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dc.contributor.authorArvidson, R. E.
dc.contributor.authorSquyres, S. W.
dc.contributor.authorBell, J. F.
dc.contributor.authorCatalano, J. G.
dc.contributor.authorClark, B. C.
dc.contributor.authorCrumpler, L. S.
dc.contributor.authorde Souza, P. A.
dc.contributor.authorFairen, A. G.
dc.contributor.authorFarrand, W. H.
dc.contributor.authorFox, V. K.
dc.contributor.authorGellert, R.
dc.contributor.authorGhosh, A.
dc.contributor.authorGolombek, M. P.
dc.contributor.authorGrotzinger, J. P.
dc.contributor.authorGuinness, E. A.
dc.contributor.authorHerkenhoff, K. E.
dc.contributor.authorJolliff, B. L.
dc.contributor.authorKnoll, Andrew Herbert
dc.contributor.authorLi, R.
dc.contributor.authorMcLennan, S. M.
dc.contributor.authorMing, D. W.
dc.contributor.authorMittlefehldt, D. W.
dc.contributor.authorMoore, J. M.
dc.contributor.authorMorris, R. V.
dc.contributor.authorMurchie, S. L.
dc.contributor.authorParker, T. J.
dc.contributor.authorPaulsen, G.
dc.contributor.authorRice, J. W.
dc.contributor.authorRuff, S. W.
dc.contributor.authorSmith, M. D.
dc.contributor.authorWolff, M. J.
dc.date.accessioned2014-06-17T15:53:30Z
dc.date.issued2014
dc.identifier.citationArvidson, R. E., S. W. Squyres, J. F. Bell, J. G. Catalano, B. C. Clark, L. S. Crumpler, P. A. de Souza, et al. 2014. Ancient Aqueous Environments at Endeavour Crater, Mars. Science 343, no. 6169: 1248097.en_US
dc.identifier.issn0036-8075en_US
dc.identifier.issn1095-9203en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:12330889
dc.description.abstractOpportunity has investigated in detail rocks on the rim of the Noachian age Endeavour crater, where orbital spectral reflectance signatures indicate the presence of Fe+3-rich smectites. The signatures are associated with fine-grained, layered rocks containing spherules of diagenetic or impact origin. The layered rocks are overlain by breccias, and both units are cut by calcium sulfate veins precipitated from fluids that circulated after the Endeavour impact. Compositional data for fractures in the layered rocks suggest formation of Al-rich smectites by aqueous leaching. Evidence is thus preserved for water-rock interactions before and after the impact, with aqueous environments of slightly acidic to circum-neutral pH that would have been more favorable for prebiotic chemistry and microorganisms than those recorded by younger sulfate-rich rocks at Meridiani Planum.en_US
dc.description.sponsorshipEarth and Planetary Sciencesen_US
dc.description.sponsorshipOrganismic and Evolutionary Biologyen_US
dc.language.isoen_USen_US
dc.publisherAmerican Association for the Advancement of Science (AAAS)en_US
dc.relation.isversionofdoi:10.1126/science.1248097en_US
dc.relation.hasversionhttp://www.astro.cornell.edu/academics/courses/astro2202/arvidsonetal2014.pdfen_US
dash.licenseLAA
dc.titleAncient Aqueous Environments at Endeavour Crater, Marsen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalScienceen_US
dash.depositing.authorKnoll, Andrew Herbert
dash.waiver2013-12-03
dc.date.available2014-06-17T15:53:30Z
dc.identifier.doi10.1126/science.1248097*
workflow.legacycommentsFAR 2014en_US
dash.authorsorderedfalse
dash.contributor.affiliatedKnoll, Andrew


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