Publication Date:
2013-08-31
Description:
The author and colleagues presented their determinations of water activities in various granulite-facies rocks of the Kerala Khondalite Belt. Using mineral equilibria, thermodynamic data, and assumed geopressure-geotemperature conditions of 5.5 kbar and 750 C, they calculated uniformly low a(H2O) values of about 0.27 over a large geographic region. They suggested that these conditions were produced by the presence of abundant CO2-rich fluids, derived either from deeper levels or from metamorphic reactions involving graphite.
Keywords:
GEOPHYSICS
Type:
Lunar and Planetary Inst., Workshop on the Deep Continental Crust of South India; p 40-42
Format:
application/pdf
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