Prehnite-epidote equilibria and their petrologic applications.

J. G. Liou, H. S. Kim, S. Maruyama

    Research output: Contribution to journalArticle

    88 Citations (Scopus)

    Abstract

    Using conventional hydrothermal apparatus and solid oxygen-buffer techniques, the phase relations of prehnite and epidote are shown to be defined by continuous reactions where a transition zone between the garnet-in reaction and the prehnite-out reaction occurs at 325-343oC, 2 kbar; 353-375oC, 5 kbar; and 373-395oC, 8 kbar Pfluid and fO2 of the HM buffer. These results, combined with previously determined relations for prehnite, zoisite and epidote, delineate a petrogenetic grid which is consistent with parageneses and variation in Fe/Al ratios of coexisting prehnite and epidote in metabasic rocks of the prehnite-pumpellyite and pumpellyite-actinolite facies, and in altered rocks from many geothermal systems.-R.A.H.

    Original languageEnglish
    Pages (from-to)321-342
    Number of pages22
    JournalJournal of Petrology
    Volume24
    Issue number4
    DOIs
    Publication statusPublished - Jan 1 1983

    ASJC Scopus subject areas

    • Geophysics
    • Geochemistry and Petrology

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