Derivation of primary magmas and melting of crustal materials on Venus - Some preliminary petrogenetic considerations

Details Derivation of primary magmas and melting of crustal materials on Venus - Some preliminary petrogenetic considerations Derivation of primary magmas and melting of crustal materials on Venus - Some preliminary petrogenetic considerations

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990em%26p...50...57h&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 50-51, July-Dec. 1990, p. 57-80.

Computer Science

37

Magma, Melting, Petrology, Planetary Crusts, Planetary Evolution, Venus Surface, Geochemistry, Pioneer Venus Spacecraft, Venus Atmosphere

Scientific paper

As an aid to understanding crustal formation and evolution processes on Venus, a general paradigm is developed for the derivation of primary magmas, and the range of possibilities of conditions for remelting of crustal materials and the evolution of the products of remelting. The present knowledge of the bulk and surface composition is used as a basis. A wide range of magma types is possible for the range of conditions of derivation of primary magmas and crustal remelting and no magma type can be arbitrarily excluded from consideration on Venus. The composition of Venus and the nature of source materials for melting, the melting of mantle material peridotites, and the melting of basalts including tholeiites and modified basalts are discussed. Magmatic differentiation is considered, and a comparison to terrestrial magmatic environments is conducted. It is concluded the magnetic and volcanic activity on Venus could be very similar to that on the earth, although eruption styles are expected to vary due to environmental conditions.

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