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dc.contributor.authorSchmidt, Mariek Een_UK
dc.contributor.authorFarrand, William Hen_UK
dc.contributor.authorJohnson, Jeffrey Ren_UK
dc.contributor.authorSchröder, Christianen_UK
dc.contributor.authorHurowitz, Joel Aen_UK
dc.contributor.authorMcCoy, Timothy Jen_UK
dc.contributor.authorRuff, Steven Wen_UK
dc.contributor.authorArvidson, Raymond Een_UK
dc.contributor.authorDesMarais, David Jen_UK
dc.contributor.authorLewis, Kevin Wen_UK
dc.contributor.authorMing, Douglas Wayneen_UK
dc.contributor.authorSquyres, Steven Wen_UK
dc.contributor.authorde Souza Jr, Paulo Aen_UK
dc.description.abstractOver the last ~3 years in Gusev Crater, Mars, the Spirit rover observed coherent variations in color, mineralogy, and geochemistry across Home Plate, an ~80 m-diameter outcrop of basaltic tephra. Observations of Home Plate from orbit and from the summit of Husband Hill reveal clear differences in visible/near-infrared (VNIR) colors between its eastern and western regions that are consistent with mineralogical compositions indicated by Mössbauer spectrometer (MB) and by Miniature Thermal Emission Spectrometer (Mini-TES). Pyroxene and magnetite dominate the east side, while olivine, nanophase Fe oxide (npOx) and glass are more abundant on the western side. Alpha Particle X-Ray Spectrometer (APXS) observations reveal that eastern Home Plate has higher Si/Mg, Al, Zn, Ni, and K, while Cl and Br are higher in the west. We propose that these variations are the result of two distinct alteration regimes that may or may not be temporally related: a localized, higher temperature recrystallization and alteration of the east side of Home Plate and lower temperature alteration of the western side that produced npOx.en_UK
dc.relationSchmidt ME, Farrand WH, Johnson JR, Schröder C, Hurowitz JA, McCoy TJ, Ruff SW, Arvidson RE, DesMarais DJ, Lewis KW, Ming DW, Squyres SW & de Souza Jr PA (2009) Spectral, mineralogical, and geochemical variations across Home Plate, Gusev Crater, Mars indicate high and low temperature alteration. Earth and Planetary Science Letters, 281 (3-4), pp. 258-266.
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.subjectMars geologyen_UK
dc.subjectGusev Crateren_UK
dc.subjecthydrothermal alterationen_UK
dc.titleSpectral, mineralogical, and geochemical variations across Home Plate, Gusev Crater, Mars indicate high and low temperature alterationen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Schmidt2009_spectral-mineralogical-and_geochemical_variations_across_home_plate.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.citation.jtitleEarth and Planetary Science Lettersen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.affiliationSpace Science Instituteen_UK
dc.contributor.affiliationU.S. Geological Surveyen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationCalifornia Institute of Technologyen_UK
dc.contributor.affiliationArizona State Universityen_UK
dc.contributor.affiliationWashington University In Saint Louisen_UK
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)en_UK
dc.contributor.affiliationCalifornia Institute of Technologyen_UK
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)en_UK
dc.contributor.affiliationCornell Universityen_UK
dc.contributor.affiliationUniversity of Tasmaniaen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorSchmidt, Mariek E|en_UK
local.rioxx.authorFarrand, William H|en_UK
local.rioxx.authorJohnson, Jeffrey R|en_UK
local.rioxx.authorSchröder, Christian|0000-0002-7935-6039en_UK
local.rioxx.authorHurowitz, Joel A|en_UK
local.rioxx.authorMcCoy, Timothy J|en_UK
local.rioxx.authorRuff, Steven W|en_UK
local.rioxx.authorArvidson, Raymond E|en_UK
local.rioxx.authorDesMarais, David J|en_UK
local.rioxx.authorLewis, Kevin W|en_UK
local.rioxx.authorMing, Douglas Wayne|en_UK
local.rioxx.authorSquyres, Steven W|en_UK
local.rioxx.authorde Souza Jr, Paulo A|en_UK
local.rioxx.projectInternal Project|University of Stirling|
Appears in Collections:Biological and Environmental Sciences Journal Articles

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