Journal
SCIENCE
Volume 341, Issue 6153, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1239505
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Funding
- NASA Mars Science Laboratory Mission
- Danish Council for Independent Research/Natural Sciences (Det Frie Forskningsrad Natur og Univers FNU) [12-127126, 11-107019]
- Deutsche Forschungsgemeinschaft (DFG) [GO 2288/1-1]
- NASA
- UK Space Agency [ST/I003118/1, ST/J005193/1, ST/J005339/1] Funding Source: researchfish
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The Rocknest aeolian deposit is similar to aeolian features analyzed by the Mars Exploration Rovers (MERs) Spirit and Opportunity. The fraction of sand <150 micrometers in size contains similar to 55% crystalline material consistent with a basaltic heritage and similar to 45% x-ray amorphous material. The amorphous component of Rocknest is iron-rich and silicon-poor and is the host of the volatiles (water, oxygen, sulfur dioxide, carbon dioxide, and chlorine) detected by the Sample Analysis at Mars instrument and of the fine-grained nanophase oxide component first described from basaltic soils analyzed by MERs. The similarity between soils and aeolian materials analyzed at Gusev Crater, Meridiani Planum, and Gale Crater implies locally sourced, globally similar basaltic materials or globally and regionally sourced basaltic components deposited locally at all three locations.
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