Nonfractional crystallization of a terrestrial magma ocean

Details Nonfractional crystallization of a terrestrial magma ocean Nonfractional crystallization of a terrestrial magma ocean

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.5391s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E3, p. 5391-5406.

Physics

24

Crystallization, Earth Mantle, Magma, Planetary Evolution, Convection, Differentiation

Scientific paper

A simple equilibrium thermodynamical model of partial melts based on an ideal three-component phase diagram is presented. This model permits a self-consistent calculation of physical and chemical parameters in the melting range at all pressures of interest. Adiabats of the convecting magma ocean are determined. Suspension in convective layers, rheology of partial melts, crystal size, and surface conditions are crucial and still poorly understood aspects of the problem. An almost completely preserved undifferentiated lower mantle and a possibly significant undifferentiated part of the upper mantle are the most pronounced consequences of the nonfractional crystallization of the magma ocean.

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