Soil mineralogy and chemistry on Mars - Possible clues from salts and clays in SNC meteorites

Details Soil mineralogy and chemistry on Mars - Possible clues from salts and clays in SNC meteorites Soil mineralogy and chemistry on Mars - Possible clues from salts and clays in SNC meteorites

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...99...28g&link_type=abstract

Icarus (ISSN 0019-1035), vol. 99, no. 1, p. 28-41.

Mathematics

Logic

100

Clays, Geochemistry, Mars Surface, Meteoritic Composition, Mineralogy, Salts, Soils, Chassignites, Nakhlites, Planetary Composition, Planetary Geology, Shergottites

Scientific paper

If the shergottite, nakhlite, and chassignite (SNC) meteorites' parent planet is Mars, then the aqueous precipitates found in them imply that oxidizing, water-based solutions may have been chemically active on that planet over the past 200-1300 million yrs. It is suggested that the mixture of aqueous precipitates found in the SNCs furnish a self-consistent model for the bulk elemental composition of surface sediments at the Viking Lander sites. Further mineralogical and stable-isotope studies of the secondary minerals may establish the limits for biological activity over the last 1300 million years of Mars' water-based chemistry.

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