Dynamics and evolution of a magma ocean

Details Dynamics and evolution of a magma ocean Dynamics and evolution of a magma ocean

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pcmo.work...55s&link_type=abstract

In Lunar and Planetary Inst., Workshop on the Physics and Chemistry of Magma Oceans from 1 Bar to 4 Mbar p 55 (SEE N92-28587 19-

Physics

Geophysics

Earth Planetary Structure, Geochemistry, Geophysics, Impact Melts, Magma, Oceans, Planetary Evolution, Crystallization, Earth Crust, Earth Mantle, Geology

Scientific paper

The prevailing view of very large impacts during earth accretion suggests an initial state for earth evolution that was totally molten or nearly so. The problem confronted is to understand the evolution from this state to an almost completely solidified mantle. Two crucial questions are asked by the author: (1) is the resulting endstate of magma ocean freezing compatible with geological record, inferred mantle structure and evidence from geochemistry; and (2) does the freezing event leave a signature that can be discerned in the present earth. The emphasis on this keynote introduction will be to set the stage for the more detailed analyses to follow and to clarify the crucial questions and uncertainties.

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