The role of vaporization and dissipation processes in the formation of the moon

Details The role of vaporization and dissipation processes in the formation of the moon The role of vaporization and dissipation processes in the formation of the moon

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987geokh......467i&link_type=abstract

Geokhimiia (ISSN 0016-7525), April 1987, p. 467-482. In Russian.

Computer Science

Moon, Vaporization, Origin, Formation, Dissipation, Composition, Melts, Planetesimals, Collisions, Bombardment, Temperature, Mass, Parameters, Models, Theoretical Studies, Alkalies, Magnesium, Silica, Sulfur, Iron, Calculations

Scientific paper

The experimental data of Markova et al. (1986) on the changing compositions of basalt and lherzolite melts and complementary vapors after heating at progressively increasing temperatures are compared with the compositions of the earth and lunar mantles to determine the role of selective vaporization and vapor dissipation in the formation of the moon. The cause for the paucity in volatile components seen in the lunar mantle, as compared with the earth mantle, is explained in the framework of a mechanism involving impact evaporation and selective dissipation of vapor at the stage of lunar accretion, when collisions in the swarm of bodies in earth orbit and the bombardment of lunar planetesimals took place. This mechanism explains the cause of the deficit on the moon of heavy volatile elements (such as Pb and Rb), K and Na oxides, MgO, and SiO2, and the lack of a deficit of less volatile Al2O3 and FeO.

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