Core growth and siderophile element depletion of the mantle during homogeneous earth accretion

Details Core growth and siderophile element depletion of the mantle during homogeneous earth accretion Core growth and siderophile element depletion of the mantle during homogeneous earth accretion

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.2889a&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 57, no. 12, p. 2889-2898.

Computer Science

6

Earth Core, Earth Mantle, Fractionation, Planetary Composition, Planetary Evolution, Chemical Composition, Depletion, Metallicity, Metals, Silicates

Scientific paper

An attempt is made to apply a mass flux approach to the joint problems of earth accretion and core formation. A model based on a homogeneous accretion hypothesis takes into account repeated equilibrium fractionation in a portion of the mantle between solid and liquid silicate and metal phases. Results of the modeling show that most observed values are easily approximated by optimizing just the sum of the solid and liquid metal fractions within each stage. Metal has to be present in both solid and liquid forms, but variations in the solid to liquid ratio do not affect the result much.

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