Abstract
Detailed petrological studies of the assemblages of metamorphic minerals stably found in bore-hole cores from some active geothermal areas in Japan as well as in New Zealand show that temperature and depth of the point at which zeolite-bearing assemblage in rocks was transformed into feldspar-bearing assemblage with increasing temperature are available for the indicators of water pressure conditions or of the ratio of H2O pressure/total pressure prevailed in deeper part of these geothermal areas.
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Schedule a callMore From: The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists
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