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Astrobiology and Exobiology 2

Monday, March 13, 2023, 2:15 PM
Montgomery Ballroom

Dina Bower
Karena Gill
Chad Pozarycki
2:15 PM
Session Introduction
2:20 PM
Barge L. M.* Weber J. M. Flores E. Fraeman A. A. Martinez E. et al.
Effects of Nitrate, Nitrite, and Ammonia on Amino Acid Formation in Mars-Analog Iron Mineral Systems [#1635]
The presence of nitrate/nitrite in Fe-oxyhydroxide mineral systems affects amino acid formation from pyruvate or glyoxylate.
2:30 PM
Sturrup C. S.* Szynkiewicz A. S.
Evaluating Bulk δ13C and δ15N Values of Acidic Hydrothermal Sediments — Implications for Mars Astrobiology [#2432]
Evaluating what biologic and geologic signatures can be preserved and detected via in-situ bulk carbon and nitrogen isotope analysis on Mars.
2:40 PM
Bower D. M.* McAdam A. C. Yang C. S. C. Hewagama T. Millan M. et al.
Establishing Useful Signatures of Life and Habitability in the "Silent Region" of the Raman Spectrum [#1600]
We explore cyanates with other compounds and minerals to establish their potential as spectroscopically detectable biosignatures on other planetary bodies.
2:50 PM
Fornaro T.* Brucato J. R. Poggiali G. Alberini A. Garcia Florentino C. et al.
3:00 PM
Panel Q&A
3:20 PM
Birmingham M. A.* Lockamy D. Plattner T. A. Weber J. M. Goldstein R. H. et al.
Biosignature Detection in Gypsum Across Varying Environments of Precipitation [#1006]
This project investigates how entrapment of organics in gypsum varies across localities.
3:30 PM
Wallentine W. L.* Lynch K. L. Eggers G. L. Hughes E. B. Wray J. J. et al.
Investigation of Sodium Sulfate Spectra from the Great Salt Lake as a Model for Characterizing Aqueous Geochemistry and Climate History of Martian Paleolakes [#2143]
We look at the spectra of a natural sample of mirabilite, a salt that can form in cold and arid brine lakes, as a way to infer the geochemistry of ancient Mars.
3:40 PM
Gill K. K.* Jagniecki E. A. Benison K. C.
A Mars-Analogue Sulfate, Mirabilite, Traps and Preserves Biological Materials from its Environment in the Great Salt Lake, Utah [#1791]
The Mars-analogue sulfate mirabilite traps and preserves microbial life in primary fluid inclusions and is an important repository of organic materials.
3:50 PM
Baharier B.* Semprich J. Olsson-Francis K. Potter-McIntyre S. L. Crandall J. R. et al.
Terrestrial Aqueously Altered Magmatic Dike Forming Sulfate-Rich Hydrothermal Fluids to Constrain Martian Habitability [#1555]
We investigated the aqueous alteration of a magmatic dike from the San Rafael Swell that intruded sulfate-rich sediments to constrain martian habitability.
4:00 PM
Panel Q&A
4:20 PM
Plattner T. A.* Schmidt B. E. Baldridge A. Weber J. M. Birmingham M. A. et al.
Mapping Mineralogy and Wet/Dry Cycles in Acidic Saline Lakes in Western Australia [#3013]
We show how we mapped the mineralogy in acidic saline lakes in Western Australia lakes using classification images and band indices.
4:30 PM
Pozarycki C. I.* Seaton K. M. Nuñez N. Ingall E. Pontefract A. et al.
“Follow the Salt”: Patterns of Biosignature Preservation and Evapoconcentration in Hypersaline Magnesium Brines [#2680]
This work focuses on analyses of ionically complex brines on Earth, which evapoconcentrate and preserve biosignature molecules.
4:40 PM
Fisher K. R.* Ewing R. C. Sweeney M. Zawaski M. Tice M. M. et al.
Assessing Microbial Mat Erosion Conditions on Earth and Other Planetary Surfaces [#1749]
Aeolian and subaqueous erosion thresholds of microbial mats on Earth was compared and then connected to the modeled abrasiveness of other planetary surfaces.
4:50 PM
Zawaski M. J.* Tice M. Shapiro R. S. Cjaza A. D. Orrill B.
Microbial Mats and Sedimentary Conditions 3.2 Ga in Tidal Deposits from the Moodies Group [#2632]
We found new styles of biosignatures in 3.2-Ga rocks using instruments that are on the Perseverance rover and in analogous rocks as in Mars’ Jezero Crater.
5:00 PM
Panel Q&A
5:20 PM
Session Closure