Hydration reactions of pyroxenite under granulite-facies, Sør Rondane Mountains, East Antarctica

抄録

Hydration is one of the important process involves fluids movement causes changes in the mass balance and redistribution of elements, as well as formation of new minerals. Pyroxenite that are partly hydrated along veins was collected from Mefiell, East Antarctica. By using hornblende-plagioclase thermometer and Al in hornblende geobarometer formatting conditions of hydrated minerals were estimated to be ~ 6 Kbar, 650±50°C, which was equivalent to the metamorphic conditions of the pyroxenite.