Constraints on element partition coefficients between MgSiO3 perovskite and liquid determined by direct measurements

Takumi Kato, A. E. Ringwood, T. Irifune

研究成果: ジャーナルへの寄稿記事

70 引用 (Scopus)

抄録

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.

元の言語英語
ページ(範囲)65-68
ページ数4
ジャーナルEarth and Planetary Science Letters
90
発行部数1
DOI
出版物ステータス出版済み - 1 1 1988

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perovskite
partition coefficient
partitions
liquid
unity
Earth mantle
Liquids
coefficients
liquids
Chemical analysis
Liquid Crystals
Fractionation
fractionation
upper mantle
Earth (planet)
crystal
mantle
crystals

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences (miscellaneous)
  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

これを引用

Constraints on element partition coefficients between MgSiO3 perovskite and liquid determined by direct measurements. / Kato, Takumi; Ringwood, A. E.; Irifune, T.

:: Earth and Planetary Science Letters, 巻 90, 番号 1, 01.01.1988, p. 65-68.

研究成果: ジャーナルへの寄稿記事

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AB - 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.

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