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Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars

Freissinet, C. and Glavin, D. P. and Mahaffy, P. R. and Miller, K. E. and Eigenbrode, J. L. and Summons, R. E. and Brunner, A. E. and Buch, A. and Szopa, C. and Archer, P. D. and Franz, H. B. and Atreya, S. K. and Brinckerhoff, W. B. and Cabane, M. and Coll, P. and Conrad, P. G. and Des Marais, D. J. and Dworkin, J. P. and Fairén, A. G. and François, P. and Grotzinger, J. P. and Kashyap, S. and ten Kate, I. L. and Leshin, L. A. and Malespin, C. A. and Martin, M. G. and Martin-Torres, F. J. and McAdam, A. C. and Ming, D. W. and Navarro-González, R. and Pavlov, A. A. and Prats, B. D. and Squyres, S. W. and Steele, A. and Stern, J. C. and Sumner, D. Y. and Sutter, B. and Zorzano, M.-P. and the MSL Science Team and DLR Collaborator, Reitz G. (2015) Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars. JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 120 (3), pp. 495-514. Wiley. DOI: 10.1002/2014JE004737 ISSN 2169-9097

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1002/2014JE004737

Abstract

The Sample Analysis at Mars (SAM) instrument on board the Mars Science Laboratory Curiosity rover is designed to conduct inorganic and organic chemical analyses of the atmosphere and the surface regolith and rocks to help evaluate the past and present habitability potential of Mars at Gale Crater. Central to this task is the development of an inventory of any organic molecules present to elucidate processes associated with their origin, diagenesis, concentration, and long-term preservation. This will guide the future search for biosignatures. Here we report the definitive identification of chlorobenzene (150–300 parts per billion by weight (ppbw)) and C2 to C4 dichloroalkanes (up to 70 ppbw) with the SAM gas chromatograph mass spectrometer (GCMS) and detection of chlorobenzene in the direct evolved gas analysis (EGA) mode, in multiple portions of the fines from the Cumberland drill hole in the Sheepbed mudstone at Yellowknife Bay. When combined with GCMS and EGA data from multiple scooped and drilled samples, blank runs, and supporting laboratory analog studies, the elevated levels of chlorobenzene and the dichloroalkanes cannot be solely explained by instrument background sources known to be present in SAM. We conclude that these chlorinated hydrocarbons are the reaction products of Martian chlorine and organic carbon derived from Martian sources (e.g., igneous, hydrothermal, atmospheric, or biological) or exogenous sources such as meteorites, comets, or interplanetary dust particles.

Item URL in elib:https://elib.dlr.de/99571/
Document Type:Article
Title:Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Freissinet, C.Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA and NASA Postdoctoral Program, Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA; caroline.freissinet (at) nasa.govUNSPECIFIED
Glavin, D. P.UNSPECIFIEDUNSPECIFIED
Mahaffy, P. R.paul.r.mahaffy (at) nasa.govUNSPECIFIED
Miller, K. E.UNSPECIFIEDUNSPECIFIED
Eigenbrode, J. L.UNSPECIFIEDUNSPECIFIED
Summons, R. E.UNSPECIFIEDUNSPECIFIED
Brunner, A. E.UNSPECIFIEDUNSPECIFIED
Buch, A.UNSPECIFIEDUNSPECIFIED
Szopa, C.UNSPECIFIEDUNSPECIFIED
Archer, P. D.UNSPECIFIEDUNSPECIFIED
Franz, H. B.UNSPECIFIEDUNSPECIFIED
Atreya, S. K.UNSPECIFIEDUNSPECIFIED
Brinckerhoff, W. B.UNSPECIFIEDUNSPECIFIED
Cabane, M.UNSPECIFIEDUNSPECIFIED
Coll, P.UNSPECIFIEDUNSPECIFIED
Conrad, P. G.UNSPECIFIEDUNSPECIFIED
Des Marais, D. J.UNSPECIFIEDUNSPECIFIED
Dworkin, J. P.UNSPECIFIEDUNSPECIFIED
Fairén, A. G.UNSPECIFIEDUNSPECIFIED
François, P.UNSPECIFIEDUNSPECIFIED
Grotzinger, J. P.UNSPECIFIEDUNSPECIFIED
Kashyap, S.UNSPECIFIEDUNSPECIFIED
ten Kate, I. L.UNSPECIFIEDUNSPECIFIED
Leshin, L. A.UNSPECIFIEDUNSPECIFIED
Malespin, C. A.UNSPECIFIEDUNSPECIFIED
Martin, M. G.UNSPECIFIEDUNSPECIFIED
Martin-Torres, F. J.UNSPECIFIEDUNSPECIFIED
McAdam, A. C.UNSPECIFIEDUNSPECIFIED
Ming, D. W.UNSPECIFIEDUNSPECIFIED
Navarro-González, R.UNSPECIFIEDUNSPECIFIED
Pavlov, A. A.UNSPECIFIEDUNSPECIFIED
Prats, B. D.UNSPECIFIEDUNSPECIFIED
Squyres, S. W.UNSPECIFIEDUNSPECIFIED
Steele, A.UNSPECIFIEDUNSPECIFIED
Stern, J. C.UNSPECIFIEDUNSPECIFIED
Sumner, D. Y.UNSPECIFIEDUNSPECIFIED
Sutter, B.UNSPECIFIEDUNSPECIFIED
Zorzano, M.-P. and the MSL Science TeamUNSPECIFIEDUNSPECIFIED
DLR Collaborator, Reitz G.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Date:2015
Journal or Publication Title:JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:120
DOI :10.1002/2014JE004737
Page Range:pp. 495-514
Publisher:Wiley
ISSN:2169-9097
Status:Published
Keywords:Mars Science Laboratory, Curiosity rover, Mars, Gale Crater, organic molecules
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben MSL-Radiation
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:26 Nov 2015 15:20
Last Modified:08 Mar 2018 18:35

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