Deuterium/Hydrogen Ratios and Water Content of Some Silicate Melts at High Pressure
Various approaches have been made by different workers to determine the role of water in the mantle or the lower crust. For example, Kuroda et al.  determined the water content of some hydrosilicate minerals under high pressure and high temperature conditions. The stability field of some hydro-silicate minerals was studied by Kushiro , Kushiro et al. , Lambert and Wyllie , Hariya et al. [5,6] and others. The investigations of the role of water on the magma genesis (Allen et al. , Kushiro , and Burnham and Davis ) and the hydrogen and oxygen isotope frac-tionation of hydrous minerals (Kokubo et al. , Sheppard and Epstein , and Kuroda et al. ) also provide valuable information as to the concentration of water in the upper mantle or the lower crust.
KeywordsOxygen Isotope Lower Crust Quartz Glass Hydrogen Isotope Hydrous Mineral
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