Martian soil component in impact glasses in a Martian meteorite

Details Martian soil component in impact glasses in a Martian meteorite Martian soil component in impact glasses in a Martian meteorite

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.3265r&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 21, p. 3265-3268

Physics

26

Geochemistry: Planetary Geochemistry, Mineralogy And Petrology: Meteorites, Planetology: Solar System Objects: Mars

Scientific paper

Chemical compositions of impact melt glass veins, called Lithology C (Lith C) in Martian meteorite EET79001 were determined by electron microprobe analysis. A large enrichment of S, and significant enrichments of Al, Ca, and Na were observed in Lith C glass compared to Lithology A (Lith A). The S enrichment is due to mixing of plagioclase- enriched Lith. A material with Martian soil, either prior to or during impact on Mars. A mixture of 87% Lith A, 7% plagioclase, and 6% Martian soil reproduces the average elemental abundances observed in Lith C. Shock melting of such a mixture of plagioclase-enriched, fine-grained Lith A host rock and Martian soil could yield large excesses of S (observed in this study) and Martian atmospheric noble gases (found by Bogard et al., 1983) in Lith C. These mixing proportions can be used to constrain the elemental abundance of phosphorus in Martian soil.

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