カンラン石 : メルトおよび斜長石 : メルト間の元素分配に関する研究の現状と課題

  • 菅原 透
    秋田大学鉱山学部素材資源システム研究施設

書誌事項

タイトル別名
  • Review of Element Partitioning for Olivine-Liquid and Palagioclase-Liquid
  • カンランセキ メルト オヨビ シャチョウセキ メルト カン ノ ゲンソ ブンパ

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説明

Published experimental data on element partitioning between olivine-liquid and between plagioclase-liquid are compiled, and the thermodynamics of the element partitionings is discussed. Published thermodynamic and empirical models for the element partitioning between olivinerliquid and between plagioclase-liquid are reviewed. The parameter values obtained in the previous models are re-examined based on the experimental data compiled in this study, and the accuracies are compared in terms of the compositions of olivine and plagioclase and also the predicted equilibrium temperature. The results of comparison suggest that errors are the smallest in the models of Gee and Sack (1988) and Carmichael and Ghiorso (1990) for prediction of MgO content of olivine, Beattie (1993) model for prediction of olivine liquidus temperature, Ghiorso and Sack (1995) and Grove et al. (1992) models for prediction of CaO content of plagioclase, and Kinzler and Grove (1992) model for prediction of plagioclase liquidus temperature, respectively. For prediction of olivine and plagioclase compositions and liqudus temperature of plagioclase, Ghiorso and Sack (1995) model gives the most reliable results among the models of Nielsen and Dungan (1983), Arislkin et al. (1993) and Ghiorso and Sack (1995). It suggests that the liquid line of descent calculated by MELTS is the most accurate among the three different computer programs to simulate magma difilerentiation proceses, EQUIL, COMAGMAT and MELTS.

収録刊行物

  • 火山

    火山 43 (4), 181-201, 1998

    特定非営利活動法人 日本火山学会

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