Elemental geochemistry of sedimentary rocks at Yellowknife Bay, Gale Crater, Mars

McLennan, S. M., Anderson, R. B., Bell III, J. F., Bridges, J. C., Calef III, F., Campbell, J. L., Clark, B. C., Clegg, S., Conrad, P., Cousin, A., Des Marais, D. J., Dromart, G., Dyar, M. D., Edgar, L. A., Ehlmann, B. L., Fabre, C., Forni, O., Gasnault, O., Gellert, R., Gordon, S., Grant, J. A., Grotzinger, J. P., Gupta, S., Herkenhoff, K. E., Hurowitz, J. A., King, P. L., Le Mouélic, S., Leshin, L. A., Léveillé, R., Lewis, K. W., Mangold, N., Maurice, S., Ming, D. W., Morris, R. V., Nachon, M., Newsom, H. E., Ollila, A. M., Perrett, G. M., Rice, M. S., Schmidt, M. E., Schwenzer, S. P., Stack, K., Stolper, E. M., Sumner, D. Y., Treiman, A. H., VanBommel, S., Vaniman, D. T., Vasavada, A., Wiens, R. C., Yingst, R. A., MSL Science Team and Vasconcelos, Paulo (2013) Elemental geochemistry of sedimentary rocks at Yellowknife Bay, Gale Crater, Mars. Science, ScienceXpress 1244734.1-1244734.15. doi:10.1126/science.1244734

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Author McLennan, S. M.
Anderson, R. B.
Bell III, J. F.
Bridges, J. C.
Calef III, F.
Campbell, J. L.
Clark, B. C.
Clegg, S.
Conrad, P.
Cousin, A.
Des Marais, D. J.
Dromart, G.
Dyar, M. D.
Edgar, L. A.
Ehlmann, B. L.
Fabre, C.
Forni, O.
Gasnault, O.
Gellert, R.
Gordon, S.
Grant, J. A.
Grotzinger, J. P.
Gupta, S.
Herkenhoff, K. E.
Hurowitz, J. A.
King, P. L.
Le Mouélic, S.
Leshin, L. A.
Léveillé, R.
Lewis, K. W.
Mangold, N.
Maurice, S.
Ming, D. W.
Morris, R. V.
Nachon, M.
Newsom, H. E.
Ollila, A. M.
Perrett, G. M.
Rice, M. S.
Schmidt, M. E.
Schwenzer, S. P.
Stack, K.
Stolper, E. M.
Sumner, D. Y.
Treiman, A. H.
VanBommel, S.
Vaniman, D. T.
Vasavada, A.
Wiens, R. C.
Yingst, R. A.
MSL Science Team
Vasconcelos, Paulo
Title Elemental geochemistry of sedimentary rocks at Yellowknife Bay, Gale Crater, Mars
Journal name Science   Check publisher's open access policy
ISSN 0036-8075
Publication date 2013-12-09
Year available 2013
Sub-type Article (original research)
DOI 10.1126/science.1244734
Open Access Status Not yet assessed
Volume ScienceXpress
Start page 1244734.1
End page 1244734.15
Total pages 15
Place of publication Washington, DC, United States
Publisher American Association for the Advancement of Science
Language eng
Formatted 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.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online December 9 2013.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 126 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 130 times in Scopus Article | Citations
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Created: Thu, 19 Dec 2013, 22:39:12 EST by Jon Swabey on behalf of School of Earth Sciences