Evidence for a Deep Terrestrial Magma Ocean: Prediction of Siderophile Element Metal/Silicate Partition Coefficients at P, T, fO2 and Metallic and Silicate Melt Composition

Details Evidence for a Deep Terrestrial Magma Ocean: Prediction of Siderophile Element Metal/Silicate Partition Coefficients at P, T, fO2 and Metallic and Silicate Melt Composition Evidence for a Deep Terrestrial Magma Ocean: Prediction of Siderophile Element Metal/Silicate Partition Coefficients at P, T, fO2 and Metallic and Silicate Melt Composition

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1075r&link_type=abstract

Lunar and Planetary Science, volume 27, page 1075

Computer Science

Cores: Formation, Magma Ocean, Metal, Partition Coefficients, Siderophile Elements

Scientific paper

Expressions of the form, lnD(M) = a lnfO2 + b/T + cP/T + d(ln(1-XS)) + e(nbo/t) + f, have been derived to predict D(M) (where D is a metal/silicate partition coefficient and M = Ni, Co, Mo, W and P) as a function of P, T, fO2, and silicate and metallic melt composition (nbo/t and XS, respectively). Earth's upper mantle abundances of Ni, Co, Mo, W and P can be reconciled with simple metal-silicate equilibrium at P-T conditions near the upper/lower mantle interface (27 GPa, 2200 K, delta IW = -0.15, X(sub)S = 0.15 and nbo/t = 2.7), in a magma ocean.

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