Aqueous alteration processes in Jezero crater, Mars—implications for organic geochemistry
Eva L. Scheller(California Institute of Technology), Joseph Razzell Hollis(Jet Propulsion Laboratory), Emily Cardarelli(Jet Propulsion Laboratory), A. Steele(Carnegie Institution for Science), L. W. Beegle(Jet Propulsion Laboratory), R. Bhartia(Photon Systems (United States)), P. G. Conrad(Carnegie Institution for Science), Kyle Uckert(Jet Propulsion Laboratory), Sunanda Sharma(University of Hawaiʻi at Mānoa), B. L. Ehlmann(California Institute of Technology), William Abbey(Jet Propulsion Laboratory), Sanford A. Asher(University of Pittsburgh), Kathleen C. Benison(West Virginia University), E. L. Berger(Texas State University), Olivier Beyssac(Sorbonne Université), Benjamin L. Bleefeld(Malin Space Science Systems (United States)), Tanja Bosak(Massachusetts Institute of Technology), A. J. Brown(Plan International), Aaron S. Burton(Johnson Space Center), Sergei V. Bykov(University of Pittsburgh), E. A. Cloutis(University of Winnipeg), Alberto González Fairén(Cornell University), Lauren DeFlores(Jet Propulsion Laboratory), Kenneth A. Farley(California Institute of Technology), Deidra M. Fey(Malin Space Science Systems (United States)), Teresa Fornaro(Arcetri Astrophysical Observatory), Allison C. Fox(Johnson Space Center), M. Fries(Johnson Space Center), Keyron Hickman‐Lewis(Natural History Museum), William F. Hug(Photon Systems (United States)), Joshua Huggett(Malin Space Science Systems (United States)), Samara Imbeah(Malin Space Science Systems (United States)), Ryan S. Jakubek(Johnson Space Center), Linda C. Kah(University of Tennessee at Knoxville), P. B. Kelemen(Lamont-Doherty Earth Observatory), M. R. Kennedy(Malin Space Science Systems (United States)), T. V. Kizovski(Brock University), Carina Lee(Universities Space Research Association), Yang Liu(Jet Propulsion Laboratory), Lucia Mandon(Université Paris Cité), F. M. McCubbin(Johnson Space Center), Kelsey R. Moore(Jet Propulsion Laboratory), Brian Nixon(Malin Space Science Systems (United States)), Jorge I. Núñez(Johns Hopkins University Applied Physics Laboratory), Carolina Rodriguez Sánchez-Vahamonde(Malin Space Science Systems (United States)), Ryan D. Roppel(University of Pittsburgh), M. Schulte, Mark A. Sephton(Imperial College London), Shiv K. Sharma(University of Hawaiʻi at Mānoa), Sandra Siljeström(RISE Research Institutes of Sweden), Svetlana Shkolyar(Goddard Space Flight Center), David L. Shuster(Planetary Science Institute), Justin I. Simon(Johnson Space Center), R. J. Smith(Stony Brook University), K. M. Stack(Jet Propulsion Laboratory), Kim Steadman(Jet Propulsion Laboratory), B. P. Weiss(Massachusetts Institute of Technology), Alyssa Werynski(Malin Space Science Systems (United States)), Amy J. Williams(University of Florida), R. C. Wiens(Los Alamos National Laboratory), Kenneth H. Williford(Jet Propulsion Laboratory), K. Winchell(Malin Space Science Systems (United States)), Brittan Wogsland(University of Tennessee at Knoxville), Anastasia Yanchilina, Rachel Yingling(Malin Space Science Systems (United States)), María‐Paz Zorzano(Centro de Astrobiología)
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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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