronology of accessory minerals in enriched shergottites with other recent results to further refine the understanding of late Amazonian magmatism on Mars.

11:00 a.m.

Lindner M. *  Hezel D. C.  Gerdes A.  Marschall H. R.  Brenker F. E.

Age of Enriched Gabbroic Shergottite Northwest Africa 6963 and its Si-Rich Mesostasis [#6137]
We date late-stage magmatic merillite and minerals of Si-rich mesostasis in NWA 6963 using LA-MC-ICP-MS. The ages provide a crystallization age for NWA 6963 and can be used to address the question of Si-rich mesostasis formation - impact or magmatic?

11:15 a.m.

O’Neal E. W. *  Ostwald A. M.  Udry A.  Gross J.  Righter M.  McQuaig D. R.  Lapen T. J.  Howarth G. H.  Johnsen R.

The Evolution of Poikilitic Shergottite Magmas from Mantle to Crust [#6178]
Poikilitic shergottites likely represent a major lithology of the martian crust, making them vital to the understanding of martian magmatism and geological history. Here we examine a suite of 5 poikilitic shergottites both chemically and isotopically.

11:30 a.m.

Staddon L. G. *  Darling J. R.  Righter M.  Lapen T. J.  Dunlop J.  Stephen N. R.

Petrogenesis and Isotope Systematics of Augite-rich Martian Meteorite Northwest Africa (NWA) 13467 [#6455]
We report petrological and isotopic data on martian meteorite Northwest Africa (NWA) 13467, a new augite-rich basalt.

11:45 a.m.

Peel C. J. *  Howarth G. H.  Alard O.  Foley S. F.  Veter M.  Udry A.

Ultra Trace Element Concentrations of Olivine in Olivine-Phyric Shergottites and Chassignite-Nahklite Meteorites [#6222]
The trace element concentrations of olivine in olivine-phyric shergottites and chassignite-nahklite meteorites is studied to assess whether olivine is in equilibrium with bulk-rock REE concentrations.

12:00 p.m.

Ostwald A. M. *  Udry A.  Day J. M. D.  Gross J.

Chemical Heterogeneities Among Melt Compositions Hosted in Melt Inclusions in Nakhlites and Chassignites [#6124]
Major, minor, and trace element variability in melt inclusions hosted in nakhlite and chassignite cumulus phases may preserve evidence for reequilibration of the host minerals in changing magma conditions.

12:15 p.m.

Malarewicz V. *  Zanda B.  Beyssac O.  Hewins R.  Rubatto D.  Marin-Carbonne J.  Leroux H.  Pont S.  Bernard S.  Bouley S.

Revisiting Accessory Minerals in the Martian Regolith Breccia Northwest Africa 7533 [#6412]
The unique martian regolith breccia Northwest Africa 7533 gives rare insights to the primitive crust. Through the methodic study of zircon and phosphates, we gained new details on their structural characteristics and information for early mechanisms.

 

Thursday, August 18, 2022

CARBONACEOUS CHONDRITES II

9:00 a.m.   Boisdale

CMs, COs and many details on alteration and heating within them

Chairs:  Pierre Haenecour and Martin Suttle

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Azevedo-Vannson S. *  Remusat L.  Piani L.  Danoix F.  Leroux H.  Bernard S.  Viennet J. C.  Pont S.  Danoix R.  Verdier-Paoletti M.  Hewins R.  Roskosz M.

Olivine of Carbonaceous Chondrites and Reservoir of Nebular Hydrogen [#6339]
Ion and atom probes reveal high H content in olivine of CM chondrites. D/H tends to homogeneity with increasing degree of aqueous alteration. Isotopic heterogeneities in Paris and Mg-rich olivine in Aguas Zarcas is likely a pre-accretion heritage.

9:15 a.m.

Sridhar S. *  Ryan J.  King A. J.  Bates H. C.  Nichols C. I. O.  Harrison R. J.  Bryson J. F. J.

Unravelling the Thermal and Aqueous Alteration Histories of Carbonaceous Chondrites Using Magnetic Mineralogy [#6138]
Bulk magnetic measurements combined with PCA can investigate the formation, breakdown, and modification of several magnetic minerals during thermal and aqueous alteration of carbonaceous chondrites, giving unique insight into these processes.

9:30 a.m.

Flynn G. J. *  Wirick S.  Northrup P.

Phosphorus Speciation in Hydrous Carbonaceous Meteorites: Indications of the Degree of Oxidation During Hydrothermal Processing [#6290]
Results suggest P was incorporated into parent bodies as phosphide, and aqueous processing was most effective at oxidizing this to phosphate in Murchison, with a lesser degree of oxidation in Aguas Zarcas, and the least degree of oxidation in Tarda.

9:45 a.m.

Smith L. R. *  Haenecour P. H.  Barnes J. J.  Domanik K.  Neuman M.  Wang K.  Ogliore R.

Phosphide-Rich Clasts in the C2-Ungrouped Tarda Meteorite [#6406]
We have identified several phosphide-rich clasts in the C2-ungrouped Tarda meteorite. Through coordinated in-situ analyses (EPMA, FIB-SEM, TEM), the clasts are observed to contain laths of the rare phosphide andreyivanovite (FeCrP) set in serpentine.

10:00 a.m.

Clog M. D. *  Lindgren P.  Lee M. R.  Modestou S.

Temperatures of Carbonate Formation in CM Carbonaceous Chondrites: New Constraints from Clumped Isotope Thermometry [#6261]
We report clumped isotopes and Δ17O of carbonate phases in 3 chondrites (Murchison, Cold Bokkeveld and Allan Hills). More altered meteorites had higher TΔ47 (from 20 to 125°C) and lower Δ17O, consistent with progressive heating and isotope exchange.

10:15 a.m.

Jenkins L. E. *  Lee M. R.  Daly L.  King A. J.  Thompson S. P.

Experimental Constraints for Impact Induced Post-Hydration Heating on C-Complex Asteroids [#6122]
XRD reveals / The temperatures at which / Phase changes occur.

10:30 a.m.

Yesiltas M. *  Glotch T. D.  Yamaguchi A.

Thermal Metamorphic History of Low-Temperature Carbonaceous Chondrites [#6158]
Various CM2 and ungrouped C2 chondrites are studied with Raman spectroscopy to understand their thermal metamorphic histories.

10:45 a.m.

Harrison C. S. *  King A. J.  Jones R. H.  Suttle M. D.  Bartoschewitz R.

Thermal Metamorphism of CM Chondrites: Insights from Fe-Sulfide Grains [#6293]
We systematically characterize the composition and morphology of coarse (>10 µm) Fe-sulfide grains within the matrices of three dehydrated CM chondrites to constrain the timescales of metamorphism and infer the thermal history of their parent body.

11:00 a.m.

Eckart L. M. *  Mertens C. A. K.  Busemann H.  Maden C.  Righter K.  Alexander C. M. O’D.

CO Chondrite Parent Body Processing as Recorded by Noble Gases [#6349]
We investigated the noble gas content of a large set of CO chondrites, of which some experienced mild thermal alteration. We found correlations between trapped gas concentrations and metamorphic grade, determined exposure ages and potential pairing.

11:15 a.m.

Haenecour P. *  Maisano J.  Hanna R. D.  Smith L. R.  Barnes J. J.

Correlated Two- and Three-Dimensional Mineralogy and Petrography of the C3.00-Ungrouped Chwichiya 002 AND C2- Ungrouped Tarda Carbonaceous Chondrites [#6425]
We report initial results from our ongoing project to correlate 3D observations from micro-X-ray computed tomography (μXCT) of carbonaceous chondrites with detailed 2D electron and energy dispersive X-ray spectroscopy (EDS) mapping.

11:30 a.m.

Prestgard T. J. *  Bonal L.  Gattacceca J.  Sonzogni C.  Beck P.

Exploring the Connection Between CM-CO Clan Chondrites Through Anomalous and Misclassified Members [#6184]
We combine petrographic, geochemical and spectroscopic analysis of eight unusual (or misclassified) CM-CO clan chondrites in order to discuss their classification, secondary history, and genetic relationship between one another.

11:45 a.m.

Takir D. *  Howard K. T.  Stockstill-Cahill K. R.  Hibbitts C. A.  Abreu N.  Fries M.  Zolensky M. E.

Spectral and Mineral Analysis of the Carbonaceous Chondrite Aguas Zarcas in Search of its Parent Body [#6291]
We present spectroscopic and PSD-XRD analyses of a sample of the carbonaceous chondrite Aguas Zarcas to better understand the origin and parent body for this meteorite.

12:00 p.m.

Suttle M. D. *  Daly L.  Jones R. H.  Jenkins L.  Van Ginneken M.  Mitchell J. T.  Bridges J. C.  Hicks L. J.  Johnson D.  Rollinson G.  Taylor R.  Genge M. J.  Schröder C.  Bonsall E.  Salge T.  Heard R.  Findlay R.  King A. J.  Bates H. C.  Lee M. R.  Stephen N. R.  Willcocks F. M.  Greenwood R. C.  Franchi I. A.  Russell S. S.  Harrison C. S.  Schofield P. F.  Almeida N. V.  Floyd C.  Martin P-E.  Joy K. H.  Wozniakiewicz P. J.  Hallatt D.  Burchell M. J.  Alesbrook L. S.  Spathis V.  Cornwell L. C.  Dignam A.

Geological History of the Winchcombe Meteorite — A New CM Chondrite Fall [#6076]
Consortium study on the new CM fall Winchcombe: coarse-grained team’s output: lithological diversity, aqueous alteration, brecciation and re-accretion.

12:15 p.m.

Daly L. *  Suttle M. D.  Lee M. R.  Bridges J.  Hicks L.  Martin P-E.  Floyd C. J.  Jenkins L.  Salge T.  King A. J.  Almedia N. V.  Johnson D.  Trimby P.  Mansour H.  Wadsworth F.  Rollison G.  Genge M. J.  Darling J.  Bagot P.  White L. F.  Stephens N.  Mitchell J. T.  Jones R.  Piazolo S.  Einsle J. F.  Macente A.  Hallis L. J.  Schofield P. F.  Russel S. S.  Bates H.  Smith C.  Franchi I.  Forman L. V.  Bland P. A.  Westmoreland D.  Anderson I.  Taylor R.  Montgomery M.  Parsons M.  Vasseur J.  Fireball Alliance U. K.

A Coordinated Approach to Investigate the Heterogeneity of Aqueous Alteration at the Micro-Scale in the Winchcombe Meteorite, a CM Fall [#6262]
Winchcombe CM Fall. / Nano-scale surprised us all. / Localised changes.

 

Thursday, August 18, 2022

METEORITICAL SOCIETY BUSINESS MEETING

12:45 P.m.   Boisdale

Chair:  Brigitte Zanda

 

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Thursday, August 18, 2022

IMPACTS III: A SCOTTISH IMPACTITE AND RECENT DEVELOPMENTS IN MODELLING

2:00 p.m.   Alsh

A six-talk mini-session. All impact sessions at this conference are dedicated to the memory of Jay Melosh.

Chairs:  Gareth Collins and Sanna Alwmark

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Osinski G. R. *  Ferrière L.  Hill P. J. A.  Prave A. R.  Preston L. J.  Singleton A.  Pickersgill A. E.

The Stac Fada Member, Northwest Scotland: An Impact Origin but with a Twist [#6066]
The Stac Fada Member is not a primary impact ejecta deposit but was instead formed via melt-fuel-coolant interaction and deposited beyond the extent of the continuous ejecta blanket as high-energy ground-hugging sediment gravity flows.

2:15 p.m.

Simms M. J. *

Lateral Variation in the Stac Fada Impact Ejecta Deposit, NW Scotland: Clues to Crater Location, Size, and Ejecta Emplacement Processes [#6444]
New observations of the Stac Fada Member (Scotland) reveal subtle lateral variations that provide clues to the nature of this orphaned (no crater has yet been positively identified) ejecta blanket.

2:30 p.m.

Collins G. S. *

In Memoriam Jay Melosh — An Appreciation

2:45 p.m.

Luther R. *  Schmalen A.  Artemieva N.

Campo del Cielo Strewn Field: Modelling the Formation of Impact Funnels [#6192]
We discuss the conditions that are required for the formation of funnels for the Campo del Cielo strewn field: impact angle, velocity, and target conditions. Funnels do not form below a critical angle.

3:00 p.m.

Röhlen R. *  Wünnemann K.  Allibert L.  Manske L.  Maas C.  Hansen U.

Core or Mantle? Breakup of Asteroid Cores During Impact in the Late Accretion Phase [#6440]
We study the fragmentation of iron cores of differentiated impactors during impact into a magma ocean using improved numerical models. We analyze how differences in the model setup, like impact velocity etc. change the fragmentation behavior.

3:15 p.m.

Davison T. M. *  Baijal N.  Collins G. S.

High-Resolution Oblique Impact Simulations of the Formation of the South Pole-Aitken Basin [#6362]
We ran high-resolution, multi-material 3D oblique impact simulations of SPA formation. The spatial distribution of ejecta, depth of excavated mantle and mass of ejected projectile are all dependent on impact angle, velocity and lunar thermal profile.

3:30 p.m.

 

Break

 

Thursday, August 18, 2022

SPECIAL SESSION: SAMPLES AND OBSERVATIONS OF RYUGU, BENNU, AND PSYCHE II

2:00 p.m.   Boisdale

This session covers science from returned sample analysis and spacecraft observation of solar system small bodies.

Chairs:  Br. Guy Consolmagno and Marina Gemma

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Consolmagno G. J. *  Opeil C. P.  Noyes C. S.  Macke R. J.  Britt D. T.

Iron Meteorite Thermal Inertias: Implications for 16 Psyche [#6115]
We measured the densities, thermal conductivities, and heat capacities of four iron meteorites between 5-300 K and calculated their thermal inertia. These data can help us understand the remotely sensed thermal inertia data of 16 Psyche.

2:15 p.m.

Gemma M. E. *  Shirley K. A.  Glotch T. D.  Ebel D. S.

Effects of Metal Fraction, Petrologic Type, Temperature, and Particle Size on VNIR Spectra of Ordinary Chondrite Meteorites [#6482]
We present VNIR spectral measurements of well-characterized ordinary chondrite meteorite samples taken under simulated asteroid surface conditions at a range of temperatures and particle sizes relevant to near-Earth asteroid surfaces.

2:30 p.m.

Hamilton V. E. *  Kaplan H. H.  Connolly H. C. Jr.  Goodrich C. A.  Abreu N. M.  Simon A. A.

Is Bennu a CR Chondrite? GRO 95577 (CR1) as a Spectral/Mineralogical Analogue [#6094]
We show spectral evidence that Grosvenor Mountains (GRO) 95577, the only currently known CR1, is the best spectral analogue yet for Bennu; the sample returned by OSIRIS-REx may represent a remarkable opportunity to study in depth a unique material.

2:45 p.m.

Amano K. *  Matsuoka M.  Nakamura T.  Kagawa E.  Fujioka Y.  Potin S. M.  Hiroi T.  Tatsumi E.  Milliken R. E.  Brunetto R.  Beck P.  Takahashi Y.  Kawai T.  Yamashita S.  Uesugi M.  Morita T.  Kikuiri M.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Visible-IR Spectroscopic Diversity of Ryugu Coarse Grains and Comparison to Spectral Properties of Carbonaceous Chondrites [#6166]
We performed reflectance spectroscopy of mm-sized grains collected from C-type asteroid Ryugu to investigate spectral diversity among the samples. The similarities and the differences between Ryugu samples and carbonaceous chondrites are discussed.

3:00 p.m.

Noguchi T. *  Matsumoto T.  Miyake A.  Igami Y.  Haruta M.  Saito H.  Hata S.  Seto Y.  Miyahara M.  Tomioka N.  Ishii H. A.  Bradley J. P.  Ohtaki K.  Dobricǎ E.  Leroux H.  LeGuillou C.  Jacob D.  de la Peña F.  Laforet S.  Marinova M.  Langenhorst F.  Harries D.  Beck P.  Phan T. H. V.  Rebois R.  Abreu N. M.  Gray J.  Zega T.  Zanetta P-M.  Thompson M. S.  Stroud R.  Burgess K.  Cymes B. A.  Bridges J. C.  Hicks L.  Lee M. R.  Daly L.  Bland P. A.  Smith W.  McFadzean S.  Martin P-E.  Bagot P. A. J.  Fougerouse D.  Saxey D. W.  Reddy S.  Rickard W. D. A.  Zolensky M. E.  Frank D. R.  Martinez J.  Tsuchiyama A.  Yasutake M.  Matsuno J.  Okumura S.  Mitsukawa I.  Uesugi K.  Uesugi M.  Takeuchi A.  Sun M.  Enju S.  Takigawa A.  Michikami T.  Nakamura T.  Matsumoto M.  Nakauchi Y.  Yurimoto H.  Nagashima K.  Kawasaki N.  Sakamoto N.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Dehydration Decomposition of Phyllosilicates in the C-Type Asteroid Ryugu Material by Space Weathering [#6170]
The physical processes that cause space weathering on Ryugu are identical to those on the Moon and the S-type asteroid Itokawa. However, the results are substantially different from space weathering of these anhydrous airless bodies.

3:15 p.m.

Harries D. *  Langenhorst F.  Matsumoto T.  Noguchi T.  Yurimoto H.  Nakamura T.  Yabuta H.  Naraoka H.  Okazaki R.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Incipient Space Weathering on 162173 Ryugu Recorded by Crystallographic Changes of Pyrrhotite [#6073]
Pyrrhotite recovered from the surface of Ryugu suggests early sulfur loss through space exposure well before phyllosilicates are affected and could serve to assess time scales of incipient space weathering.

3:30 p.m.

 

Break

3:35 p.m.

Bridges J. C. *  Hicks L. J.  Noguchi T.  Miyake A.  Yurimoto H.  Nakamura T.  Yabuta H.  Naraoka H.  Okazaki R.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Melt Zones in Ryugu Surface Samples: XANES and STEM-EELS Characterisation of Space Weathering [#6189]
A serpentine-rich assemblage in Chamber A grains from Hayabusa2 have d-spacings 0.75–0.78 nm and 100(Si+Al/Mg+Fe) 48–60%, Fe3+/ΣFe 20–50%. In places this assemblage has melted, showing the importance of bombardment in the surface properties of Ryugu.

3:50 p.m.

Brenker F. E. *  Bazi B.  DePauw E.  Di Michiel M.  Falkenberg G.  Garrevoet J.  Lindner M.  Nakamura T.  Tack P.  Tkalcec B.  Vekemans B.  Uesugi M.  Matsumoto M.  Nakashima D.  Fujioka Y.  Morita T.  Kikuiri M.  Amano K.  Kagawa E.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.-il.  Tsuda Y.  Vincze L.

Synchrotron Based Trace Element Analyses of a Magnetite Vein Cross Cutting a mm-Sized Ryugu Rock Fragment [#6169]
The detailed SXRF study of mm-sized Ryugu rock fragments enabled the identification and localization of a unique magnetite-apatite vein. Veins crosscutting the sample material are compelling evidence for intense hydrous alteration.

4:05 p.m.

Dobricǎ E. *  Ishii H. A.  Bradley J. P.  Ohtaki K.  Noguchi T.  Matsumoto T.  Brearley A. J.  Min-Pet Fine Sub-Team  Hayabusa2-Initial-Analysis Core

Nonequilibrium Spherulitic Magnetite in the Ryugu Samples [#6466]
In this new study, we focus on spherulitic magnetite grains in the Ryugu from chamber C to understand the evolution of the aqueous alteration processes on the carbonaceous (C-type) asteroids.

4:20 p.m.

Kikuiri M. *  Nakamura T.  Langenhorst F.  Pollok K.  Mikouchi T.  Yoshida H.  Nakashima D.  Zolensky M. E.  Uesugi M.  Yurimoto H.  Noguchi T.  Okazaki R.  Yabuta H.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Shock-Induced Deformation Recorded in the Regolith Particles from C-Type Asteroid Ryugu [#6199]
We investigated the shock deformation feature in 16 Ryugu returned samples of mm-size. We found no evidence from a catastrophic event, but found in one sample a set of subparallel fractures in phyllosilicates indicative of shock pressure > ~4GPa.

4:35 p.m.

Bejach L. *  Engrand C.  Dartois E.  Duprat J.  Mathurin J.  Dazzi A.  Deniset-Besseau A.  Rividi N.  Sandt C.  Borondics F.  Troadec D.  Nakamura T.  Morita T.  Kikuiri M.  Amano K.  Kagawa E.  Yabuta H.  Noguchi T.  Yurimoto H.  Okazaki R.  Naraoka H.  Sakamoto K.  Tachibana S.  Watanabe S.  Tsuda Y.

Comparison of Mimeralogical Composition of Asteroid Ryugu Samples Returned by the Hayabusa2 Mission and Antarctic Micrometeorites (AMMs) [#6090]
Micrometeorites, pristine dominant infalling on Earth, are compared to Ryugu samples, primitive Cb-type asteroid with organic matter. Mineralogy and composition enlighten on the primitive conditions of the solar system and degree of aqueous alteration.

4:50 p.m.

Yada T. *  Abe M.  Yogata K.  Miyazaki A.  Nagashima K.  Nakato A.  Hatakeda K.  Hitomi Y.  Sugiyama Y.  Nishimura M.  Sakamoto K.  Kanemaru R.  Kumagai K.  Soejima H.  Okada T.  Fukai R.  Ishizaki T.  Sugahara H.  Suzuki S.  Sugita S.  Cho Y.  Yumoto K.  Yabe Y.  Mori S.  Aikyo Y.  Furuichi K.  Bibring J.-P.  Pilorget C.  Brunetto R.  Riu L.  Loizeau D.  Lourit L.  Hamm V.  Lequertier G.  Carter J.  Pivert- Jolivet T. L.  Lantz C.  Tachibana S.  Usui T.  Fujimoto M.

Progress Report of Initial Description of Individual Ryugu Particles Returned by Hayabusa2 [#6323]
More than 400 of individual Ryugu particles have been described so far. Based on their database, the first announcement of opportunity for the samples was held and samples will be distributed to the selected principal investigators from this June.

5:05 p.m.

Le Pivert-Jolivet T. *  Brunetto R.  Pilorget C.  Bibring J.-P.  Nakato A.  Loizeau D.  Riu L.  Hamm V.  Lantz C.  Hatakeda K.  Yogata K.  Baklouti D.  Yada T.  Okada T.  Usui T.  Micromega IAS/ISAS Curation Team

Grain Scale Heterogeneities in Ryugu Samples as Observed by MicrOmega: A Key to Understand Aqueous Alteration and Space Weathering [#6255]
We will present spectral heterogeneities of Ryugu samples by studying the 2.72 µm OH feature of 177 grains extracted from chambers A (surface) and C (subsurface). This diversity is a key to understand aqueous alteration and space weathering.

5:20 p.m.

Ito M. *  Tomioka N.  Uesugi M.  Yamaguchi A.  Imae N.  Shirai N.  Ohigashi T.  Kimura M.  Liu M-C.  Greenwood R. C.  Uesugi K.  Nakato A.  Yogata K.  Yuzawa H.  Kodama Y.  Tsuchiyama A.  Yasutake M.  Findlay R.  Franchi I. A.  Malley J. A.  McCain K. A.  Matsuda N.  McKeegan K. D.  Hirahara K.  Takeuchi A.  Sekimoto S.  Sakurai I.  Okada I.  Karouji Y.  Yada T.  Abe M.  Usui T.  Watanabe S.  Tsuda Y.

One Year On! A Summary of the Analytical Work on Ryugu Particles Conducted by Phase2 Kochi Curation [#6175]
We summarize the first-year results of an integrated bulk and micro-analyses of Ryugu particles by the Phase2 Kochi to elucidate the nature, origin and history of asteroid Ryugu, and to investigate the similarities to known extraterrestrial samples.

 

Thursday, August 18, 2022

IMPACTS IV: A POTPOURRI OF IMPACT PROCESSES FROM PROJECTILE COMPONENTS TO POLYMICT BRECCIAS

3:35 p.m.   Alsh

An eight-talk mini-session. All impact sessions at this conference are dedicated to the memory of Jay Melosh.

Chairs:  Sarah Simpson and Christopher Hamann

Times

Authors (*Presenter)

Abstract Title and Summary

3:35 p.m.

Pickersgill A. E. *  Lee M. R.  Mark D. F.  Christou E.

What Do We Know About the Duration of Post-Impact Hydrothermal Activity? [#6395]
Impact, heat, water / How long does it stay so warm? / It’s hard to be sure.

3:50 p.m.

Trepmann C. A. *  Dellefant F.  Sleptsova L. V.  Gilder S. A.  Seybold L.  Hölzl S.

Polymict Breccias from the Ries Impact Structure — Deformation During Shock-Loading, -Unloading, Brecciation, Mixing and Emplacement [#6241]
Polymict breccias from the Ries comprising strongly shocked gneisses as well as weakly shocked sandstones and limestones without the presence of glass-fragments record mixing of basement and sedimentary cover rocks during impact cratering.

4:05 p.m.

Kletetschka G. *  Karimi K.  Takac M.

Acraman Crater Morphology from the Gravity Aspects [#6121]
Comparison of Acraman crater’s VD, Tzz and strike, with the same variables for typical lunar craters, Blazsko and Burg craters, indicates that it lacks comparable central uplifted signature seen in Blazsko crater.

4:20 p.m.

Singh A. K. *

An Experimental Approach to Effectively Separate a Projectile Component from Impactites [#6015]
In this study, an experimental method is proposed for the first time for effective separation of the impactor component from impactites. The successful application of this technique is reported from various impactite samples of the Lonar and Dhala impact structures, India.

4:35 p.m.

Rundhaug C. J. *  Schiller M.  Larsen K. K.  Deng Z.  Bermúdez H. D.  Amsellem E.  Bizzarro M.  Cui Y.

Projectile Fingerprint Preserved in Mg and Ca Isotope Variations in Chicxulub Impact Spherules [#6260]
Mass-independent µ48Ca and µ26Mg* signatures in glass spherules from the K–Pg boundary suggest a CV chondritic component was present in the Chicxulub impact plume. The CV chondrite impactor contributed 5–20% to the overall impact plume composition.

4:50 p.m.

Hauser N. *  Maia C.  Reimold W. U.  Abanto W. L.  Borges R.  Lana C.  Pavanetto P.

The Two Types of Impact Melt Rock at the Araguainha Impact Structure, Brazil: New Constraint on the Cratering Formation Processes [#6531]
We present new geochemical and isotopic data from impact melt rocks and target rocks from the Araguainha impact structure.

5:05 p.m.

Reimold W. U. *  Hauser N.  Pereira Maciel A. R.  Goderis S.  Pittarello L.  Wegner W.  Fischer-Goedde M.  Koeberl C.

Genesis of the Mafic Granophyre at Vredefort, South Africa: New Geochemical and Isotopic Constraints [#6131]
New field, petrographic, chemical and isotopic data for a new location of Mafic Granophyre (MG, impact melt rock) in the Vredefort Dome are presented. Formation of MG by assimilation of epidiorite to Felsic Granophyre (FG) is further supported.

5:20 p.m.

Lambert P. *

The Initial Rochechouart Crater [#6168]
We review and discuss the size, shape, environment and age of the Rochechouart impact crater in light of recent geological, geochronological and geophysical studies.

 

Thursday, August 18, 2022

VIRTUAL POSTER SESSION II

5:35 p.m.   Boisdale

A two-hour online session for e-posters

 

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Thursday, August 18, 2022

POSTER SESSION:  EARLY SOLAR SYSTEM RECORDS

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Maurel C.  Gattacceca J.  Barrat J.-A.

Paleomagnetic Investigation of the Oldest-Known Andesite Erg Chech 002 [#6053]
We present the first paleomagnetic study of the oldest-known andesitic meteorite Erg Chech 002. The meteorite holds a stable magnetic record, which may be attributed to the magnetic field that existed in the solar nebula.

Turner G.

Reassessment of the Evidence for 36Ar from 36Cl Decay in Allende Sodalite [#6008]
Presents a new proof of the presence of 36Ar from 36Cl decay in some Allende sodalite. Also presents the evidence of the absence of 36Cl in other samples of sodalite. Places demands on the particle environment in the first 7Myr of the solar system.

Kohler E.  Marcum S. P.  Nuth J. A.

Evidence of Water Retention and Loss in Mg-Silicates and Smokes [#6086]
Amorphous silicates may retain water for longer than originally thought, effecting our understanding of planetary formation and habitability across the solar system.

Luais B.  Florin G.  Cividini D.

The Importance of the Moderately Siderophile and Volatile Germanium in Chondrites and Planetary Reservoirs to Reconstruct Planet Formation [#6472]
Germanium isotopic compositions of chondrites (carbonaceous and ordinary chondrites), and planetary mantles emphasize that there is no unique chondritic Ge isotopic signature to establish the isotopic budget of planetary reservoirs.

Edwards G. H.  Keller C. B.  Stewart C. W.  Newton E. R.

A Bayesian Framework for Exploring the Early Impact History of the Asteroid Belt with Meteorite Thermochronology [#6364]
Preliminary results from a Bayesian framework for estimating the timescales of elevated impact fluxes in the asteroid belt from a database of chondrite 40Ar-39Ar cooling dates.

Ishizaki L.  Tachibana S.  Ida S.  Okamoto T.  Yamamoto D.

Oxygen Isotope Exchange and Crystallization of Amorphous Silicate Dust in Protoplanetary Disks: 3D Monte Carlo Simulation [#6183]
3D Monte Carlo simulation of dust moving in steady-state accretion disks shows that oxygen isotope exchange reaction of amorphous silicate dust with the forsterite stoichiometry may proceed prior to crystallization.

Steele R. C. J.

A Grain Transport Model for the Isotopic Evolution of the Solar System: Implications for the Origin of Nucleosynthetic Signatures in Meteorites [#6463]
I investigate the effects of gas drag in the proto-Solar disk on the relative abundances carrier phases of nucleosynthetic anomalies and discuss the implications for the formation of the isotopic reservoirs of meteorites and terrestrial planets.

Marcum S. P.  Shollenberger Q. R.  Mumpower M. R.  Miller J. M.  Sprouse T. M.  Young E. D.

Origin of r-process Radionuclides in the Early Solar System [#6392]
Modern nucleosynthesis simulations can help constrain the astrophysical origin of r-process nuclides in the solar system.

Makhatadze G. V.  Schiller M.  Bizzarro M.

Tracing Building Blocks of Protoearth and Theia with Nickel Nucleosynthetic Variability [#6247]
We present high-precision mass-independent Ni isotope data for a set of iron meteorites, including a large number of ungrouped irons. We use the data to trace building blocks of the terrestrial planets and discuss models of planet formation.

 

Thursday, August 18, 2022

POSTER SESSION:  REFRACTORY INCLUSIONS

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Ebert S.  Nagashima K.  Krot A. N.  Patzek M.  Bischoff A.

A Well-Rounded Zn-Rich Hal-Like Cai: Evidences for Formation Under Variable Redox Conditions in a Nebular Gas with Variable O-Isotopic Composition [#6009]
A well-rounded Zn-rich and grossite bearing HAL-like CAI from the CO3.1 chondrite Dar al Gani 083. This CAI show evidences for heating events under different oxidation states and in an O-isotopic heterogenous formation region.

Mane P.  Nguyen A. N.  Hahn T. M. Jr.  Simon J. I.

Oxygen Isotopic Composition of Refractory Inclusions from the Miller Range (MIL) 090019 Carbonaceous Chondrite [#6369]
Oxygen isotopic composition of mineral components in different refractory inclusions in MIL 090019 chondrite suggests heterogeneity in the nebular reservoirs.

Bekaert D. V.  Marhas K. K.  Villeneuve J.  Piralla M.  Aléon J.  Neukampf J.  Gounelle M.  Marrocchi Y.

Short-Lived Radionuclides in the First Solar System Solids: Current Paradigm and On-Going Developments [#6435]
We present our most recent analytical developments allowing for high precision 41Ca/40Ca analyses of refractory inclusions, which we interpret in combination with 26Al-26Mg systematics to discuss the source(s) of 41Ca in the early solar system.

Patkar A.  Ireland T.  Avila J.  Turner S.

Water in Calcium-Aluminium Inclusions: Nebular, Asteroidal or Terrestrial? [#6030]
We report the first in situ water measurements in Ca-Al inclusions from CV chondrites. We find considerable water enrichment in CAIs from finds and individual CAI phases from falls are observed to be dry (<10 ppm water).

Hammett M.  Jones R. H.  Tartèse R.

Formation Conditions of Type B Calcium-Aluminium-Rich Inclusions in CV Chondrites: A Comparison of Natural CAIs and Experimental Analogues [#6085]
We aim to further constrain the formation conditions of Type B CAIs by reproducing the texture, mineralogy and mineral chemistry of natural Type Bs using experimental analogues formed under a range of conditions.

Ebel D. S.  Alpert S. A.  Weisberg M. K.

Metal in Amoeboid Olivine Aggregates (AOA) Across Chondrite Groups [#6161]
A range of textures links nodular, unmelted CAIs to AOAs. Olivine-coated metal alloy grains with super-solar Ni and Co are common, always on the outer margins of clusters of CAI-like olivine-coated nodules (AOAs). What do these relationships tell us?

Alpert S. P.  Ebel D. S.  Weisberg M. K.  Carò F.

Electron Backscatter Diffraction of Silicate/Metal Relationships in Amoeboid Olivine Aggregates [#6391]
EBSD of olivine/metal rims on AOAs provide insights into growth histories.

Han J.  Park C.  Keller L. P.

A Record of Nebular and Parent Body Processes of Grossite-Bearing, Fine-Grained Refractory Inclusions from Reduced CV3 Chondrites [#6480]
We present preliminary results of a FIB/TEM study of one grossite-bearing FGI that provide clues to constrain their formation and alteration history in the solar nebula and on the parent body and to address the overall rarity of grossite in CAIs.

Zanetta P-M.  Rao Manga V.  Thakur A.  Zega T. J.  Muralidharan K.

Development of Hibonite as a Barometer for Nebular Oxygen Fugacity [#6500]
We are developing a comprehensive thermodynamic model to relate Ti3+/Ti4+ in hibonite to the fugacity of the early solar nebula accounting for its entire solid solution.

Crossley S. D.

Refractory Inclusions in the Eaton Brass Pseudometeorite? [#6353]
Nininger proposed the Cu-rich object, Eaton, was a new type of meteorite, but it was later considered to be an artificial brass pseudometeorite. We have analyzed the mineralogy of a refractory inclusion that could either be ceramic or an altered CAI.

 

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Thursday, August 18, 2022

POSTER SESSION:  MICROMETEORITES AND IDPS, BUT NOT JUST THAT

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Rojas J.  Duprat J.  Dartois E.  Wu T. D.  Engrand C.  Nittler L. R.  Bardin N.  Augé B.  Boduch Ph.  Rothard H.  Chabot M.  Delauche L.  Mostefaoui S.  Rémusat L.  Stroud R. M.  Guérin B.

The Isotopic Composition of Ultra-Carbonaceous Antarctic Micrometeorites Organics, Ion-Irradiation of Isotopically Heterogeneous Ices [#6276]
Ultra-carbonaceous micrometeorites (UCAMMs) are organic-rich micrometeorites. We report isotopic measurements on UCAMMs and results of ice irradiation experiments that help to better understand the formation of the organic matter in UCAMMs.

Miedtank A.  Hamann C.  Greshake A.  Hecht L.

Formation of S-, I-, and G-Type Cosmic Spherules from Ordinary Chondrite Material: Insights from Laser-Irradiation Experiments [#6404]
Laser-generated melts of a single ordinary chondrite produced material which is similar to the different types of micrometeorites. This offers a chance to infer the parent bodies from the cosmic spherules.

Kuzina D. M.  Voronov K. A.  Yusupova A. R.  Rogov A. M.

Extraterrestrial Matter from Lake Bannoe, South Ural, Russia [#6309]
We present investigations of extraterrestrial matter in lake Bannoe sediments using its magnetic properties.

Boonants T.  Goderis S.  Soens B.  Van Maldeghem F.  Chernonozhkin S.  Vanhaecke F.  Claeys Ph.

Elemental and Oxygen Isotopic Fractionation Recorded in Highly Vaporized Cosmic Spherules from Widerøefjellet, Sør Rondane Mountains (East Antarctica) [#6316]
Based on a sample set of highly vaporized cosmic spherules, this study elaborates on the various elemental and isotopic fractionation processes that micrometeorites undergo upon atmospheric entry.

Muftakhetdinova R. F.  Kuzina D. M.  Bulat S. A.  Grokhovsky V.  I.

Study of Micrometeorites and Cosmic Dust from Antarctica [#6363]
We present investigations of two types of samples. The first is the collection of magnetic micrometeorites from Vostok station. The second is the samples of blue ice originating from different horizons near the Voltat massif.

Boyd M. R.  Genge M. J.  Tomkins A. G.  Holtmann R.

Lightning Strike Samples from the Pilbara, Australia: Criteria for Identifying Lightningogenic Spherules [#6224]
Textures and compositions of microspherules collected in Western Australia indicate a lightning strike formation mechanism. We suggest the features reported here may allow lightningogenic particles to be distinguished in the rock record.

Krämer Ruggiu L.  Goderis S.  Debaille V.  Da Silva A.-C.  Percival L.  Van Maldeghem F.

Extraction of Fossil Micrometeorites from Terrestrial Rocks [#6038]
We compare different methods to extract fossil micrometeorites and other extraterrestrial materials from terrestrial rocks, to evaluate the most effective method, while trying to limit any procedural biases.

Kuzina D. M.  Terekhin A. A.  Valisheva D. I.  Atroshchenko E. A.  Muftakhetdinova R. F.

Investigations of Magnetic Particles from the Roofs [#6314]
We present investigations of magnetic particles of cosmogenic and technogenic origin collected from the roofs.

 

Thursday, August 18, 2022

POSTER SESSION:  CHONDRITES

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Karageozian M. E.  Sharp T.  McDonald C.  van Soest M.

Constraining Shock Effects on the K-Ar System in Meteorites: Anomalous Ages and Implications for Shock Age Interpretation [#6509]
We study the meteorites Mbale and Yamato 75100 with UVLAMP 40Ar/39Ar analyses, WDS and EDS analyses, and Raman spectroscopy to constrain the behavior of K and Ar in highly shocked meteorites as it relates to shock mineralogy and shock heterogeneity.

Roland J.  Debaille V.  Pourkhorsandi H.  De Jong J.  Goderis S.

Moderately Volatile Elements of Variously Shocked Ordinary Chondrites [#6217]
We have determined the shock stage as well as the degree of weathering of a series of H6 ordinary chondrites. We report new trace elements and isotopes data of the moderately volatile elements Zn, Ga, Cu and more refractory Fe in bulk H6 chondrites.

Moreau J.  Jõeleht A.  Hamann C.  Kaufmann F. E. D.  Somelar P.  Plado J.  Stojic A. N.  Hietala S.  Kohout T.

Documenting the Morphological and Chemical Effects of Melt Impregnation of Iron Sulfides into Dunite: A Tool for Meteoritics and Shock Metamorphism [#6049]
Troilite melt migration in dunitic rocks hints at the mechanisms for pervasive shock melting of FeS-FeNi in ordinary chondrites: troilite marked the dunitic olivine with Fe-Ni-Cr chemical exchanges and darkened the lithology.

Mészárosová N.  Skála R.

Relationship of Daubréelite with Troilite: A Study of Troilites of Enstatite Chondrites at the Nanoscale [#6155]
The aim of the study was to shed light on the daubréelite and troilite relationship at the nanoscale. Nanoscale lamellas of daubréelite were found only in two of them. The SAED patterns of troilite also indicate complex twinning or FeS polytype.

Gray M. L.  Weisberg M. K.  Alexander C. M. O’D.  Wang J.  Ebel D. S.

H2O Abundances of an EH6 Chondrite and Potential Implications for Earth [#6452]
We analyzed the H contents of enstatite in EH6 chondrite NWA 7976 using NanoSIMS, to gain a better understanding of the carriers that provided Earth with its volatile inventory, and found significantly lower H contents than previously reported.

Mijjum M.  Blair D.  Tremblay M. M.

Estimating the Compositional Dependence of Cosmogenic Noble Gas Production Rates in E-Chondrite Subsamples Using High-Resolution X-Ray Micro-Computed Tomography [#6033]
We use X-Ray micro-computed tomography (microCT) to map the volumetric distribution of varying mineral phases in enstatite (E) chondrite samples to determine subsample specific production rates of cosmogenic noble gas isotopes in meteorites.

Che S.  Zega T. J.

In-situ Formation of Halite in the Sidi El Habib 001 Ordinary Chondrite [#6012]
The replacement texture of Cl-apatite by halite in Sidi El Habib 001 implies in-situ formation of halite during aqueous alteration on the parent bodies of ordinary chondrites.

Pathak D.  Kadlag Y.  Mezger K.  Srinivasan G.

Tin Stable Isotope Variations in Chondrites: Implications for Planetary and Nebular Processes [#6377]
We present an investigation on the origins of volatiles in rocky planetary bodies using MC-ICP-MS analysis of tin stable isotope systematics in chondritic meteorites.

Baziotis I.  Ferrière L.  Hu J.  Ma C.  Topa D.  Berndt J.  Klemme S.  Xydous S.  Papoutsa A.  Asimow P. D.

Albitic Jadeite in Six L6 Ordinary Chondrites (Kakowa, Chantonnay, Viñales, Ozerki, Northwest Africa 12841, and Chug Chug 011) [#6126]
Under shock-induced conditions, sodic plagioclase may transformed to lingunite, jadeite, or the Na-rich analogue of tissintite, albitic jadeite. Here, we report om albitic jadeite in shock veins from six L6 ordinary chondrites.

Murtazov A. K.  Efimov A. V.  Zhabin V. S.

Visual Spectra of Some Chondrites from the Atacama Desert [#6023]
We are going on with meteorite visible spectra measurements, that were started some years ago. Recently we’ve been ablbe to obtain some meteorites from the Atacama Desert through the courtesy of a famous Russian researcher Timur Kryachko.

Darling J. R.  Storey C. D.  Dunlop J.  Glazer J.  Gonzalez J. J.

Integrated Halogen, Major, Trace, and Isotopic Microanalysis of Planetary Apatites by Femtosecond-LA-LIBS-ICP-MS [#6333]
We report on a new approach to the concurrent microanalysis of halogens, major & trace elements, and U-Th-Pb isotope ratios in apatite, using tandem femtosecond laser ablation (LA) and laser-induced breakdown spectroscopy (LIBS) coupled with ICP-MS.

Schmidt G.

NC–CC Dichotomy Inferred from Ru/Rh and Ir/Rh Mass Ratios of Bulk Chondrites [#6026]
Different condensation temperatures led to variation in PGE ratios in chondrites during solar nebula condensation processes. The fundamental dichotomy between CC and NC groups in the isotopic ratios can also be shown in Ru/Rh vs. Ir/Rh diagrams.

Ostrowski D. R.

High Temperature Thermal Conductivity of Stony Meteorites [#6378]
Thermal conductivity of ordinary chondrites, carbonaceous chondrites and HEDs from 300K up to 850K. Relationship between types, porosity and metal content are examined.

Grokhovsky V. I.  Brusnitsyna E. V.

The Growth Twins in the Chelyabinsk Meteorite as an Indicator Thermal Effects [#6528]
Ffor the first time, we have discovered annealing twins in taenite particles from the Chelyabinsk LL5 meteorite.

Pinto G. A.  Marrocchi Y.  Jacquet E.  Olivares F.

Formation of Chondrule Fine-Grained Rims from Local Nebular Reservoirs [#6001]
Here, we report a systematic survey of FGRs in CO, CM, CV, and CR chondrites; we compare (i) the thickness of FGRs to the size of their host chondrules and (ii) the frequency of FGRs to the modal abundance of matrix in the respective host chondrites.

Floyd C. J.  Lee M. R.

The CIS Method: A Proposed Standardised Protocol for Measuring and Reporting Sizes of Chondrules and Other Chondritic Objects [#6087]
A proposed protocol to standardise methods used to measure objects within chondritic meteorites. Measuring objects/Consistent approach we need/Might this be the way?

Jakubek R. S.  Fries M. D.

New Insights into Chondrite Formation Histories from Fine Carbon Structure Revealed by Raman Imaging [#6327]
Raman Imaging is used to examine the structure of macromolecular carbon (MMC) in a CO3 chondrite. We observe different MMC structures in a chondrule compared to the matrix. This result enables new insights into meteorite formation.

Mc Ardle P.  Clay P. L.  Tartese R.  O’Driscoll B.  Burgess R.

A Combined Halogen and Geochronology Study of Enstatite Chondrites [#6014]
This study includes in situ halogen quantification, in situ Rb-Sr & in situ Ar-Ar dating of enstatite chondrites. The sulfide djerfisherite is the primary target. The study will further our understanding of volatiles in the early inner solar system.

Mei A.  Jiang Y.  Li Y.  Hsu W.

Petrology and Mineralogy of the Northwest Africa 13943 (CK4/5) Chondrite [#6330]
Northwest Africa (NWA)13943 is a newly found CK chondrite. To examine the relationship between CK and CV chondrites, we carried out bulk O and Cr isotopic analysis on NWA 13943, based on comprehensive petrological and mineralogical studies.

Dunham E. T.  Volskis P.  McKeegan K. D.

CAI Size Distributions in NCs and CCs [#6507]
NC and CC CAIs are distinct in that NC CAIs are less abundant, smaller, and more altered. However, NC and CC CAI size distributions have a similar shape implying that their formation and distribution process was similar.

Dyundik S. S.  Maksimova E. M.  Petrova E. V.  Nauhatsky I. A.  Yakovlev G. A.

Structural Characteristics of Troilite from Ordinary Chondrites [#6167]
The unit cell parameters, the degree of non-stoichiometry, and parameters of the fine structure for the troilite from Chelyabinsk, NWA 869, Tsarev, Ravar, Kharabali, and Marsa Alam 009 were determined. Correlation with the shock was noted.

Tiwari K.  Ghosh S.  Miyahara M.  Ray D.

Vesicular Olivines and Pyroxenes in Shocked Kamargaon L6 Chondrite: Implications for Primary Volatiles and its Multiple Impacts History [#6193]
We report the first occurrence of vesicular olivine and pyroxene in an ordinary chondrite and multiple impact history of Kamargaom L6 chondrite.

Muftakhetdinova R. F.  Grokhovsky V. I.  Khotinov V. A.  Brusnitsyna E. V.

Mechanical Properties of Various Lithologies of the Chelyabinsk Meteorite [#6399]
We studied the mechanical properties of the Chelyabinsk chondrite with the structure of impact metamorphism in space and after impact, loading them in the laboratory.

Hutson M. L.  Ruzicka A. M.  Fries M. D.  Friedrich J. M.  Ziegler K.

More Evidence for Unique Aqueous Alteration on the L-Chondrite Parent Body [#6065]
Raman data support the conclusion that a clast in Northwest Africa 12380, an L3 chondrite, was produced by pre-terrestrial aqueous alteration. ICPMS and O-Isotope data suggest that both clast and host meteorite are from the same chemical group.

Vacher L. G.  Ogliore R. C.

Determination of Water D/H in Hydrated Chondrites Using NanoSIMS Imaging [#6302]
We present a new NanoSIMS 50 acquisition and analysis technique to precisely and accurately determine the water D/H of hydrated chondrites on small matrix areas, such as returned samples from C-complex asteroids Ryugu (JAXA) and Bennu (OSIRIS-REx).

Voropaev S. A.  Dushenko N. V.  Fedulov V. S.  Senin V. G.

Electronic Probe Study of DHAJALA (H3.8)Meteorite’s Main Minerals [#6068]
The study of main minerals chemical composition of Dhajala (H3.8) chondrite was carried out by CAMECA SX 100 electronic probe. The analysis showed the presence of partially balanced olivines, pyroxenes and plagioclase (Na-Ca solid solutuions).

Szurgot M. A.  Wach R. A.  Unsalan O.  Altunayar-Unsalan C.

The Thermal Conductivity of the Bursa Chondrite [#6099]
Thermal conductivity of Bursa L6 chondrite was predicted at temperature range 200-300 K, for air and for vacuum conditions using various models of rocks and relationships between thermal conductivity and porosity.

Moreau J.  Stojic A. N.  Jõeleht A.  Plado J.  Hietala S.  Morlok A.  Kohout T.

Optical Darkening of Dunite by Sulfide Mobilization [#6083]
We experimentally darkened dunitic rocks with iron sulfides at high temperature. Using spectral analyses, we aim to offer an analog to understand alterations of reflectance spectra occurring on asteroid surfaces and in ordinary chondrites.

Moggi Cecchi V.  Fabrizi L.  Manzari P.  Agrosì G.  Tempesta G.  Cuppone T.  Pratesi G.

Minerochemical and Textural Features of Northwest Africa 14897, a New Highly Equilibrated Chondrite from Sahara [#6419]
The minerochemical and texturals features of Northwest Africa 14897, a new LL7 highly equilibrated ordinary chondrite from the Sahara Desert, are provided.

 

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Thursday, August 18, 2022

POSTER SESSION:  CARBONACEOUS CHONDRITES

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Kouvatsis I.  Cartwright J. A.  Hames W. E.

The Aguas Zarcas Carbonaceous Chondrite Meteorite: A Study of Chondrules, Fine-Grained Rims, and Indications for a Heterogeneous Parent Body [#6308]
We study the formation and evolution of fine-grained rims (FGRs) in the carbonaceous chondrite Aguas Zarcas.

Wombacher F.  Kerraouch I.  Bischoff A.

Composition and Petrography of Recent Type 1 and 2 Carbonaceous Chondrite Falls [#6219]
We analysed the recent carbonaceous chondrite falls Flensburg C1, Kolang CM1/2, Aguas Zarcas CM2, Winchcombe CM2 and Tarda C2 together with the CM2 chondrites Murchison and Paris for their chemical composition including Hg.

Lee M. R.  Daly L.  Trimby P. W.  Piazolo S.

The Sequence of Carbonate Mineralization in the CM Carbonaceous Chondrites Revealed by the Winchcombe Meteorite [#6431]
The recent CM fall Winchcombe contains a comprehensive collection of carbonates that track its progressive alteration.

Jenkins L. E.  Lee M. R.  Daly L.  King A. J.  Einsile J. F.  Salge T.

Rudashevskyite in the Winchcombe CM Chondrite: A Sulfide from Either Nebular Condensation or Metasomatic Alteration [#6123]
Rudashevskyite, / Related to sphalerite, / How did you get here?

Bonsall E.  Bates H. C.  King A. J.  Schröder C.

Iron Mineralogy and Oxidation States of the Winchcombe Meteorite [#6379]
We have measured iron mineralogy and oxidation states of the Winchcombe meteorite using Mössbauer spectroscopy. All metallic iron has been altered to tochilinite and minor magnetite. Ferric iron (25-30% of total iron) is hosted by cronstedtite.

Johnson D.  Bramley K.  Kimpton C.  White L.  Suttle M. D.  King A.  Daly L.  UK Fireball Alliance  Winchcombe Consortium

Investigation of Tochilinite Cronstedtite intergrowths (TCI’s) in the Winchcombe CM2 Carbonaceous Chondrite [#6408]
FIB-TOFSIMS data shows the elemental distribution of Tochilinite growth structures formed by alteration events in the Winchcombe meteorite parent body that have localized variations most probably relating to changes in its permeability.

Verchovsky A. B.  Grady M. M.  Findlay R.  Greenwood R.  Abernethy F.  Franci I.  Anand M.  King A. J.

Solar Wind Ne in Winchcombe: Indication of Origin from the Parent Body Regolith [#6494]
We analysed Winchcombe meteorite for noble gases. Solar wind Ne is the domination component in the meteorite.

Shirley K. A.  Curtis R. J.  Bates H. C.  King A. J.  Bowles N. E.

Visible and Infrared Spectral Analysis of the Winchcombe Meteorite for Comparison with Planetary Surfaces [#6236]
Visible and infrared reflectance spectra were measured for several samples of the Winchcombe meteorite that fell in 2021. We provide analyses of the spectral features and derived properties for comparison to other meteorites and asteroids.

Cantillo D. C.  Reddy V.  Sharkey B.  Pearson N.  Campbell T.  Satpathy A.  De Florio M.  Battle A.

Grain Size Effects on UV-MIR (0.2–15 μm) Spectra of Carbonaceous Chondrite Groups [#6130]
We constrained the grain size effects on spectra of six carbonaceous chondrite groups (CM, CO, CV, CR, CK, and ungrouped) over a wide wavelength range (0.2–15 μm). Broad trends were observed in absolute reflectance, slope, and band characteristics.

Schultz C. D.  Anzures B. A.  Milliken R. E.  Hiroi T.  Robertson K.

How Variable are Hydration Signatures of CM2 Chondrites? — Comparing Spectra of Meteorite Chips Across Multiple Spatial Scales [#6103]
IR reflectance spectra measured at the micron- and mm-spatial scale were acquired from a suite of CM2 chondrites chips that sample a range of extent of aqueous alteration. We compare the diversity of spectral hydration features to bulk mineralogy.

Prestgard T. J.  Beck P.  Bonal L.

Deciphering the Parent Bodies of Heated CMs [#6187]
Some Stage-II and III heated CM chondrites, and Elephant Moraine (EET) 83355, have spectra similar to C, Cg and/or X-type asteroids. A subset of these small bodies may hence have surfaces rich in amorphized serpentine.

Findlay R.  Franchi I. A.  Greenwood R. C.  Anand M.  King A. J.  Suttle M.  Ensor G.

The C3-Ungrouped Chondrite NWA 13053: Further Evidence for a Heterogeneous and Thermally Altered Carbonaceous Asteroid? [#6464]
NWA 13053 is a C3-ungrouped chondrite that is one of many recently found in Morocco and Algeria. They are mostly anhydrous and their trend in oxygen 3-isotope space suggests a similar, but distinct parent asteroid to the CM chondrites.

Alevy E. G.  Dunn T. L.

Northwest Africa (NWA) 10588: An Equilibrated CV Chondrite? [#6062]
We collected mineral chemistry and textural analyses of NWA 10588 to characterize its degree of metamorphism and revisit its initial classification.

Dobricǎ E.  Maxwell J. L.  Krot A. N.

TEM Analysis of FeO-Rich Olivines in Kaba: Implications for Understanding the Role of Fluids in CV Chondrites [#6445]
This study aims to understand the hydrothermal alteration and fluid-assisted metamorphic growth of ferroan olivine associated with nearly pure fayalite on the parent bodies of CV chondrites.

Allen N. M.  Riebe M. E. I.  Foustoukos D. I.  Busemann H.  Alexander C. M. O’D.  Cody G. D.  Maden C.

Noble Gases in Hydrothermally Altered Murchison (CM2) Insoluble Organic Matter [#6215]
Noble gas analysis of experimentally altered Murchison (CM2) insoluble organic matter to investigate the effects of hydrothermal alteration across variations in experiment timescale and temperature conditions.

Benner M. C.  Zega T. J.  Ziurys L. M.

Alteration of P-Bearing Phases in Allan Hills 77307 and Murchison Meteorites [#6410]
We performed a coordinated analysis of P-bearing phases in pristine to aqueously altered carbonaceous chondrites to help constrain the delivery and alteration of P in the early solar system.

Patkar A.  Ireland T.  Avila J.  Turner S.

Water Concentration and Oxygen Isotopes in Nominally Anhydrous Minerals from CM2 Murchison Chondrite [#6029]
Using a new mounting technique, we measured trace amounts of water in olivines and pyroxenes from CM2 Murchison chondrite and found a strong correlation between the oxygen isotopic composition, water concentration and Mg# of type I and II olivines.

Hanna R. D.  Ketcham R. A.  Edey D. R.

Fine-Grained Rim Porosity Structure in CM Murchison — Formation or Alteration Signature? [#6346]
We are examining the porosity structure of CM Murchison fine-grained rims with XCT and Xe gas to infer their formation and alteration conditions.

Floyd C. J.  Lee M. R.

A New Record of Chondrule Sizes Within the Carbonaceous CM Chondrites and Implications for Understanding the CM-CO Chondrite Clan [#6088]
A new record of chondrule sizes within the carbonaceous CM chondrites. CM and CO/A connection between them?/What sizes may show.

Glenewinkel B. F.  Hanna R. D.

Investigation of Fabrics in CO Chondrite Miller Range 05024 Using XCT and EBSD [#6359]
We are examining olivine grain orientations within fine-grained rims and matrix areas of MIL 05024.

Bonato E.  Salge T.

Modal Analysis of Fine Grained Rims in Primitive CO3 Carbonaceous Chondrite Meteorites by Low Voltage SEM/EDS [#6407]
Application of a novel approach for the determination of the modal mineralogy of FGRs in carbonaceous chondrites by SEM/EDS.

Laurent B.  Viennet J-C.  Beyaz C.  Brunetto R.  Remusat L.

Evolution of the Orgueil Meteorite Through Asteroidal Conditions [#6050]
We submitted grains from the Orgueil Meteorites to asteroidal conditions, in presence of three different labelled waters, to address the role of mineral matrix during the aqueous alteration of the insoluble organic matter.

Ivanova M. A.  Lorenz C. A.  Zinovieva N. G.  Ryazantsev K. M.  Korochantsev A. V.

Paradoxal Refractory and Volatile Element Rich Glass Inclusions in the Metal Globules of the Sierra Gorda 013 CBa-Like Chondirte [#6098]
Here we present results on an investigation of rare glassy inclusions trapped in the Fe,Ni-metal globules of the SG 013 CBa-like chondrite and discuss their origin in the light of heterogeneity of the plume formed during collision of planetesimals.

Villalon K. L.  Greer J.  Nittler L. R.  Alexander C. M. O’D.  Isheim D.  Seidman D. N.  Heck P. R.

Undiliuted Isotopic Measurements of Meteoritic Nano-Oxides Through Atom Probe Tomography [#6510]
We present results for the first atom probe tomography study of a meteoritic chromite.

Bresson C.  Schiller M.  Bizzarro M.

Potassium Isotope Heterogeneity within Chondrites [#6347]
We analyzed the K isotopes of multiple digestions of the Orgueil and Murchison chondrites. In contrast to Orgueil, Murchison shows isotopic variability attributable to variable mixtures of CI-like matrix and material enriched in heavy K.

North T. L.  Muxworthy A. R.  Collins G. S.  Davison T. M.

Thermoremanent Magnetisation Recorded During Impact-Induced Compaction Experiments on Synthetic Chondritic Meteorites [#6394]
Through a set of impact experiments we have imparted a remanent magnetisation to porous chondrite material. We identify a strong magnetic fabric and report an unblocking temperature that closely matches mesoscale iSALE simulations of the experiment.

Leyva V.  Vinogradoff V.  Pepino R.  Cazals L.  Serra C.  Danger G.  Meinert C.

Analysis of Silicate-Catalyzed Sugar Synthesis Under Hydrothermal Conditions [#6517]
Study of the plausibility of the Formose reaction network as underlying mechanism for carbohydrate formation under conditions simulating aqueous alteration processes in asteroids using olivine as a mineral catalyst.

Shober P. M.  Caffee M. W.  Bland P. A.

Forming Carbonaceous Chondrites in Near-Earth Space [#6421]
By modelling carbonaceous meteoroid ejections in near-Earth space, we determined that an active formation and ejection of CI/CM chondrites are more consistent with the meteoritic record than impacts in the main belt.

 

Thursday, August 18, 2022

POSTER SESSION:  SPACE WEATHERING: THE FORECAST CALLS FOR SOLAR WIND AND IMPACTS

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Bradley J. P.  Ishii H. A.  Ohtaki K.  Ciston J.

Confirmation of Water in the Space Weathered Surface of Itokawa Grains [#6153]
Space weathered surfaces of Itokawa grains show direct evidence for impacts and solar wind irradiation. Electron energy loss spectroscopy confirms the presence of water in an amorphized rim on Itokawa olivine.

Patzek M.  Rüsch O.

Experimentally Induced Thermal Fatigue on Lunar and Eucrite Meteorites — Influence of the Mineralogy on Rock Breakdown [#6229]
Experimentally cycled lunar and eucrite meteorites respond differently to thermal fatigue. The results imply differences in the expected regolith for mineralogically different surface materials (e.g., mature regolith vs. primary rocks).

Laczniak D. L.  Thompson M. S.  Christoffersen R.  Dukes C. A.  Morris R. V.  Keller L. P.

Unraveling Solar Wind Space Weathering of Carbon-Rich Asteroids: Low-Flux vs. High-Flux Ion Irradiation of Murchison [#6476]
Low-flux and high-flux He+ and H+ irradiation of the Murchison meteorite helps reveal how ion flux influences solar wind space weathering of carbon-rich asteroids. We discuss spectral, microstructural, and chemical alteration.

 

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Thursday, August 18, 2022

POSTER SESSION:  MISSIONS AND SMALL BODIES

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Ipatov S. I.

Mixing of Planetesimals in the TRAPPIST-1 Exoplanetary System [#6059]
Outer layers of neighbouring planets in the TRAPPIST-1 system can include similar material, if there was a lot of planetesimals near their orbits at the late stages of the accumulation of the planets.

Ipatov S. I.

Probabilities of Collisions of Bodies Ejected from the Earth with Planets and the Moon [#6104]
About 10–20%, 20–25%, and 0.6% of bodies ejected from the Earth after its collision with a planetesimal into heliocentric orbits later (during 200–350 Myr) collided with the Earth, Venus, and the Moon, respectively.

Gorbanev Yu. M.  Konovalova N. A.  Davrukov N. Kh.

Groups of Meteorite-Dropping Fireballs in Near-Earth Asteroidal Orbits [#6074]
In the current abstract we focus in a explores the possibility of the existence of sporadic fireball groups associated with nine known meteorites for which atmospheric and orbital parameters have been obtained from instrumental observations.

Boaca I.  Gritsevich M.  Birlan M.  Nedelcu A.  Boaca T.  Colas F.  Malgoyre A.  Zanda B.  Vernazza P.

Heliocentric Orbits of Fireballs from the MOROI Project [#6231]
We determine the heliocentric orbit of the fireballs detected by the FRIPON-MOROI network.We compute the orbital elements and the parent bodies using the Meteor Toolkit.

Boaca I.  Gritsevich M.  Birlan M.  Nedelcu A.  Boaca T.  Colas F.  Malgoyre A.  Zanda B.  Vernazza P.

Analysis of Luminous Trajectories of Fireballs Recorded in Romania [#6228]
We characterize the fireball events captured by the FRIPON-MOROI network in Romania. The final outcome of the meteoroids’ entry into the atmosphere is shown as “likely fall”, “possible fall” and “un-likely fall”.

Gritsevich M.  Nissinen M.  Oksanen A.  Suomela J.  Ryske J.  Silber E. A.

The Hourglass Shape of the Dust Trail of Comet 17P/Holmes [#6367]
We present first direct observation showing the hourglass pattern (HP) formed by the particles in cometary trail. By varying the outburst model we find assumption of the spherical symmetry of the ejected particles compatible with the observed HP.

Fries M. D.

Preliminary Modeling of Potential Interstellar Bolide (08 Jan 2014) Suggests Further Examination is Worthwhile [#6348]
A bolide on 08 Jan 2014 has been hypothesized as interstellar in origin. A preliminary examination of meteor dynamics indicates an iron meteorite may explain the reported details. More work with more detailed models is warranted and needed.

Sharkey B. N. L.  Reddy V.

Are Carbonaceous Chondrites Appropriate Analogs for Small Bodies in the Outer Solar System? [#6097]
We present novel telescopic spectra of Uranian irregular satellites and Neptune Trojans. We discuss how comparisons between carbonaceous chondrites and these poorly understood solar system objects can aid understanding of their spectral variations.

Ebel D. S.  Gemma M. E.  Emmart C.  Trakinski V.  Smith R. L.  Acinapura M.  Abbott B.  Faherty J.  Villa M.  Kinzler R.

OpenSpace: Interactive Visualization of Space Science [#6160]
OpenSpace is an open-source interactive data visualization software designed to visualize Earth observations, planetary missions & data, and the known universe. Outreach activity, a demo, new features and updates are described; questions are invited.

Tollenaar V.  Zekollari H.  Lhermitte S.  Tax D. M. J.  Debaille V.  Goderis S.  Claeys P.  Pattyn F.

Data and Machine Learning to aid the Search for Antarctic Meteorites [#6331]
Looking for Antarctic meteorites? Check out: wheretocatchafallingstar.science. With machine learning, we identified potential Antarctic meteorite collection sites. Our data indicates that <15% of Antarctic meteorites have been recovered to date.

Smith J. C.  Morris R.  Longenbaugh L.  Dotson J.  McCurdy N.

Pipeline Development and Statistical Analysis of Bolides Detected by the GOES Geostationary Lightning Mappers [#6067]
The GLM instrument onboard the GOES satellites can detect bolides. We have deployed a machine learning based bolide detection pipeline at the NASA Advanced Supercomputer Facility. Detections published at https://neo-bolide.ndc.nasa.gov.

Battle A.  Reddy V.  Sanchez J. A.  Sharkey B. N. L.  Pearson N.  Bowen B.

Evidence of Shock Darkening/Impact Melt on Near-Earth Asteroid (52768) 1998 OR2 [#6035]
We present visible and near infrared spectroscopy of (52768) 1998 OR2 as evidence of shock darkening on the near-Earth asteroid. We analyze shocked meteorite Chergach as an analog to constrain the amount of shock darkened material on the surface.

Carlson M. A.  Johnson B. C.

Vaporization During Bolide Fragmentation [#6313]
Bolides are meteors that explosively fragment during their descent towards Earth. We show the effect vaporization of material affects this fragmentation process and the amount of material that ultimately reaches the surface of the earth.

Silber E. A.  Bowman D. C.  Albert S.

Infrasound Detection of the Earthgrazing Fireball over Europe on 22 September 2020 [#6139]
We present infrasound analyses of an earthgrazing fireball that streaked the sky over Europe on 22 September 2020.

Andreev A. O.  Nefedyev Y. A.  Demina N. Y.  Korchagina E. P.

The Simulation of Meteoroid Content in the Circumlunar Space for Analyzing the Parameters of Possible Lunar Impactors [#6321]
Using interpolation regression methods models of meteoroid abundance in the circumlunar space based space missions observational are built . Metrics of meteoroid orbits were used to study the genetic relationships meteor showers and parent bodies.

Karimi K.  Kletetschka G.

Clues of Earth like Tectonics and Mantle Convections in Venus Based on its Gravity Parameters [#6021]
Based on a comparison between the various gravity signatures (gravity aspects) of Venus and the Earth, some convection patterns (upwelling and downwelling regimes), as well as inactive tectonics boundaries is presented for Venus.

 

Thursday, August 18, 2022

POSTER SESSION:  MARS

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Aucamp T.  Howarth G. H.  Peel C. J.  Day J. M. D.  Greshake A.

Petrogenesis of the Dar al Gani (DaG) Olivine-Phyric Shergottites and Implications for Volcanism on Mars [#6119]
This study attempts to constrain the petrogenetic relationship between the Dar al Gani olivine-phyric shergottites (DaG 476, 670, 735, 876, 975 and 1037) to better understand part of the volcanic history related to the 1.1 Ma ejection site on Mars.

Forman L. V.  Benedix G. K.

A Crystallographic Analysis of Northwest Africa 8159: Crystallization and Impact Conditions [#6239]
Investigations into the crystallographic properties of plagioclase phenocrysts in NWA 8159 demonstrate a settling texture is present, indicative that the final phase of crystallisation occurred whilst a stationary or slow-moving body of magma.

Bowden D. L.  Bridges J. C.  Cousin A.  Rapin W.  Pinet P.  Semprich J.  Payre V.  Sautter V.  Gasnault O.  Forni O.  Gasda P.  Das D.  Schwenzer S. P.  Wiens R. C.  Bedford C. C.

Aqueous Alteration of the Askival Feldspathic Cumulate Sample in Gale Crater [#6248]
Gale crater has unique feldspathic cumulate samples. We present LIBS analysis of the Askival target’s aqueous alteration and compare to a similar but unaltered target, Bindi, to characterise both martian feldspathic cumulate and alteration processes.

Gackstatter E. J.  Mayne R. G.  Filiberto J.  Singletary S.  Mani

Classification and Characterization of New Poikilitic Shergottite, Northwest Africa 14904 [#6289]
Classification / of new martian shergottite: / its poikilitic.

Yamazaki S.  Mikouchi T.  Tang C. P.

Petrological Diversity of Poikilitic Shergottites: Insights from the 5-centimeter Slab of Northwest Africa 133366 Shergottite [#6185]
We analyzed a ~5 cm polished slab of NWA 13366 poikilitic shergottite by EPMA. We found a few cm aggregate of early crystallized pyroxene oikocrysts, suggesting that textual diversity of poikilitic shergottites is present on such a small scale.

Dickens D.

A New Cr-Spinel Bearing Poikilitic Martian Shergottite Northwest Africa 14713 [#6338]
Northwest Africa 14713 is a new Cr-bearing poikilitic martian meteorite discovered in 2021 with a total mass of ~3 kg.

Hewins R. H.  Jacob D.  Leroux H.  Pont S.  Lorand J.-P.  Beyssac V.

Northwest Africa 14672, an Olivine-Phyric Shergottite with Shock Melting [#6205]
Silicate compositions resemble those of ferroan basaltic shergottites. Barred plagioclase, glass with olivine dendrites, vesicular maskelynite, granular mineral aggregates, and coesite are present. It is a heavily melted shock stage S6 shergottite.

Willcocks F. M.  Stephen N. R.  Grimes S. T.  Mitchell J. T.

A New Terrestrial Analogue for Martian Volcanism; An Unexpected Match for the Shergottite Meteorites [#6018]
Scanning Electron Microscopy was used to find accurate terrestrial analogues for martian volcanism. Here, we present our findings including an unexpected sample that proved to be the most similar to the martian meteorites analyzed.

Ramsey S.  Udry A.  Day J. M. D.  Ostwald A.

Formation and Emplacement of the Northwest Africa 13669 Nakhlite [#6028]
Northwest Africa 13669 is a new nakhlite and may represent a previously unsampled flow, sill, or dike from the nakhlite complex on Mars based on major, minor, and trace element bulk-rock and mineral chemistry and crystal size distributions.

Krämer Ruggiu L.  Devouard B.  Gattacceca J.  Bonal L.  Piani L.  Leroux H.  Grauby O.

The Complexity of Aqueous Alteration Veins in Nakhlites [#6037]
We studied iddingsite in Caleta el Cobre 022, a nakhlite that contains a high amount of alteration products, and compared this meteorite to 7 other nakhlites, and we suggest that fluid alteration in the nakhlites has a complex multistage history.

Ostwald A. M.  Udry A.  Day J. M. D.  Gross J.

Complex Zoning in the Nakhlite and Chassignite Martian Meteorites [#6125]
Preserved by slowly-diffusing elements, complex zoning present in the nakhlite and chassignite martian meteorites reveals multiple populations of each cumulus phase.

Bridges J. C.  Piercy J. D.  Hicks L. J.

Nakhlite Carbonate and the Carbon Cycle on Amazonian Mars [#6343]
The nakhlite carbonate-saponite-serpentine assemblage represents part of the Amazonian carbon cycle. Fischer-Tropsch reactions associated with carbonate dissolution and replacement are likely to be a major source of CH4 within the Mars crust.

Valdes M. C.  Heck P. R.

Characterization of an Olivine-Rich Clast in Black Beauty [#6525]
Here we characterize a large, olivine-rich clast (a previously uncharacterized clast type) in martian meteorite NWA 7034 (Black Beauty).

Lagain A.  Bouley S.  Miljković K.  Rajšić A.  Baratoux D.  Payré V.  Doucet L. S.  Timms N. E.  Hewins R.  Benedix G. K.  Malarewic V.  Servis K.  Bland P. A.

The Ejection Site of Black Beauty Revealed by 90 Million Impact Craters [#6069]
The source and geological context of the oldest martian meteorite, “Black Beauty” is currently unknown. Here, we show that the meteorite was ejected from the Terra Cimmeria – Sirenum province, relic of the differentiated primordial martian crust.

Goodwin A.  Tartèse R.  Garwood R. J.  Almeida N. V.

Using Multiscale X-Ray Computed Tomography (XCT) to Characterise the Lithological Variability Within the Northwest Africa 11220 “Black Beauty” Martian Regolith Breccia [#6264]
The martian meteorite NWA 11220 is thought to preserve a complex history of near-surface processes. We use multiscale XCT to identify multiple episodes of brecciation, and pair 3D observations with published clast classification schemes.

North T. L.  Collins G. S.  Davison T. M.  Muxworthy A. R.  Steele S. C.  Fu R. R.

The Heterogeneous Response of Martian Meteorite Allan Hills 84001 to Planar Shock [#6446]
We have performed mesoscale simulations using iSALE to shock high resolution cross-sections of a martian meteorite. The cross-sections respond with steep thermal gradients on the sub-mm scale, caused by shear heating in the bulk material.

Horgan B.  Tinker C.  Howl B.  Sinha P.  Minton D.  Fenton L.  Smith R. J.

Impact Spherules as a Global Source of Sand on Mars [#6526]
New analysis of Mars orbital spectral data reveals that glass is a significant component of sand in global dunes, and the properties of this sand in some locations is consistent with accumulation of impact spherules over long time periods.

Law E. S.  Day B. H.

A Terrestrial Analog Portal in Support of Martian Surface and Impact Analyses [#6151]
We are proposing to add a Terrestrial Analog Trek to the suite of solar system Treks portals (https://trek.nasa.gov). It will greatly facilitate comparative planetology and enhanced understanding of key processes such as impact cratering.

Douglas J. A.  Hallis L. J.  O’Brien Á. C.  Toney J. L.  Salik M. A.

Perfecting the Gas Chromatography — Mass Spectrometry (GC-MS) Analytical Protocol for the Identification of Martian Meteorites Organics [#6156]
Indigenous organic compounds exist on Mars. Understanding the optimum protocol for extraction of these organics from martian meteorites by using GC-MS in Earth based labs will be beneficial for ex-situ analysis on returned martian material.

Carrier B. L.  Kminek G.  Meyer M. A.  Beaty D. W.  Wadhwa M.  Thiessen F.  Hays L. E.

Mars Sample Return: Planning for Returned Sample Science [#6511]
As M2020 continues to collect amazing samples on Mars, the MSR Program prepares to retrieve the samples and deliver them to Earth. This presentation is focused on the ongoing planning for the science that will take place when the samples arrive.

Motaghian S.  Almeida N.  Grindrod P. M.  Stabbins R. B.  Schroeder C.  Cousins C. R.  Allender E. J.

Searching for Meteorites on Mars with the Rosalind Franklin Rover [#6225]
Meteorites on surfaces of other planets has become an increasingly important tool in planetary exploration. Tools and software has been developed to expedite the identification of these meteorites and allow analysis on mission tactical timelines.

Davidson J.  Wadhwa M.  Sutton S. R.  Hervig R. L.

Water on Mars: Correlated Microscale Analyses of Hydrogen Isotopes, Water Contents, and Redox State in Martian Pyroxenes [#6109]
We present correlated δD–H2O–Fe3+/ΣFe systematics for the early-formed primary igneous mineral pyroxene in the martian meteorites Nakhla, Lafayette, and NWA 7034.

Hallis L. J.  Jakosky B. M.

The History and Inventory of Water on Mars [#6084]
Calculating the water inventory of Mars based on D/H ratio changes over time, and issues raised by martian meteorite D/H variability.

 

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Thursday, August 18, 2022

POSTER SESSION:  IMPACTS II

6:30 p.m.   Poster Hall Two

Authors (*Denotes Presenter)

Abstract Title and Summary

Faucher J.  Déhais T.  Luais B.  Kaskes P.  de Graaff S. J.  Debaille V.  Lambert P.  Claeys P.  Goderis S.

Non-Traditional Stable Isotope Variations in the Impactites of the Rochechouart Impact Structure: Tracing Impact Volatilization, Melting, Mixing, and Hydrothermal Overprinting [#6142]
This study focuses on non-traditional isotopes ratio in the impactites of the impact structure of Rochechouart (Fr). Nineteen samples from the drilling campaign of 2017 have been analysed for their germanium [Ge] content and isotopic composition (delta 74/70Ge).

Guerrero D.  Reimold W. U.  Hauser N.  Lana C.  Lambert P.

New U-Pb Zircon Age Data for Basement and Impact Melt Rocks from the Rochechouart Impact Structure, NW Massif Central, France [#6520]
We present U-Pb isotope data on zircon for impact melt rocks and basement rocks from the Rochechouart impact structure. The aim is to obtain new information about the target composition.

Wittmann A.  Lambert P.

Spherules and Microcrystites in Rochechouart Impactoclastite Dikes [#6508]
Rochechouart impactoclastite dikes contain spherules and microkrystites, some associated with MgAlFeCrNi spinel suggesting emplacement within days after the impact due to decompression in the crater floor triggered by gravitational adjustments.

Simpson S. L.  Rampe E. B.  Christoffersen R.  Tu V.  Kring D. A.  Longstaffe F. J.

TEM and XRD Investigation of Impact Glass Alteration Products in Terrestrial Craters: Amorphous Materials, Phyllosilicates and Everything in Between [#6489]
TEM and XRD analysis of altered impact glass reveals phyllosilicates, an amorphous phase and single layer mineral(oid)s, comparable to soils in other terrestrial environments and potentially Gale Crater, Mars.

Caudill C. M.  Osinski G. R.  Tornabene L. L.  Longstaffe F. J.  McCarty D. K.  Sapers H. M.

Pre- and Syn-Impact Formation of Clay Minerals at the Ries Impact Structure, Germany: Implications for Clay Minerals on Mars [#6024]
The aim of this study is to better understand the role of meteorite impacts in forming and exhuming clay minerals on Mars through a detailed field and laboratory investigation at the Ries impact structure, Germany.

Goodwin A.  Tartèse R.  Garwood R. J.  Joy K. H.

Diagenetic Alteration of Carbon: Stac Fada as a Martian Analogue [#6269]
The Stac Fada Member is a Mesoproterozoic ejecta layer exposed in NW Scotland that is analogous to impact-bearing lithologies on mars. We use Raman spectroscopy to identify potential impact diamonds, and organics catalysed on diagenetic minerals.

Alsemgeest J.  Brouwer F. M.

Impact-Reactivation of a Hydrothermal System at Vargeão Dome, Brazil [#6052]
The Vargeão Dome, Brazil, is a unique analogue for impact structures on Mars. Hydrothermal veins were likely reactivated by impact, indicating elevated potential for life in impact structures on Mars >20 km with a fossil hydrothermal system.

Ernstson K.  Matheisl H.- P.  Poßekel J.  Rappenglück M. A.

The Wyoming Impact Crater Field: Secondary Cratering vs. Primary Cratering [#6079]
We reject the proposed secondary cratering origin of the Wyoming impact crater field, citing fundamental methodological flaws in the argument. This concerns in particular the properties of the small craters and the nonexistence of a primary crater.

Moore R. B.

Modelling the Southern Mt Lofty Ranges and KI Multiple Impact via a Digital Elevation Model and Informed by Indigenous Knowledge [#6133]
A supported study by Haines et al (1999) of two impacts in the Adelaide Hills was followed up (Haines 2000) by a bold proposal of a shallow angle multiple impact involving also a site on Kangaroo Island. A DEM study supports melt breccia locations.

Collins G. S.  Schwarz D.  Wojcicka N.  Daubar I. J.  Neidhart T.  Miljkovic K.  Sansom E. K.  Garcia R. F.  InSight Impacts Science Theme Group

Bayesian Inversion of Impactor Parameters from Properties of Crater Clusters on Mars [#6259]
We use a Markov-Chain Monte Carlo approach to determine the statistical distribution of impactor parameters that are most likely to have formed recent impact craters and crater clusters observed on Mars that were also detected seismically.

Stickle A. M.  Martin A. C.  Patterson G. W.

Evaluating Lunar Ejecta Maturity Across Wavelengths Can Provide New Insight into Relative Ages [#6458]
We examine lunar surface maturity using LRO datasets from UV to radar. Early results suggest that maturity can be traced across wavelengths, though specific correlations are ongoing.

Liu T.  Wünnemann K.  Michael G.

3D-Simulation of Cumulative Impact Fragmentation: How Did the Lunar Megaregolith Evolve? [#6279]
a 3D Monte Carlo numerical model is developed to simulate the cumulative impact fragmentation process which is known to be essential for understanding the crustal evolution. The evolution of lunar megaregolith is constrained using the model.

Bjonnes E.  Johnson B. C.  Andrews-Hanna J. C.  Garrick-Bethell I.  Kiefer W. S.

Excavation of Lightly Shocked Deep Lunar Material During Crater Collapse [#6516]
Motivated by a subset of Apollo samples, we investigate if ejecta is generated during the crater collapse stage of an impact. We find that this process is intrinsic to basin formation and may explain lightly shocked rocks found at the surface.

Raducan S. D.  Jutzi M.

Deformation of Small Asteroids by Impacts and Implications for NASA’s DART Mission [#6235]
We study the consequences of small (~500 kg) impacts on the physical evolution of small asteroids and make predictions of the outcome of the DART impact.

Allibert L.  Landeau M.  Nakajima M.  Röhlen R.  Maller A.  Lherm V.  Wünnemann K.

Impact Cratering: Scaling from Low Velocities to High Velocities [#6441]
We compare laboratory experiments with numerical simulations for subsonic impact speeds to test whether numerical simulations reproduce the laboratory experiments and increase the impact velocity until reaching realistic supersonic values.

Echaurren J. C.

Estimating Both Impact and Tsunami Conditions for a Possible Collision Between the Earth and One Apophis-Sized Asteroid [#6025]
The possible scenario of the impact on Earth with an object of similar dimensions to Apophis is explored here, as well as the tsunami associated with the impact in the ocean.

Pereira F. L.  Crosta A. P.  Vasconcelos M. A. R.

Geophysical Studies of Nova Colinas, Brazil’s Newest Impact Structure [#6479]
We present the geophysical characterization of Nova Colinas, the newest confirmed impact structure in Brazil.

Takáć M.  Kletetschka G.  Petrucha V.

UAV Magnetometer Survey of the Acraman’s Crater Epicenter [#6430]
To retrieve more information about Acraman crater, we carried out a detailed UAV magnetometer survey over the previously detected central anomaly in the epicenter.

Quesnel Y.  Rochette P.  Baratoux D.  Niang C. A. B.  Fall M.  Kouame N. L.  Wade S.  Kaire M.  Faye G.

Potential-Field Measurements on the Velingara Candidate Impact Structure (Senegal) [#6163]
This study reports the preliminary results of recent gravity and magnetic field ground surveys on the 40 km diameter Velingara depression in Senegal, a candidate impact structure.

Kletetschka G.  Takáć M.  Karimi K.  Ucar H.  Kavková R.

Demagnetization of Rock as an Evidence of Extraterrestrial Impact (Acraman and Santa Fe Impact Structures) [#6275]
Acraman crater samples’ demagnetization level supports that the demagnetization of rocks that experienced shock from an impact of extraterrestrial body can be used as a unique indicator of extraterrestrial impact.

Belhai D. B.  Belhai H. B.  Sahoui R. S.  Nemer Z. N.  Bayou Y. B.  Belhai A. B.

The Amguid Crater: New Structural and Geophysical Data [#6118]
The Amguid crater is a circular structure which is located in the Mouydir (Central Sahara). This crater has three main macroscopic markers which are associated with microscopic markers which argue in favor of an unmistakable meteorite structure.

 

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Friday, August 19, 2022

SPACE WEATHERING: THE FORECAST CALLS FOR SOLAR WIND AND IMPACTS

9:00 a.m.   Alsh

This session addresses both analytical results from samples from the Moon, Itokawa, and Ryugu and experimental results of space weathering laboratory simulations.

Chairs:  Dara Laczniak and Alexander Kling

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Burgess K. D. *  Cymes B. A.  Stroud R. M.  ANGSA Science Team

Detection of Water and Helium from Solar Wind in Space Weathered Samples [#6081]
Water and He together were detected in vesicles in the space weathered rims of lunar silicates that were frozen after their collection. Non-silicate phases may contain even more H and He.

9:15 a.m.

Kling A. M. *  Greer J.  Thompson M. S.  Heck P. R.

Coordinated TEM and APT Analyses to Understand the Distribution of Solar Wind-Sourced Hydrogen and Water in Space Weathered Lunar Soils [#6332]
We have identified water and hydrogen in the space weathered rims of grains from lunar soil 79221. We present a coordinated approach to identify the relationship between water and microstructural space weathering features across mineral phases.

9:30 a.m.

Greer J. *  Kling A. M.  Isheim D.  Seidman D. N.  Thompson M. S.  Heck P. R.

Nanoscale Analyses of Space Weathered Mature Lunar Soil 79221 [#6303]
We present atom-probe tomography (APT) analyses of mature space weathered Apollo 17 sample Soil 79221 to compare with our previously published data on submature Soil 71501.

9:45 a.m.

Cymes B. A. *  Burgess K. D.  Stroud R. M.

Preservation of Volatiles in Frozen Lunar Samples: Electron Microscopy of ANGSA Samples Prepared by Ultramicrotomy [#6415]
Coordinated electron microscopy and microanalysis of the space weathering features of frozen lunar soil samples demonstrates that cold curation has enhanced volatile retention in the regolith evidenced by the presence of water in vesicles.

10:00 a.m.

Thompson M. S. *  Schrader D. L.  Davidson J.  Zega T. J.

Formation of Fe Whiskers Through Simulated Micrometeoroid Bombardment [#6045]
We performed in situ heating experiments in the TEM with pentlandite and pyrrhotite. Rapid thermal pulses produced Fe-rich whiskers on the surfaces of sulfide grains. Slow step-wise heating led to loss of S and segregation of Fe and Ni in grains.

10:15 a.m.

Chaves L. C. *  Thompson M. S.  Horgan B.  Dukes C. A.  Loeffler M. J.

Space Weathering of Magnetite Simulated by Pulsed Laser and Ion Irradiation Experiments [#6322]
To understand the response of magnetite under space weathering conditions, we simulated micrometeoroid bombardment and solar wind irradiation using pulsed laser and ion irradiation experiments on magnetite pressed pellets.

10:30 a.m.

Mastumoto T. *  Noguchi T.  Igami Y.  Miyake A.  Haruta M.  Min-Pet Fine Sub-Team  Hayabusa2-Initial-Analysis Core

Nano Phase Opaque Minerals in Vapor Deposited Rims Found on Samples from C-Type Asteroid Ryugu [#6112]
Ryugu grains have vapor-deposited rims probably formed by micrometeorite bombardments and solar wind sputtering. The deposited rims include nanophase iron sulfides that could affect the reflectance spectra of Ryugu.

10:45 a.m.

Rubino S. *  Leroux H.  Aléon-Toppani A.  Lantz C.  Baklouti D.  Djouadi Z.  Troadec D.  Borondics F.  Brunetto R.

Analysis of Morphological and Physicochemical Changes in Space-Weathered Hydrated Silicates by Visible/IR Spectroscopy and Electron Transmission Microscopy [#6202]
Investigating changes in spectral signature, morphological structure, and chemical composition of space-weathered hydrated silicates, to provide support for the interpretation of remote sensed data and lab. analysis of materials from Ryugu and Bennu.

11:00 a.m.

 

Break

 

Friday, August 19, 2022

CHONDRITES

9:00 a.m.   Boisdale

A wide range of chondrite types provide a window on early, and not so early, solar system processes.

Chairs:  Richard Greenwood and Romain Tartèse

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Vacher L. G. *  Bonal L.  Beck P.  Rigaudier T.  Flandinet L.

Origin and Abundance of H2O in Ordinary Chondrites [#6284]
We report the bulk [H] and δD value of a suite of low weathered Antarctic and falls ordinary chondrites (OCs) that span the entire range of metamorphic grades to test the influence of thermal metamorphism on the H isotopic variations of OCs.

9:15 a.m.

Grant H. *  Tartèse R.  Jones R. H.  Marrocchi Y.  Piani L.  King A. J.

Bulk Mineralogy, Water Abundance, and H Isotope Composition of Unequilibrated Ordinary Chondrites [#6342]
Unequilibrated ordinary chondrites are some of the most pristine early solar system material. By investigating their mineralogy, water inventory, and hydrogen isotope systematics, we aim to better constrain water transport in the protoplanetary disk.

9:30 a.m.

Ciocco M. *  Roskosz M.  Doisneau B.  Mostefaoui S.  Deloule E.  Gounelle M.

At Least Two Parent Bodies For Shocked L Chondrites [#6075]
Shocked polymorphs are investigated for 7 L chondrites. Silicate polymorphs are used to yield parent body sizes & phosphate polymorphs record the collision ages. We obtain two parent bodies: one 650Ma old & 70km wide, one 150km wide & 470Ma old.

9:45 a.m.

Tartese R. *  Hull R.  Jones R. H.

U-Pb Dating and REE Systematics of Phosphate Minerals in the H4 and H6 Lithologies of the Zag Chondrite [#6257]
U-Pb dating of apatite across H4 and H6 clasts in the brecciated H chondrite Zag yielded a single date of 4516 ± 10 Ma, which we interpret as the timing of brecciation and reaccretion of the H chondrite parent body.

10:00 a.m.

Bodénan J.-D. *  Mannel T.  Mayer L.  Schönbächler M.  Pommerol A.  Capelo H.

How Chondrites and Comets Inform Astrophysical Dust Experiments in Microgravity (TEMPus VoLA And Others) [#6468]
A summary of diversity of dust grains in the early solar system from chondrites and comets can inform astrophysical simulations and experimental setups such as the TEMPus VoLA facility designed for microgravity dust experiments.

10:15 a.m.

Schrader D. L. *  Zega T. J.  Davidson J.  McCoy T. J.  Domanik K. J.

Pentlandite in Chondrites: A Compositional Indicator of Oxygen Fugacity [#6110]
We show that the chemical compositions of pentlandite are related the oxygen fugacity of their formation.

10:30 a.m.

Braukmüller N.  Funk C.  Abouchami W.  Pickard H. J.  Rehkämper M.  Bragagni A.  Galer S.  Münker C.  Becker H.  Wombacher F. *

Moderately Volatile Element Fractionation in Chondrites Constrained by Isotope Dilution and Cd and Zn Stable Isotope Data [#6216]
We present high-precision isotope dilution data for 11 volatile elements (S, Cu, Zn, Ga, Se, Ag, Cd, In, Sn, Te and Tl) and Cd and Zn stable isotope compositions for carbonaceous, ordinary, enstatite and Rumuruti chondrites.

10:45 a.m.

Maeda R. *  Goderis S.  Van Acker T.  Vanhaecke F.  Yamaguchi A.  Debaille V.  Claeys P.

The Effects of Thermal Processing on the Budget of Lithophile Elements in H Chondrites [#6234]
We investigated the lithophile element budgets of both unequilibrated and equilibrated H chondrites using various in-situ techniques such as μXRF, EPMA, LA-ICP-TOF-MS, etc., addressing the effects of thermal metamorphism on their distributions.

11:00 a.m.

 

Break

11:05 a.m.

Tauseef M. *  Hofmann B. A.  Szidat S.  Gattacceca J.  Braucher R.  Leya I.

14C Production Rates and 14C/10Be Production Rate Ratios in Freshly Fallen Meteorites [#6286]
By combining noble gas data to support constancy of 14C and 14C/10Be rate ratios. With an improvement to 14C and 14C/10Be dating systems, this study aims to significantly reduce the systematic uncertainties for terrestrial age (0-50ka) of meteorites.

11:20 a.m.

Sharp T. G. *  Karageozian M. E.  Van Soest M.  McDonald C.

In Situ Ar/Ar Dating of Sjhocked Meteorites: Redistribution of K and Ar and the Source of Late-Release Ages in Step Heating [#6495]
In situ UV laser ablation microprobe argon mass spectrometry data from Mbale illustrate complex behavior of K and Ar during shock. The behavior of K and Ar in shock melt results in anomalously old ages that contribute to older late-release ages.

11:35 a.m.

Ruzicka A. M. *  Hugo R. C.

A Robust Electron Backscatter Diffraction Annealing Metric for Olivine [#6179]
We use EBSD data for olivine in ordinary chondrites to suggest a robust annealing metric that should be generally applicable to assess significant post-deformation annealing.

11:50 a.m.

Sun H. *  Chaussidon M.  Moynier F.

Triple Silicon Isotopic Fractionation Between Silicates and Metal in Enstatite Chondrites [#6324]
Using high precision measurements of triple silicon isotopes to study the mechanism of Si silicate-metal fractionation in Enstatite Chondrites.

12:05 p.m.

Murphy K. T. *  Morino P.  Fehr M. A.  Alosius R. M. L.  Rüfenacht M.  Bischoff A.  Schönbächler M.

Titanium and Chromium Nucleosynthetic Isotope Variations in Samples from the Almahata Sitta Strewnfield [#6416]
Nucleosynthetic isotope variations of 50Ti and 54Cr are used to analyse four chondrites, four ureilites, and a ureilite-related trachyandesite from the Almahata Sitta meteorite to confirm the coexistence of NC and CC material in this meteorite.

12:20 p.m.

Tian S. Y. *  Moynier F.  Inglis E. C.

Zirconium Isotope Compositions of Chondrites, Eucrites and Martian Meteorites [#6491]
To better understand processes occurred during planetary formation and differentiation, bulk meteorites, including chondrites, martian meteorites, eucrites, as well as CAIs from Allende are studied for Zr isotopic composition.

 

Friday, August 19, 2022

MICROMETEORITES AND INTERPLANETARY DUST PARTICLES: COSMOCHEMISTRY, FLUX AND COLLECTION

11:05 a.m.   Alsh

This session presents ongoing analytical and experimental work on micrometeorites and interplanetary dust particles (IDPs) providing new clues on their petrogenesis, geology of their parent bodies, and flux to Earth, as well as new views for the curation and study of present and historical collections.

Chairs:  Flore Van Maldeghem and Maria Valdes

Times

Authors (*Presenter)

Abstract Title and Summary

11:05 a.m.

Joseph R. *  Bose M.  Suttle M. D.  Genge M. J.  Wittmann A.  Ross T.

A Reconnaissance Survey of Micrometeorites from Antarctica [#6513]
Dust sealed in blue ice: / Minerals who share secrets / Of our stellar home.

11:20 a.m.

Van Maldeghem F. *  Soens B.  van Ginneken M.  Maeda R.  Cordier C.  Suttle M.  Folco L.  Yamaguchi A.  Claeys Ph.  Goderis S.

Chromites in Cosmic Spherules: A Unique Perspective on the Extraterrestrial Flux to Earth [#6267]
Triple-oxygen isotope data and microprobe data for chromite grains in cosmic spherules suggest an ordinary chondritic origin. 5 chromite grains have anomalous values, possibly due to alteration during atmospheric entry and terrestrial residence.

11:35 a.m.

Valdes M. C. *  Greer J.  Keating K.  Bresky C.  Johnston A. K.  Willink P.  Peterson S.  Fries M.  Heck P. R.

Micrometeorites Recovered from Lake Michigan, USA [#6493]
We classified six micrometeorite candidates in material dredged from the bottom of Lake Michigan during the Aquarius Project, a collaborative effort to search for fragments of a meteorite that fell into the lake in 2017 off the coast of Wisconsin.

11:50 a.m.

Keller L. P. *  Snead C. J.

Hydrated Interplanetary Dust Particles: Implications for Oxygen Reservoirs in the Outer Solar System [#6506]
We measured SEP track densities, mineralogy, and O isotopic compositions of hydrated IDPs and show that they provide the first direct evidence of a 16O-poor H2O reservoir in the outer solar system.

12:05 p.m.

Schulz B. *  Vollmer C.  Keller L. P.  Hoppe P.

Heterogeneity of Bulk Oxygen Isotopic Compositions in Anhydrous Interplanetary Dust Particles [#6220]
Oxygen isotopic ratios of anhydrous IDPs might span a wide range compared to hydrous ones. We present O isotopic composition of three anhydrous IDPs in context of their mineralogical composition and discuss possible origins of isotopic heterogeneity.

12:20 p.m.

Fries M. D. *

New Initiatives for the NASA Cosmic Dust Collections [#6336]
Updates on current initiatives in the NASA Cosmic Dust Collections, including technology development for oil-free collection, new collections, and recent collection efforts.

 

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Friday, August 19, 2022

MISSIONS AND SMALL BODIES

1:45 p.m.   Alsh

This session explores asteroids as the sources of meteorites and models for the melting and differentiation of planetesimals.

Chairs:  Sam Crossley and Chrysa Avdellidou

Times

Authors (*Presenter)

Abstract Title and Summary

1:45 p.m.

Chabot N. L. *  Rivkin A. S.  Cheng A. F.  Adams E. Y.  Reynolds E. L.  DART Team

DART — The Double Asteroid Redirection Test Mission [#6043]
On September 26, 2022, DART, NASA’s first planetary defense test mission, will intentionally crash into the asteroid Dimorphos. Here we discuss the planetary defense goals and provide the latest status of the mission, with roughly one month to go.

2:00 p.m.

Sharkey B. N. L. *  Reddy V.

Surveying Meteorite Analogs for Earth Quasi-Satellite (469219) Kamo`oalewa [#6096]
We discuss the atypical infrared reflectance properties of Earth quasi-satellite asteroid (469219) Kamo`oalewa, which was previously compared to Apollo soil samples. Here, we discuss new comparisons to spectra of other lunar materials.

2:15 p.m.

MacLennan E. M. *  Granvik M.

Active Asteroid (3200) Phaethon as the Parent Body of Thermally-Altered Carbonaceous Chondrites [#6401]
The emissivity spectrum of (3200) Phaethon matches thermally-altered carbonaceous chondrites, specifically in the so-called “Yamato type”. Evidence of thermal decomposition among these unique meteorites is linked to Phaethon’s perihelion activity.

2:30 p.m.

McGraw A. M. *  Reddy V.  Sanchez J. A.

Do the L Chondrite Meteorites Really Come from the Gefion Asteroid Family? [#6483]
In this work we present the results of a spectroscopic campaign of dynamically-defined members of the Gefion Asteroid Family to test the hypothesis if L- or H ordinary chondrite meteorites come from this family.

2:45 p.m.

Avdellidou C. *  Delbo M.  Morbidelli A.  Walsh K. J.  Munaibari E.  Bourdelle de Micas J.  Devogele M.  Fornasier S.  Gounelle M.  van Belle G.

On the Discovery of the Main Belt Source of the Enstatite Chondrites [#6016]
We discovered the unique source of the rare EL enstatite chondrites, which is the newly discovered inner main belt asteroid family of Athor.

3:00 p.m.

Raducan S. D. *  Jutzi M.  Davison T. M.  Collins G. S.

Impact Formation Models of Metal-Rich Bodies and Implications for Asteroid (16) Psyche [#6405]
We use numerical simulations to explore different formation scenarios for metal-rich asteroids and investigate the crater sizes and morphologies that may be found on such bodies today.

3:15 p.m.

Crossley S. D. *  Righter K.  Simon J. I.

The Onset of Oxidized Differentiation: Sulfide Melting Experiments [#6350]
The initial results of our melting experiments with chondritic sulfides suggest that sulfide liquids may migrate prior to the silicate eutectic in oxidized, sulfur-rich asteroid parent bodies, in contrast to Fe-Ni-S liquids dominated by metal.

3:30 p.m.

Bintang F. M. *  Keller T.  Daly L.

2D Four-Phase Numerical Modelling of the Melting and Differentiation of Planetesimals [#6325]
Sharing the development of a first of its kind, 2D, 4-phase, multiphase fluid dynamics, multi-component thermochemistry numerical model, to model the differentiation of planetesimals.

3:45 p.m.

 

Break

 

Friday, August 19, 2022

REFRACTORY INCLUSIONS: SOME OF THE SOLAR SYSTEM’S HOTTEST OBJECTS

2:00 p.m.   Boisdale

In this session, chemical, mineralogical, and isotopic characteristics recorded in meteoritic refractory inclusions will be discussed to infer the physical and chemical conditions in the solar nebula.

Chairs:  Pierre-Etienne Martin and Imene Kerraouch

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Kerraouch I. *  Bischoff A.  Zolensky M. E.  Trieloff M.  Krot A. N.  Nagashima K.  Vollmer C.  Patzek M.  Ebert S.  Radić D.  Treiman A.  Rubin A. E.

Discovery of Hydrated Clasts with Very High Abundance of Ferromagnesian 16O-Rich Olivine: Inner or Outer Solar System Origin? [#6246]
New clasts showed an extremely 16O-rich signature sampled by FeO-rich olivine. The discovery of such anomalous clasts may shed light on the dynamics and physicochemical processing of the gas and dust that accreted to form the earliest solid objects.

2:15 p.m.

Torrano Z. A. *  Alexander C. M. O’D.  Carlson R. W.  Bullock E. S.

Chromium Isotopic Compositions of Amoeboid Olivine Aggregates from CV3 Chondrites: Implications for Early Solar System Isotopic Reservoirs [#6315]
We analyzed the mass-independent Cr isotopic compositions of 8 AOAs from 4 CV3 chondrites to investigate the relationship between AOAs and other meteorite components and the role of AOAs in the formation of early solar system isotopic reservoirs.

2:30 p.m.

Avice G. *  Marrocchi Y.  Barrat J.-A.  Wolffer A.  Vayrac F.

Noble Gases in Refractory Inclusions from the Northwest Africa 10235 CV3 Chondrite: Searching for Presolar Signatures [#6341]
Noble gases in refractory inclusions of carbonaceous chondrites to search for the presence of presolar grains.

2:45 p.m.

Mendybaev R. A. *  Marrocchi Y.  Savage P. S.  Villeneuve J.

Silicon and Oxygen Isotopic Fractionations During Evaporation of Silicate Melts: Effect of Melt Structure [#6381]
Vacuum evaporation of molten anorthite results in Si isotopic fractionations comparable with those for melilitic and forsteritic melts. No Si and O isotopic fractionation was observed when molten SiO2 was evaporated under the same conditions.

3:00 p.m.

Manga V. R. *  Ramprasad T.  Zega T. J.

Condensation Phase Diagram of Ultra-Refractory Materials Pertaining to the High Temperature Region of Early Solar Protoplanetary Disk [#6527]
Condensation phase diagram of ultra-refractory inclusions that are found in calcium-aluminum-rich inclusions and ameboid olivine aggregates within primitive solids.

3:15 p.m.

Martin P-E. M. C. *  King A. J.  Mitchell J. T.  Stephen N. R.  Trimby P.  Van Ginneken M.  Salge T.  Almeida N. V.  Willcocks F. M.  Daly L.  Lee M. R.

Calcium-Aluminium-rich Inclusion Populations within the Winchcombe CM2 Meteorite Breccia [#6358]
Winchcombe CAIs / Some have spinel, some calcite / Some need more data.

3:30 p.m.

Matsuda N. *  Liu M.-C.  McKeegan K. D.

Petrologic Study of Calcium-Aluminum-Rich Inclusions from Asuka-9003 and 09535 [#6490]
We present results of petrological characterizations of CAIs from a new type of carbonaceous chondrites, Asuka-9003 and 09535.

3:45 p.m.

 

Break

 

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Friday, August 19, 2022

MARS AND ASTROBIOLOGY

3:50 p.m.   Alsh

Mars science relevant to astrobiology

Chairs:  Lydia Hallis and Amanda Ostwald

Times

Authors (*Presenter)

Abstract Title and Summary

3:50 p.m.

Schröder C. *  Ashley J. W.  Tait A. W.

An Overview of Meteorites on Mars and What They Tell Us About Mars [#6448]
More than 50 meteorites have been discovered o Mars. Because the same types of meteorites fall to Earth and Mars, they are standard probes interacting with the martian environment and can be used as tools to study atmosphere-surface interactions.

4:05 p.m.

Paquet M. *  Sossi P.  Moynier F.

Insight into the Volatile Content of Mars from the Zinc Isotopic Composition of SNC Meteorites [#6306]
Martian meteorites provide insights into the composition of Mars, as well as the processes that led to its accretion and differentiation, and in particular, the timing, budget, nature and extent of volatile-depletion during planetary formation.

4:20 p.m.

Christou E. *  Hallis L. J.  Daly L.  Pickersgill A. E.  Lee M. R.

A Pessimistic Perspective on the Habitability of Early Mars: Simulations for the Northwest Africa 8159 Environment [#6486]
We have performed numerical simulations for the thermodynamics and habitability of the ancient NWA 8159 host rock environment on Mars. We concluded that aqueous processes in the NWA 8159 basalt may have not been favourable for microbial life.

4:35 p.m.

Krzesinska A. M. *  Schofield P. F.  Geraki K.  Mosselmans J. F. W.  Michalski J. R.

Trace Elemental Composition of Alteration Minerals in Nakhlites — Source and Nature of Aqueous Fluids [#6191]
Spatial analysis of trace elemental composition of phyllosilicates, carbonates and sulfates in Nakhla and Lafayette suggests that alteration formed in response to several fluid flow episodes and at least one fluid was rich in halogens.

4:50 p.m.

Thomas-Keprta K.  Clemett S. *  Gibson E.  Rahman Z.  Baskar N.  Wentworth S.  Keprta N.  McKay D.

Indigenous Organic Matter Associated with Unusual Low Temperature Aqueous Secondary Phases in the Mars Meteorite Nakhla [#6393]
Our goals are to provide a context to interpret the formation of secondary alteration assemblages within the Mars meteorite Nakhla and determine whether these phases participated in the accumulation and preservation of martian organic matter.

5:05 p.m.

Steele A. *  Benning L. G.  Wirth R.  Schreiber A.  Araki T.  McCubbin F. M.  Fries M. D.  Nittler L. R.  Wang J.  Hallis L. J.  Conrad P. G.  Conley C.  Vitale S.  O’Brien A. C.  Riggi V.  Rogers K.

Allan Hills 84001 and Martian Organic Geochemistry [#6533]
We report organic synthesis via serpentinization and carbonation in the martian meteorite ALH84001. We discuss the implications for martian Organic Geochemistry and the search for life on Mars.

Friday, August 19, 2022

EARLY SOLAR SYSTEM RECORDS

3:50 p.m.   Boisdale

This session presents records from meteorites and observations for understanding the early evolution of protoplanetary reservoirs.

Chairs:  Paul Savage and Katarzyna Liszewska

Times

Authors (*Presenter)

Abstract Title and Summary

3:50 p.m.

Smith R. L. *  Boogert A. C. A.

Evaluation of Oxygen Isotopes in Massive Young Stellar Objects and Implications for Protoplanetary Reservoirs [#6530]
Observations of oxygen in massive YSOs in various evolutionary stages reveal signatures of CO self-shielding in several targets and in one component of a binary system. Overall our results support inheritance of self-shielding from the parent cloud.

4:05 p.m.

Marrocchi Y. *  Morin G. L. F.  Villeneuve J.  Jacquet E.

16O-Rich Anhydrous Silicates in CI Chondrites: Implications for the Nature and Dynamics of Dust in the Solar Accretion Disk [#6027]
We report the rare evidence of extremely 16O-rich (Δ17O < –20‰) olivine and pyroxene grains in CI chondrites. Two of these olivines are characterized by MnO/FeO ~ 1, typical of silicates commonly observed in amoeboid olivine aggregates.

4:20 p.m.

Martins R. *  Kuthning S.  Coles B.  Kreissig K.  Rehkämper M.

Nucleosynthetic Zn Anomalies Reveal the Origin of Earth’s Volatiles [#6143]
Nucleosynthetic Zn isotope anomalies in bulk meteorites suggest that the bulk Earth inventory of Zn was provided by an approximately equal mixture of material derived from the inner and outer solar system.

4:35 p.m.

Savage P. S. *  Moynier F.

Zinc Isotopes in Meteorites Indicate a Low-Mass Core-Collapse Supernova Source to Our Solar System [#6411]
Recently measured Zn isotope anomalies in bulk chondrites can be explained by the addition, to our solar system, of an isotopically exotic component derived from an electron-capture or low-mass core-collapse supernova.

4:50 p.m.

Liszewska K. M. *  Rundhaug C. J.  Hunt A. C.  Schönbächler M.

The Origin of Iron Isotopic Heterogeneity in the Protoplanetary Disk [#6164]
We present mass-independent Fe isotope data to provide a rigorous assessment on a prolonged spatial separation between the outer and inner solar system and evaluate the origin of nucleosynthetic Fe isotope variations in bulk meteorites.

5:05 p.m.

Larsen K. K. *  Schiller M.  Bizzarro M.

The Presolar Heritage of 50Ti and 26Al Heterogeneities in the Solar System’s First Solids and the Protoplanetary Disk [#6396]
We present high-precision titanium isotope data for 26Al-rich and 26Al-poor CAIs in CV and CR chondrites and show that their isotope systematics were inherited from presolar grains. This explains why µ50Ti deficits are coupled to reduced 26Al/27Al.

5:20 p.m.

Schneider J. M. *  Burkhardt C.  Kleine T.

Strontium-84 Homogeneity of the Inner Solar System [#6467]
This new dataset of 35 different samples reveals a homogeneity of nucleosynthetic 84Sr anomalies between NC-meteorites, Earth, Mars, and the Moon. This is difficult to reconcile with thermal processing as the origin for the NC-CC dichotomy.

 

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