Melting relation of Fe2SiO4 up to about 200 kbar.

DOI 9 Citations Open Access

Bibliographic Information

Other Title
  • Melting relation of Fe2SiO4 up to about 200 kilobars

Description

The melting relations in fayalite Fe2SiO4 and its high pressure modification γ-Fe2SiO4 have been experimentally studied at pressures up to about 200kbar. Fayalite melts congruently up to the triple point, 70±5kbar and 1, 520±25°C, of fayalite, γ-Fe2SiO4, and liquid. The initial slope of γ-Fe2siO4 is about 12°/kbar. γ-Fe2siO4 melts congruently up to about 130 kbar, above which it melts incongruently into stishovite SiO2 and liquid. The incongruent melting in γ-Fe2SiO4 terminates at about 170kbar and 2, 200°C. Above this pressure, the melting mode switches to the eutectic melting between wustite Fe1-xO and stishovite SiO2, which are the post γ-Fe2SiO4 assembly. The present data suggest a possibility of incongruent melting of γ-(Mg, Fe)2SiO4 at high pressure. Possible roles of the change in melting mode on the chemical fractionation of the earth's mantle are discussed.

Journal

  • Journal of Physics of the Earth

    Journal of Physics of the Earth 27 (3), 189-208, 1979

    The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan

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Details 詳細情報について

  • CRID
    1390001206510379904
  • NII Article ID
    130003962866
  • DOI
    10.4294/jpe1952.27.189
  • ISSN
    18842305
    00223743
    http://id.crossref.org/issn/00223743
    http://id.crossref.org/issn/01486349
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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