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《中国科学院地质与地球物理研究所二○○三学术论文汇编·第五卷(矿产资源与水资源)》2003年
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Fluid evolution and exhumation history of ultrahigh-pressure rocks at Lanshantou,Sulu terrane,Eastern China

M.Satir  
【摘要】:正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]N_2 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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