Abstract
Fluid inclusions in coesite-bearing eclogites and eclogite-facies quartz veins at Lanshantou in the Sulu ultrahigh-pressure metamorphic (UHPM) terrane, Eastern China, have preserved remnants of peak metamorphic and exhumation fluids. Three types of fluids have been distinguished: (1) mixed H 2O CO 2 ± N2 fluid, (2) hypersaline aqueous fluid and (3) low salinity H 2O fluid. Mixed H 2O CO 2 ± N2 fluids were introduced during or just after peak metamorphism. The hypersaline fluids might be products of dehydration melting during early stage of exhumation. Low salinity H 2O inclusions can be related to the latest evolutionary stage of the high-pressure veins during exhumation.
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