Volatile and organic compositions of sedimentary rocks in Yellowknife Bay, Gale Crater, Mars

D.W. Ming, P.D. Archer Jr., D.P. Glavin, J.L. Eigenbrode, H.B. Franz, B. Sutter, A.E. Brunner, J.C. Stern, C. Freissinet, A.C. McAdam, P.R. Mahaffy, M. Cabane, P. Coll, J.L. Campbell, S.K. Atreya, P.B. Niles, J.F. Bell III, D.L. Bish, W.B. Brinckerhoff, A. BuchP.G. Conrad, D.J. Des Marais, B.L. Ehlmann, A.G. Fairén, K. Farley, G.J. Flesch, P. Francois, R. Gellert, J.A. Grant, J.P. Grotzinger, S. Gupta, K.E. Herkenhoff, J.A. Hurowitz, L.A. Leshin, K.W. Lewis, S.M. McLennan, K.E. Miller, J. Moersch, R.V. Morris, R. Navarro-González, A.A. Pavlov, G.M. Perrett, I. Pradler, S.W. Squyres, R.E. Summons, A. Steele, E.M. Stolper, D.Y. Sumner, C. Szopa, S. Teinturier, M.G. Trainer, A.H. Treiman, D.T. Vaniman, A.R. Vasavada, C.R. Webster, J.J. Wray, R.A. Yingst, the MSL Science Team

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

H2O, CO2, SO2, O2, H2, H2S, HCl, chlorinated hydrocarbons, NO, and other trace gases were
evolved during pyrolysis of two mudstone samples acquired by the Curiosity rover at Yellowknife
Bay within Gale crater, Mars. H2O/OH-bearing phases included 2:1 phyllosilicate(s), bassanite,
akaganeite, and amorphous materials. Thermal decomposition of carbonates and combustion of
organic materials are candidate sources for the CO2. Concurrent evolution of O2 and chlorinated
hydrocarbons suggests the presence of oxychlorine phase(s). Sulfides are likely sources for
sulfur-bearing species. Higher abundances of chlorinated hydrocarbons in the mudstone compared
with Rocknest windblown materials previously analyzed by Curiosity suggest that indigenous
martian or meteoritic organic carbon sources may be preserved in the mudstone; however, the
carbon source for the chlorinated hydrocarbons is not definitively of martian origin.
Original languageEnglish
Article number1245267
Pages (from-to)1-9
Number of pages9
JournalScience
Volume343
Issue number6169
DOIs
Publication statusPublished - 2014

Bibliographical note

Art. No.: 1245267

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