Volatile compounds in shergottite and nakhlite meteorites

Details Volatile compounds in shergottite and nakhlite meteorites Volatile compounds in shergottite and nakhlite meteorites

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990metic..25..281g&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 25, Dec. 1990, p. 281-289. Research supported by NASA.

Computer Science

20

Abundance, Meteoritic Composition, Volatility, Carbonates, Chlorine, Mass Spectroscopy, Pyrolysis, Sulfur, Weathering

Scientific paper

Shergottites ALHA77005, EETA79001, and Shergotty, and the nakhlite Nakhla are all found to contain oxidized sulfur (sulfate) of preterrestrial origin, In EETA79001, which is composed of three different lithologies, the degree of sulfur oxidation increased from A to C. Significant bulk carbonate was confirmed in Nakhla and trace carbonate was confirmed for EETA79001, all of which seems to be preterrestrial in origin. Chlorine in shergottites and Nakhla is found to covary with oxidized sulfur, whereas carbonate and sulfate are related inversely. Sulfate and carbonate in shergottites and Nakhla were probably formed by aqueous geochemistry in a highly oxidizing environment sometime near the late-stage histories of the rocks that are now represented as meteorites.

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