Computer Science
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981geokh......803t&link_type=abstract
Geokhimiia, June 1981, p. 803-808. In Russian.
Computer Science
Abundance, Atmospheric Composition, Earth Atmosphere, Mars Atmosphere, Planetology, Venus Atmosphere, Carbonaceous Meteorites, Enstatite, Outgassing, Planetary Evolution, Rare Gases
Scientific paper
A simple explanation is proposed for the observed decrease in atmospheric original planetary gases from Venus to the earth to Mars. Based on considerations of the rare gas compositions of the carbonaceous and enstatite chondrites, which are similar to the original accreting planets, it is proposed that the abundances of planetary original rare gases can be accounted for by the process of inhomogeneous planetary accretion, with the more rare-gas-rich minerals appearing predominantly near the orbit of Venus. Heterogeneous accretion rates are also invoked to explain differences in the atmospheric evolutions of the three planets, as the earlier-formed and thus more volatile-rich Venus material experienced a greater extent of outgassing than the earth or Mars.
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