Aqueous alteration processes in Jezero crater, Mars-implications for organic geochemistry

The Perseverance rover landed in Jezero crater, Mars, in February 2021. We used the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) instrument to perform deep-ultraviolet Raman and fluorescence spectroscopy of three rocks within the crater. We identif...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2022-12, Vol.378 (6624), p.1105-1110
Hauptverfasser:	Scheller, Eva L, Razzell Hollis, Joseph, Cardarelli, Emily L, Steele, Andrew, Beegle, Luther W, Bhartia, Rohit, Conrad, Pamela, Uckert, Kyle, Sharma, Sunanda, Ehlmann, Bethany L, Abbey, William J, Asher, Sanford A, Benison, Kathleen C, Berger, Eve L, Beyssac, Olivier, Bleefeld, Benjamin L, Bosak, Tanja, Brown, Adrian J, Burton, Aaron S, Bykov, Sergei V, Cloutis, Ed, Fairén, Alberto G, DeFlores, Lauren, Farley, Kenneth A, Fey, Deidra M, Fornaro, Teresa, Fox, Allison C, Fries, Marc, Hickman-Lewis, Keyron, Hug, William F, Huggett, Joshua E, Imbeah, Samara, Jakubek, Ryan S, Kah, Linda C, Kelemen, Peter, Kennedy, Megan R, Kizovski, Tanya, Lee, Carina, Liu, Yang, Mandon, Lucia, McCubbin, Francis M, Moore, Kelsey R, Nixon, Brian E, Núñez, Jorge I, Rodriguez Sanchez-Vahamonde, Carolina, Roppel, Ryan D, Schulte, Mitchell, Sephton, Mark A, Sharma, Shiv K, Siljeström, Sandra, Shkolyar, Svetlana, Shuster, David L, Simon, Justin I, Smith, Rebecca J, Stack, Kathryn M, Steadman, Kim, Weiss, Benjamin P, Werynski, Alyssa, Williams, Amy J, Wiens, Roger C, Williford, Kenneth H, Winchell, Kathrine, Wogsland, Brittan, Yanchilina, Anastasia, Yingling, Rachel, Zorzano, Maria-Paz
Format:	Artikel
Sprache:	eng
Schlagworte:	aqueous solution aromatic compound Aromatic compounds astronomy Benzene Carbonates carbonic acid carbonic acid derivative chemical composition chemical modification chemical reaction concentration (parameter) crater evidence based practice fluorescence analysis Fluorescence spectroscopy Geochemistry high temperature hydration igneous rock Igneous rocks instrumentation iron low temperature magnesium Mars Mars craters Mars rovers mineral Organic chemistry organic geochemistry oxidation perchlorate Perchlorates phosphate precipitation Raman spectrometry Raman spectroscopy rock sulfate synthesis Water
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Zusammenfassung:	The Perseverance rover landed in Jezero crater, Mars, in February 2021. We used the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) instrument to perform deep-ultraviolet Raman and fluorescence spectroscopy of three rocks within the crater. We identify evidence for two distinct ancient aqueous environments at different times. Reactions with liquid water formed carbonates in an olivine-rich igneous rock. A sulfate-perchlorate mixture is present in the rocks, which probably formed by later modifications of the rocks by brine. Fluorescence signatures consistent with aromatic organic compounds occur throughout these rocks and are preserved in minerals related to both aqueous environments.
ISSN:	0036-8075 1095-9203 1095-9203
DOI:	10.1126/science.abo5204