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Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover
Department of Earth and Environmental Science and School of Science, Rensselaer Polytechnic Institute, Troy, New York.
Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt, Maryland.
Jet Propulsion Laboratory, California Institute of Technology, Pasadena.
LATMOS, UPMC Université Paris 06, Université Versailles St-Quentin, UMR CNRS 8970.
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Number of Authors: 36
2013 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 341, no 6153, article id 1238937Article in journal (Refereed) Published
Abstract [en]

Samples from the Rocknest aeolian deposit were heated to ~835°C under helium flow and evolved gases analyzed by Curiosity’s Sample Analysis at Mars instrument suite. H2O, SO2, CO2, and O2 were the major gases released. Water abundance (1.5 to 3 weight percent) and release temperature suggest that H2O is bound within an amorphous component of the sample. Decomposition of fine-grained Fe or Mg carbonate is the likely source of much of the evolved CO2. Evolved O2 is coincident with the release of Cl, suggesting that oxygen is produced from thermal decomposition of an oxychloride compound. Elevated δD values are consistent with recent atmospheric exchange. Carbon isotopes indicate multiple carbon sources in the fines. Several simple organic compounds were detected, but they are not definitively martian in origin.

Place, publisher, year, edition, pages
2013. Vol. 341, no 6153, article id 1238937
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-6806DOI: 10.1126/science.1238937PubMedID: 24072926Scopus ID: 84885641974Local ID: 51980372-9db4-4d4e-942a-2ef6ea453befOAI: oai:DiVA.org:ltu-6806DiVA: diva2:979692
Note

Upprättat; 2013; Bibliografisk uppgift: Javier Martín-Torres ingår i the MSL Science Team; 20150320 (ninhul)

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

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