Venus rocks petrogenesis as constrained by K, U and Th data

Details Venus rocks petrogenesis as constrained by K, U and Th data Venus rocks petrogenesis as constrained by K, U and Th data

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1025n&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 025.

Other

Venus Surface, Rocks, Petrogenesis, Potassium, Uranium, Thorium, Basalt, Crystallization, Magma

Scientific paper

Relative to Earth's N-MORB, all of four K-U-Th measured basaltic rocks of Venus are moderately enriched in all of these incompatible elements and similar to each other, but differ from the highly enriched Venera 8 material, in their U-to-K trend. The K-U-Th pattern for the Venera 8 material might be controlled by 1-2 percent partial melting of eclogitic N-MORB-like tholeite. But the Venus basalts could be produced by neither crystallization of N-MORB-type magma, nor contamination of that magma by the Venera 8 material, nor batch partial melting of eclogitic N-MORB-like tholeite or primitive mantle. This suggests an unusual composition of the basalt source(s) and/or unusual fractionation process(es) on Venus.

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