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. 2022 Dec 9;378(6624):1105-1110.
doi: 10.1126/science.abo5204. Epub 2022 Nov 23.

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

Eva L Scheller #  1   2 Joseph Razzell Hollis #  3   4 Emily L Cardarelli  3 Andrew Steele  5 Luther W Beegle  3 Rohit Bhartia  6 Pamela Conrad  5 Kyle Uckert  3 Sunanda Sharma  3 Bethany L Ehlmann  1   3 William J Abbey  3 Sanford A Asher  7 Kathleen C Benison  8 Eve L Berger  9   10   11 Olivier Beyssac  12 Benjamin L Bleefeld  13 Tanja Bosak  2 Adrian J Brown  14 Aaron S Burton  11 Sergei V Bykov  7 Ed Cloutis  15 Alberto G Fairén  16   17 Lauren DeFlores  3 Kenneth A Farley  1 Deidra M Fey  13 Teresa Fornaro  18 Allison C Fox  11 Marc Fries  11 Keyron Hickman-Lewis  19   20 William F Hug  6 Joshua E Huggett  13 Samara Imbeah  13 Ryan S Jakubek  11 Linda C Kah  21 Peter Kelemen  22 Megan R Kennedy  13 Tanya Kizovski  23 Carina Lee  24 Yang Liu  3 Lucia Mandon  25 Francis M McCubbin  11 Kelsey R Moore  3 Brian E Nixon  13 Jorge I Núñez  26 Carolina Rodriguez Sanchez-Vahamonde  13 Ryan D Roppel  7 Mitchell Schulte  27 Mark A Sephton  28 Shiv K Sharma  29 Sandra Siljeström  30 Svetlana Shkolyar  31   32 David L Shuster  33 Justin I Simon  11 Rebecca J Smith  34 Kathryn M Stack  3 Kim Steadman  3 Benjamin P Weiss  2 Alyssa Werynski  13 Amy J Williams  35 Roger C Wiens  36   37 Kenneth H Williford  3   38 Kathrine Winchell  13 Brittan Wogsland  21 Anastasia Yanchilina  39 Rachel Yingling  13 Maria-Paz Zorzano  16
Affiliations

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

Eva L Scheller et al. Science. .

Abstract

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.

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