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Exhumation History of Eclogites from the Tso-Morari Crystalline Complex in Eastern Ladakh: Mineralogical and Fluid Inclusion Constraints
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Eclogites from the Tso-Morari Crystalline Complex in Ladakh, India, preserve evidence for high P, low T metamorphism of subducted Indian continental crust in the presence of a moderate salinity aqueous fluid phase. The phengite barometry estimates a pressure range of 11-14 kbar for eclogitization whereas garnet-omphacite geothermometry reveals a temperature range of 530°-580°C. Following eclogitization at 530°-580°C at a minimum pressure of 14 kbar, the eclogites were tectonically exhumed along a nearly isothermal P-T path that brought them to within 10-30 kilometers of the surface. Final transport to the surface followed a more normal continental geotherm.
Keywords
Tso-Morati, Eclogite, Fluid Inclusion, Mineral Geothermobarometry, Ladakh Himalaya.
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