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Volatile and organic compositions of sedimentary rocks in Yellowknife Bay, Gale Crater, Mars
Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston.
Jacobs Technology, NASA Johnson Space Center.
Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland.
Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland.
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Number of Authors: 59
2014 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 343, no 6169, article id 1245267Article in journal (Refereed) Published
Abstract [en]

H2O, CO2, SO2, O2, H2, H2S, HCl, chlorinated hydrocarbons, NO, and other trace gases were evolved during pyrolysis of two mudstone samples acquired by the Curiosity rover at Yellowknife Bay within Gale crater, Mars. H2O/OH-bearing phases included 2:1 phyllosilicate(s), bassanite, akaganeite, and amorphous materials. Thermal decomposition of carbonates and combustion of organic materials are candidate sources for the CO2. Concurrent evolution of O2 and chlorinated hydrocarbons suggests the presence of oxychlorine phase(s). Sulfides are likely sources for sulfur-bearing species. Higher abundances of chlorinated hydrocarbons in the mudstone compared with Rocknest windblown materials previously analyzed by Curiosity suggest that indigenous martian or meteoritic organic carbon sources may be preserved in the mudstone; however, the carbon source for the chlorinated hydrocarbons is not definitively of martian origin.

Place, publisher, year, edition, pages
2014. Vol. 343, no 6169, article id 1245267
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-7169DOI: 10.1126/science.1245267Scopus ID: 84892934706Local ID: 57e4faaa-bb26-4f72-aaa1-e4b0f39258d0OAI: oai:DiVA.org:ltu-7169DiVA: diva2:980057
Note

Upprättat; 2014; Bibliografisk uppgift: Javier Martín-Torres ingår i the MSL Science Team.; 20150227 (ninhul)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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