Computer Science
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988e%26psl..90...65k&link_type=abstract
Earth and Planetary Science Letters, Volume 90, Issue 1, p. 65-68.
Computer Science
49
Scientific paper
Partition coefficients for some key elements between MgSiO3 perovskite and liquid have been obtained via direct measurements of compositions of coexisting crystals and liquid at 24.5 GPa and 2300°C in a modified chondritic bulk composition. The results confirm our earlier work [1] in showing that the MgSiO3 perovskite-liquid distribution coefficients for Sc, Zr and Hf are substantially greater than unity whilst those for Ca and Sm are substantially smaller than unity. These results, in conjunction with the observed composition of the upper mantle contradict hypotheses which maintain that the Earth's mantle has experienced gross differentiation controlled by the fractionation of MgSiO3 perovskite.
Irifune Tetsuo
Kato Taichi
Ringwood A. E.
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