Fusion of pyrope at high pressures and rapid crystal growth from the pyrope melt

Eiji Otani, Tetsuo Irifune, Kiyoshi Fujino

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Pyrope Mg3Al2Si3O12 is the magnesium end member of the pyralspite garnet series, which is an important constituent of the upper mantle. Melting experiments at high pressure are necessary to clarify the chemical heterogeneity in the deep mantle and the origin of various magmas. Some authors have suggested the possibility of the pressure-induced structural change of silicate melts and discussed its importance on the magma generation and the differentiation in the mantle 1,2. We report here melting experiments on pyrope at pressures up to 10 GPa as a first stage in extending the pressure range of model systems for the upper mantle and examining the possibility of the pressure-induced structural change of the melt at high pressure. The correlation between the melting curve and the change of the quenched phases from the melt is the first evidence of a structural change of the pyrope melt at high pressure.

本文言語English
ページ(範囲)62-64
ページ数3
ジャーナルNature
294
5836
DOI
出版ステータスPublished - 1981 12 1

ASJC Scopus subject areas

  • Medicine(all)
  • General

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