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Aqueous alteration processes in Jezero crater, Mars—implications for organic geochemistry
California Institute of Technology, USA; Massachusetts Institute of Technology, USA.
RISE Research Institutes of Sweden, Material och produktion, Metodik för produktframtagning.ORCID-id: 0000-0002-4975-6074
Instituto Nacional de Tecnica Aeroespacial, Spain.
Rekke forfattare: 662022 (engelsk)Inngår i: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 378, nr 6624, s. 1105-1110Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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. 

sted, utgiver, år, opplag, sider
American Association for the Advancement of Science , 2022. Vol. 378, nr 6624, s. 1105-1110
Emneord [en]
aromatic compound, carbonic acid, carbonic acid derivative, iron, magnesium, mineral, perchlorate, phosphate, sulfate, water, crater, fluorescence spectroscopy, igneous rock, instrumentation, Mars, organic geochemistry, Raman spectroscopy, aqueous solution, Article, astronomy, chemical composition, chemical modification, chemical reaction, concentration (parameter), evidence based practice, fluorescence analysis, geochemistry, high temperature, hydration, low temperature, oxidation, precipitation, Raman spectrometry, rock, synthesis
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Identifikatorer
URN: urn:nbn:se:ri:diva-62575DOI: 10.1126/science.abo5204Scopus ID: 2-s2.0-85143644607OAI: oai:DiVA.org:ri-62575DiVA, id: diva2:1729416
Tilgjengelig fra: 2023-01-20 Laget: 2023-01-20 Sist oppdatert: 2023-06-07bibliografisk kontrollert

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