Show simple item record

dc.contributor.authorBristow, Thomas F.
dc.contributor.authorRampe, Elizabeth B.
dc.contributor.authorAchilles, Cherie N.
dc.contributor.authorBlake, David F.
dc.contributor.authorChipera, Steve J.
dc.contributor.authorCraig, Patricia
dc.contributor.authorCrisp, Joy A.
dc.contributor.authorDes Marais, David J.
dc.contributor.authorDowns, Robert T.
dc.contributor.authorGellert, Ralf
dc.contributor.authorGrotzinger, John P.
dc.contributor.authorGupta, Sanjeev
dc.contributor.authorHazen, Robert M.
dc.contributor.authorHorgan, Briony
dc.contributor.authorHogancamp, Joanna V.
dc.contributor.authorMangold, Nicolas
dc.contributor.authorMahaffy, Paul R.
dc.contributor.authorMcAdam, Amy C.
dc.contributor.authorMing, Doug W.
dc.contributor.authorMorookian, John Michael
dc.contributor.authorMorris, Richard V.
dc.contributor.authorMorrison, Shaunna M.
dc.contributor.authorTreiman, Allan H.
dc.contributor.authorVaniman, David T.
dc.contributor.authorVasavada, Ashwin R.
dc.contributor.authorYen, Albert S.
dc.date.accessioned2018-12-20T19:29:24Z
dc.date.available2018-12-20T19:29:24Z
dc.date.issued2018-06
dc.identifier.citationF. Bristow, Thomas & Rampe, Elizabeth & N. Achilles, Cherie & F. Blake, David & Chipera, Steve & Craig, Patricia & A. Crisp, Joy & Desmarais, David & T. Downs, Robert & Gellert, Ralf & P. Grotzinger, John & Gupta, Sanjeev & Hazen, Robert & Horgan, Briony & V. Hogancamp, Joanna & Mangold, Nicolas & Mahaffy, P & Mcadam, Amy & W. Ming, Doug & S. Yen, Albert. (2018). Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars. Science Advances. 4. eaar3330. 10.1126/sciadv.aar3330.en_US
dc.identifier.issn2375-2548
dc.identifier.pmid29881776
dc.identifier.doi10.1126/sciadv.aar3330
dc.identifier.urihttp://hdl.handle.net/10150/631230
dc.description.abstractClay minerals provide indicators of the evolution of aqueous conditions and possible habitats for life on ancient Mars. Analyses by the Mars Science Laboratory rover Curiosity show that similar to 3.5-billion year (Ga) fluvio-lacustrine mudstones in Gale crater contain up to similar to 28 weight % (wt %) clay minerals. We demonstrate that the species of clay minerals deduced from x-ray diffraction and evolved gas analysis show a strong paleoenvironmental dependency. While perennial lake mudstones are characterized by Fe-saponite, we find that stratigraphic intervals associated with episodic lake drying contain Al-rich, Fe3+-bearing dioctahedral smectite, with minor (3 wt %) quantities of ferripyrophyllite, interpreted as wind-blown detritus, found in candidate aeolian deposits. Our results suggest that dioctahedral smectite formed via near-surface chemical weathering driven by fluctuations in lake level and atmospheric infiltration, a process leading to the redistribution of nutrients and potentially influencing the cycling of gases that help regulate climate.en_US
dc.description.sponsorshipUK Space Agency (UKSA) [ST/J005169/1, ST/N000579/1]; Centre National d'Etudes Spatial (CNES); NASA's MSL Participating Scientist programen_US
dc.language.isoenen_US
dc.publisherAMER ASSOC ADVANCEMENT SCIENCEen_US
dc.relation.urlhttp://advances.sciencemag.org/lookup/doi/10.1126/sciadv.aar3330en_US
dc.rightsCopyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).en_US
dc.titleClay mineral diversity and abundance in sedimentary rocks of Gale crater, Marsen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Geoscien_US
dc.identifier.journalSCIENCE ADVANCESen_US
dc.description.noteOpen access journal.en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleScience Advances
dc.source.volume4
dc.source.issue6
dc.source.beginpageeaar3330
refterms.dateFOA2018-12-20T19:29:24Z


Files in this item

Thumbnail
Name:
eaar3330.full.pdf
Size:
506.2Kb
Format:
PDF
Description:
Final Published version

This item appears in the following Collection(s)

Show simple item record