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Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars.

McLennan, S M and Anderson, R B and Bell, J F and Bridges, J C and Calef, F and Campbell, J L and Clark, B C and Clegg, S and Conrad, P and Cousin, A and Des Marais, D J and Dromart, G and Dyar, M D and Edgar, L A and Ehlmann, B L and Fabre, C and Forni, O and Gasnault, O and Gellert, R and Gordon, S and Grant, J A and Grotzinger, J P and Gupta, S and Herkenhoff, K E and Hurowitz, J A and King, P L and Le Mouélic, S and Leshin, L A and Léveillé, R and Lewis, K W and Mangold, N and Maurice, S and Ming, D W and Morris, R V and Nachon, M and Newsom, H E and Ollila, A M and Perrett, G M and Rice, M S and Schmidt, M E and Schwenzer, S P and Stack, K and Stolper, E M and Sumner, D Y and Treiman, A H and Vanbommel, S and Vaniman, D T and Vasavada, A and Wiens, R C and Yingst, R A and the MSL Science Team and DLR Collaborator, Reitz G (2013) Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars. Science. American Association for the Advancement of Science (AAAS). doi: 10.1126/science.1244734. ISSN 0036-8075.

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Abstract

Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from approximately average Martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved indicating arid, possibly cold, paleoclimates and rapid erosion/deposition. Absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low temperature, circum-neutral pH, rock-dominated aqueous conditions. High spatial resolution analyses of diagenetic features, including concretions, raised ridges and fractures, indicate that they are composed of iron- and halogen-rich components, magnesium-iron-chlorine-rich components, and hydrated calcium-sulfates, respectively. Composition of a cross-cutting dike-like feature is consistent with sedimentary intrusion. Geochemistry of these sedimentary rocks provides further evidence for diverse depositional and diagenetic sedimentary environments during the early history of Mars.

Item URL in elib:https://elib.dlr.de/87325/
Document Type:Article
Title:Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars.
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
McLennan, S MDepartment of Geosciences, State University of New York at Stony Brook, Stony Brook, NY, 11794-2100, USA.UNSPECIFIED
Anderson, R BUNSPECIFIEDUNSPECIFIED
Bell, J FUNSPECIFIEDUNSPECIFIED
Bridges, J CUNSPECIFIEDUNSPECIFIED
Calef, FUNSPECIFIEDUNSPECIFIED
Campbell, J LUNSPECIFIEDUNSPECIFIED
Clark, B CUNSPECIFIEDUNSPECIFIED
Clegg, SUNSPECIFIEDUNSPECIFIED
Conrad, PUNSPECIFIEDUNSPECIFIED
Cousin, AUNSPECIFIEDUNSPECIFIED
Des Marais, D JUNSPECIFIEDUNSPECIFIED
Dromart, GUNSPECIFIEDUNSPECIFIED
Dyar, M DUNSPECIFIEDUNSPECIFIED
Edgar, L AUNSPECIFIEDUNSPECIFIED
Ehlmann, B LUNSPECIFIEDUNSPECIFIED
Fabre, CUNSPECIFIEDUNSPECIFIED
Forni, OUNSPECIFIEDUNSPECIFIED
Gasnault, OUNSPECIFIEDUNSPECIFIED
Gellert, RUNSPECIFIEDUNSPECIFIED
Gordon, SUNSPECIFIEDUNSPECIFIED
Grant, J AUNSPECIFIEDUNSPECIFIED
Grotzinger, J PUNSPECIFIEDUNSPECIFIED
Gupta, SUNSPECIFIEDUNSPECIFIED
Herkenhoff, K EUNSPECIFIEDUNSPECIFIED
Hurowitz, J AUNSPECIFIEDUNSPECIFIED
King, P LUNSPECIFIEDUNSPECIFIED
Le Mouélic, SUNSPECIFIEDUNSPECIFIED
Leshin, L AUNSPECIFIEDUNSPECIFIED
Léveillé, RUNSPECIFIEDUNSPECIFIED
Lewis, K WUNSPECIFIEDUNSPECIFIED
Mangold, NUNSPECIFIEDUNSPECIFIED
Maurice, SUNSPECIFIEDUNSPECIFIED
Ming, D WUNSPECIFIEDUNSPECIFIED
Morris, R VUNSPECIFIEDUNSPECIFIED
Nachon, MUNSPECIFIEDUNSPECIFIED
Newsom, H EUNSPECIFIEDUNSPECIFIED
Ollila, A MUNSPECIFIEDUNSPECIFIED
Perrett, G MUNSPECIFIEDUNSPECIFIED
Rice, M SUNSPECIFIEDUNSPECIFIED
Schmidt, M EUNSPECIFIEDUNSPECIFIED
Schwenzer, S PUNSPECIFIEDUNSPECIFIED
Stack, KUNSPECIFIEDUNSPECIFIED
Stolper, E MUNSPECIFIEDUNSPECIFIED
Sumner, D YUNSPECIFIEDUNSPECIFIED
Treiman, A HUNSPECIFIEDUNSPECIFIED
Vanbommel, SUNSPECIFIEDUNSPECIFIED
Vaniman, D TUNSPECIFIEDUNSPECIFIED
Vasavada, AUNSPECIFIEDUNSPECIFIED
Wiens, R CUNSPECIFIEDUNSPECIFIED
Yingst, R A and the MSL Science TeamUNSPECIFIEDUNSPECIFIED
DLR Collaborator, Reitz GRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Date:2013
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.1244734
Publisher:American Association for the Advancement of Science (AAAS)
Series Name:Epub ahead of print (in Press)
ISSN:0036-8075
Status:Published
Keywords:Mars, MSL, Curiosity rover, Geochemistry of sedimentary rocks
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Vorhaben MSL-Radiation (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:23 Jan 2014 09:53
Last Modified:08 Mar 2018 18:51

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