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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
5702
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pubmed:dateCreated |
2004-12-3
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pubmed:abstractText |
The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surface lag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples are common. Underlying the thin soil layer, and exposed within small impact craters and troughs, are flat-lying sedimentary rocks. These rocks are finely laminated, are rich in sulfur, and contain abundant sulfate salts. Small-scale cross-lamination in some locations provides evidence for deposition in flowing liquid water. We interpret the rocks to be a mixture of chemical and siliciclastic sediments formed by episodic inundation by shallow surface water, followed by evaporation, exposure, and desiccation. Hematite-rich spherules are embedded in the rock and eroding from them. We interpret these spherules to be concretions formed by postdepositional diagenesis, again involving liquid water.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
1095-9203
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pubmed:author |
pubmed-author:ArvidsonR ERE,
pubmed-author:BellJ FJF3rd,
pubmed-author:BrücknerJJ,
pubmed-author:CabrolN ANA,
pubmed-author:CalvinWW,
pubmed-author:CarrM HMH,
pubmed-author:ChristensenP RPR,
pubmed-author:ClarkB CBC,
pubmed-author:CrumplerLL,
pubmed-author:EconomouTT,
pubmed-author:FAYE LEL,
pubmed-author:FarmerJJ,
pubmed-author:FarrandWW,
pubmed-author:FolknerWW,
pubmed-author:GolombekMM,
pubmed-author:GorevanSS,
pubmed-author:GrantJ AJA,
pubmed-author:GreeleyRR,
pubmed-author:GrotzingerJJ,
pubmed-author:HaskinLL,
pubmed-author:HerkenhoffK EKE,
pubmed-author:HviidSS,
pubmed-author:JohnsonJJ,
pubmed-author:KlingelhöferGG,
pubmed-author:KnollA HAH,
pubmed-author:LandinBB,
pubmed-author:LemmonMM,
pubmed-author:MadsenM BMB,
pubmed-author:MalinM CMC,
pubmed-author:MaraisD J DesDJ,
pubmed-author:McLennanS MSM,
pubmed-author:McSweenH YHY,
pubmed-author:MimsD HDH,
pubmed-author:MoerschJJ,
pubmed-author:MorrisR VRV,
pubmed-author:ParkerTT,
pubmed-author:RichterLL,
pubmed-author:RiederRR,
pubmed-author:SIMEJ TJT,
pubmed-author:SimsMM,
pubmed-author:SmithMM,
pubmed-author:SmithPP,
pubmed-author:SoderblomL ALA,
pubmed-author:SquyresS WSW,
pubmed-author:SullivanRR,
pubmed-author:WänkeHH,
pubmed-author:WdowiakTT,
pubmed-author:WolffMM,
pubmed-author:YenAA,
pubmed-author:d'UstonCC
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pubmed:issnType |
Electronic
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pubmed:day |
3
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pubmed:volume |
306
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1698-703
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pubmed:dateRevised |
2007-3-19
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pubmed:meshHeading |
pubmed-meshheading:15576602-Atmosphere,
pubmed-meshheading:15576602-Evolution, Planetary,
pubmed-meshheading:15576602-Extraterrestrial Environment,
pubmed-meshheading:15576602-Ferric Compounds,
pubmed-meshheading:15576602-Geologic Sediments,
pubmed-meshheading:15576602-Mars,
pubmed-meshheading:15576602-Minerals,
pubmed-meshheading:15576602-Silicates,
pubmed-meshheading:15576602-Spacecraft,
pubmed-meshheading:15576602-Water,
pubmed-meshheading:15576602-Wind
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pubmed:year |
2004
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pubmed:articleTitle |
The Opportunity Rover's Athena science investigation at Meridiani Planum, Mars.
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pubmed:affiliation |
Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA. squyres@astro.cornell.edu
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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