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The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars

Mahaffy, P. R. and Webster, C. R. and Stern, J. C. and Brunner, A. E. and Atreya, S. K. and Conrad, P. G. and Domagal-Goldman, S. and Eigenbrode, J. L. and Flesch, G. J. and Christensen, L. E. and Franz, H. B. and Freissinet, C. and Glavin, D.P. and Grotzinger, J. P. and Jones, J. H. and Leshin, L. A. and Malespin, C. and McAdam, A.C. and Ming, D. W. and Navarro-Gonzalez, R. and Niles, P. B. and Owen, T. and Pavlov, A. A. and Steele, A. and Trainer, M. G. and Williford, K. H. and Wray, J. J. and the MSL Science Team and DLR Collaborator (MSL Science Team), Reitz G. (2014) The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars. Science. American Association for the Advancement of Science (AAAS). DOI: 10.1126/science.1260291 ISSN 0036-8075

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Abstract

The deuterium to hydrogen (D/H) ratio in strongly bound water or hydroxyl groups in ancient martian clays retains the imprint of the water of formation of these minerals. Curiosity’s Sample Analysis at Mars (SAM) experiment measured thermally evolved water and hydrogen gas released between 550°C and 950°C from samples of Hesperian era Gale crater smectite to determine this isotope ratio. The D/H value is 3.0 (±0.2) times the ratio in Standard Mean Ocean Water (SMOW). The D/H ratio in this ~3 billion year old mudstone that is half that of the present martian atmosphere but substantially higher than that expected in very early Mars indicates an extended history of hydrogen escape and desiccation of the planet.

Item URL in elib:https://elib.dlr.de/94269/
Document Type:Article
Title:The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mahaffy, P. R.Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt MD 20771, USA; paul.r.mahaffy (at) nasa.govUNSPECIFIED
Webster, C. R.UNSPECIFIEDUNSPECIFIED
Stern, J. C.UNSPECIFIEDUNSPECIFIED
Brunner, A. E.UNSPECIFIEDUNSPECIFIED
Atreya, S. K.UNSPECIFIEDUNSPECIFIED
Conrad, P. G.UNSPECIFIEDUNSPECIFIED
Domagal-Goldman, S.UNSPECIFIEDUNSPECIFIED
Eigenbrode, J. L.UNSPECIFIEDUNSPECIFIED
Flesch, G. J.UNSPECIFIEDUNSPECIFIED
Christensen, L. E.UNSPECIFIEDUNSPECIFIED
Franz, H. B.UNSPECIFIEDUNSPECIFIED
Freissinet, C.UNSPECIFIEDUNSPECIFIED
Glavin, D.P.UNSPECIFIEDUNSPECIFIED
Grotzinger, J. P.UNSPECIFIEDUNSPECIFIED
Jones, J. H.UNSPECIFIEDUNSPECIFIED
Leshin, L. A.UNSPECIFIEDUNSPECIFIED
Malespin, C.UNSPECIFIEDUNSPECIFIED
McAdam, A.C.UNSPECIFIEDUNSPECIFIED
Ming, D. W.UNSPECIFIEDUNSPECIFIED
Navarro-Gonzalez, R.UNSPECIFIEDUNSPECIFIED
Niles, P. B.UNSPECIFIEDUNSPECIFIED
Owen, T.UNSPECIFIEDUNSPECIFIED
Pavlov, A. A.UNSPECIFIEDUNSPECIFIED
Steele, A.UNSPECIFIEDUNSPECIFIED
Trainer, M. G.UNSPECIFIEDUNSPECIFIED
Williford, K. H.UNSPECIFIEDUNSPECIFIED
Wray, J. J. and the MSL Science TeamUNSPECIFIEDUNSPECIFIED
DLR Collaborator (MSL Science Team), Reitz G.Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Date:2014
Journal or Publication Title:Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1126/science.1260291
Publisher:American Association for the Advancement of Science (AAAS)
Series Name:Epub ahead of print
ISSN:0036-8075
Status:Published
Keywords:MSL-Radiation, Mars, D/H ratio, Gale crater
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:13 Jan 2015 14:31
Last Modified:08 Mar 2018 18:51

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