Geochemistry of reduced gas related to serpentinization of the Zambales ophiolite, Philippines

Teofilo Abrajano*, N. C. Sturchio, B. M. Kennedy, G. L. Lyon, K. Muehlenbachs, J. K. Bohlke

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    144 Scopus citations

    Abstract

    Methane-hydrogen gas seeps with mantle-like C and noble gas isotopic characteristics issue from partially serpentinized ultramafic rocks in the Zambales ophiolite, Philippines. New measurements of noble gas and 14C isotope abundances, rock/mixed-volatile equilibrium calculations, and previous chemical and isotopic data suggest that these reduced gases are products of periodotite hydration. The gas seeps are produced in rock-dominated zones of serpentinization, and similar gases may be ubiquitous in ultramafic terranes undergoing serpentinization.

    Original languageEnglish (US)
    Pages (from-to)625-630
    Number of pages6
    JournalApplied Geochemistry
    Volume5
    Issue number5-6
    DOIs
    StatePublished - Jan 1 1990

    ASJC Scopus subject areas

    • Geochemistry and Petrology

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