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

 

9:00 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

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

9:00 a.m.   Lomond Auditorium

Meteoritical Society medals and awards

Chairs:  Brigitte Zanda

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Zanda B. *

Opening Remarks

9:10 a.m.

 

Citation and Acceptance for Kevin McKeegan for the 2022 Leonard Medal

9:20 a.m.

 

Citation and Acceptance for Gordon Osinski for the 2021 Barringer Award

9:35 a.m.

 

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

9:50 a.m.

 

Citation and Acceptance for Arya Udry for the 2022 Nier Prize

10:00 a.m.

 

Citation and Acceptance for Randy Korotev for the 2022 Service Medal

10:10 a.m.

Zanda B.  Trieloff M. *

Introduction of the Jessberger Award

10:20 a.m.

 

Citation and Acceptance for Maria Schönbächler for the 2021 Jessberger Award

10:30 a.m.

 

Presentation of the 2022 Fellows

10:55 a.m.

McKeegan K. *

Leonard 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:  Melinda Hutson and Jemma Davidson

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 Monica Grady

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.