Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/17130
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dc.contributor.authorMorris, Richard Van-
dc.contributor.authorKlingelhoefer, Goestar-
dc.contributor.authorSchröder, Christian-
dc.contributor.authorFleischer, Iris-
dc.contributor.authorMing, Douglas Wayne-
dc.contributor.authorYen, Albert S-
dc.contributor.authorGellert, Ralf-
dc.contributor.authorArvidson, Raymond E-
dc.contributor.authorRodionov, Daniel S-
dc.contributor.authorCrumpler, Larry S-
dc.contributor.authorClark, Benton C-
dc.contributor.authorCohen, Barbara A-
dc.contributor.authorMcCoy, Timothy J-
dc.contributor.authorMittlefehldt, David W-
dc.contributor.authorSchmidt, Mariek E-
dc.contributor.authorde, Souza Jr Paulo A-
dc.contributor.authorSquyres, Steven W-
dc.date.accessioned2016-10-03T21:20:45Z-
dc.date.available2016-10-03T21:20:45Z-
dc.date.issued2008-12-23-
dc.identifier.otherE12S42-
dc.identifier.urihttp://hdl.handle.net/1893/17130-
dc.description.abstractSpirit’s Mössbauer (MB) instrument determined the Fe mineralogy and oxidation state of 71 rocks and 43 soils during its exploration of the Gusev plains and the Columbia Hills (West Spur, Husband Hill, Haskin Ridge, northern Inner Basin, and Home Plate) on Mars. The plains are predominantly float rocks and soil derived from olivine basalts. Outcrops at West Spur and on Husband Hill have experienced pervasive aqueous alteration as indicated by the presence of goethite. Olivine-rich outcrops in a possible mafic/ultramafic horizon are present on Haskin Ridge. Relatively unaltered basalt and olivine basalt float rocks occur at isolated locations throughout the Columbia Hills. Basalt and olivine basalt outcrops are found at and near Home Plate, a putative hydrovolcanic structure. At least three pyroxene compositions are indicated by MB data. MB spectra of outcrops Barnhill and Torquas resemble palagonitic material and thus possible supergene aqueous alteration. Deposits of Fe 3+-sulfate soil, located at Paso Robles, Arad, and Tyrone, are likely products of acid sulfate fumarolic and/or hydrothermal activity, possibly in connection with Home Plate volcanism. Hematite-rich outcrops between Home Plate and Tyrone (e.g., Montalva) may also be products of this aqueous activity. Low water-to-rock ratios (isochemical alteration) are implied during palagonite, goethite, and hematite formation because bulk chemical compositions are basaltic (SO3-free basis). High water-to-rock ratios (leaching) under acid sulfate conditions are implied for the high-SiO2 rock and soil in Eastern Valley and the float rock FuzzySmith, which has possible pyrite/marcasite as a hydrothermal alteration product.en_UK
dc.language.isoen-
dc.publisherAmerican Geophysical Union-
dc.relationMorris RV, Klingelhoefer G, Schröder C, Fleischer I, Ming DW, Yen AS, Gellert R, Arvidson RE, Rodionov DS, Crumpler LS, Clark BC, Cohen BA, McCoy TJ, Mittlefehldt DW, Schmidt ME, de Souza Jr PA & Squyres SW (2008) Iron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mössbauer instrument on the Spirit Mars Exploration Rover, Journal of Geophysical Research: Planets, 113 (E12), Art. No.: E12S42.-
dc.rightsCopyright 2008 by the American Geophysical Union. AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU.-
dc.subjectMarsen_UK
dc.subjectmineralogyen_UK
dc.subjectweatheringen_UK
dc.titleIron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mössbauer instrument on the Spirit Mars Exploration Roveren_UK
dc.typeJournal Articleen_UK
dc.identifier.doihttp://dx.doi.org/10.1029/2008JE003201-
dc.citation.jtitleJournal of Geophysical Research: Planets-
dc.citation.issn2169-9097-
dc.citation.volume113-
dc.citation.issueE12-
dc.citation.publicationstatusPublished-
dc.citation.peerreviewedRefereed-
dc.type.statusPublisher version (final published refereed version)-
dc.author.emailchristian.schroeder@stir.ac.uk-
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)-
dc.contributor.affiliationJohannes Gutenberg University of Mainz-
dc.contributor.affiliationBiological and Environmental Sciences-
dc.contributor.affiliationJohannes Gutenberg University of Mainz-
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)-
dc.contributor.affiliationCalifornia Institute of Technology-
dc.contributor.affiliationUniversity of Guelph-
dc.contributor.affiliationWashington University In Saint Louis-
dc.contributor.affiliationJohannes Gutenberg University of Mainz-
dc.contributor.affiliationNew Mexico Museum of Natural History and Science-
dc.contributor.affiliationLockheed Martin Corporation-
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)-
dc.contributor.affiliationSmithsonian-
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)-
dc.contributor.affiliationSmithsonian-
dc.contributor.affiliationUniversity of Tasmania-
dc.contributor.affiliationCornell University-
dc.identifier.isi000262043500001-
Appears in Collections:Biological and Environmental Sciences Journal Articles

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