著者

石川 晃

出版者

一般社団法人 日本鉱物科学会

雑誌

岩石鉱物科学 (ISSN:1345630X)

巻号頁・発行日

vol.41, no.5, pp.203-210, 2012 (Released:2012-11-30)

参考文献数

53

被引用文献数

1

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Three enigmas of highly siderophile elements (HSE) in Earth's mantle, manifested by recent advances in HSE geochemistry of mantle peridotites, are reviewed in this paper. They are (1) the apparent overabundance of the HSE in the Earth's mantle compared to metal-silicate equilibrium, (2) supra-chondritic Pd/Ir and Ru/Ir ratios in primitive upper mantle (PUM) estimates, and (3) contrasting HSE patterns between massif- and xenolithic-peridotites. More studies on both natural and experiment-based data are clearly required for resolving these problems.