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dc.contributor.authorKnoll, Andrew Hen_UK
dc.contributor.authorCarr, Michael Hen_UK
dc.contributor.authorClark, Benton Cen_UK
dc.contributor.authorDesMarais, David Jen_UK
dc.contributor.authorFarmer, Jacken_UK
dc.contributor.authorFischer, Woodward Wen_UK
dc.contributor.authorGrotzinger, Johnen_UK
dc.contributor.authorMcLennan, Scott Men_UK
dc.contributor.authorMalin, Michael Cen_UK
dc.contributor.authorSchröder, Christianen_UK
dc.contributor.authorSquyres, Steven Wen_UK
dc.contributor.authorTosca, Nicholas Jen_UK
dc.contributor.authorWdowiak, Thomas Jen_UK
dc.description.abstractSedimentary rocks exposed in the Meridiani Planum region of Mars record aqueous and eolian deposition in ancient dune and interdune playa-like environments that were arid, acidic, and oxidizing. On Earth, microbial populations have repeatedly adapted to low pH and both episodic and chronic water limitation, suggesting that, to a first approximation, the Meridiani plain may have been habitable during at least part of the interval when deposition and early diagenesis took place. On the other hand, the environmental conditions inferred for Meridiani deposition would have posed a challenge for prebiotic chemical reactions thought to have played a role in the origin of life on Earth. Orbital observations suggest that the combination of sulfate minerals and hematite found in Meridiani rocks may be unusual on the martian surface; however, there is reason to believe that acidity, aridity, and oxidizing conditions were broadly distributed on ancient Mars. When these conditions were established and how much environmental heterogeneity existed on early Mars remain to be determined. Because sulfates and iron oxides can preserve detailed geochemical records of environmental history as well as chemical, textural and microfossil signatures of biological activity, Meridiani Planum is an attractive candidate for Mars sample return.en_UK
dc.relationKnoll AH, Carr MH, Clark BC, DesMarais DJ, Farmer J, Fischer WW, Grotzinger J, McLennan SM, Malin MC, Schröder C, Squyres SW, Tosca NJ & Wdowiak TJ (2005) An astrobiological perspective on Meridiani Planum. Earth and Planetary Science Letters, 240 (1), pp. 179-189.
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.subjectMeridiani Planumen_UK
dc.subjectenvironmental historyen_UK
dc.titleAn astrobiological perspective on Meridiani Planumen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Knoll2005_an_astrobiological_perspective_on_meridiani_planum.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.affiliationHarvard Universityen_UK
dc.contributor.affiliationU.S. Geological Surveyen_UK
dc.contributor.affiliationLockheed Martin Corporationen_UK
dc.contributor.affiliationNational Aeronautics and Space Administration (NASA)en_UK
dc.contributor.affiliationArizona State Universityen_UK
dc.contributor.affiliationHarvard Universityen_UK
dc.contributor.affiliationMassachusetts Institute of Technologyen_UK
dc.contributor.affiliationState University of New York At Stony Brooken_UK
dc.contributor.affiliationMalin Space Science Systemsen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationCornell Universityen_UK
dc.contributor.affiliationState University of New York At Stony Brooken_UK
dc.contributor.affiliationUniversity of Alabama at Birminghamen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorKnoll, Andrew H|en_UK
local.rioxx.authorCarr, Michael H|en_UK
local.rioxx.authorClark, Benton C|en_UK
local.rioxx.authorDesMarais, David J|en_UK
local.rioxx.authorFarmer, Jack|en_UK
local.rioxx.authorFischer, Woodward W|en_UK
local.rioxx.authorGrotzinger, John|en_UK
local.rioxx.authorMcLennan, Scott M|en_UK
local.rioxx.authorMalin, Michael C|en_UK
local.rioxx.authorSchröder, Christian|0000-0002-7935-6039en_UK
local.rioxx.authorSquyres, Steven W|en_UK
local.rioxx.authorTosca, Nicholas J|en_UK
local.rioxx.authorWdowiak, Thomas J|en_UK
local.rioxx.projectInternal Project|University of Stirling|
Appears in Collections:Biological and Environmental Sciences Journal Articles

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