Garnet fractionation in a hydrous magma ocean and the origin of Al-depleted komatiites: melting experiments of hydrous pyrolite with REEs at high pressure

Toru Inoue, Robert P Rapp, Jianzhong Zhang, Tibor Gasparik, Donald J Weidner, Tetsuo Irifune

doi:10.1016/s0012-821x(00)00038-8

Garnet fractionation in a hydrous magma ocean and the origin of Al-depleted komatiites: melting experiments of hydrous pyrolite with REEs at high pressure

DOI Web Site Web Site 被引用文献3件

書誌事項

公開日: 2000-04-15

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https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/s0012-821x(00)00038-8

公開者: Elsevier BV

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説明

Abstract Melting experiments of a representative mantle composition doped with some key trace elements were conducted under hydrous conditions at pressures to 20 GPa. The results demonstrate that only ∼5–25% of garnet fractionation and relatively low pressures ( 3.5 Ga) in the solidifying hydrous magma ocean. This suggests that the Archean mantle was much cooler than so far believed from the origin of the komatiites based on anhydrous experiments.