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Abstract The oxygen and hydrogen isotope compositions of minerals and whole rock were determined for two types of gneiss (biotite gneiss and granitic gneiss) associated with ultrahigh pressure (UHP) eclogites in the Shuanghe district of the eastern Dabie Mountains. There are significant differences in 18O between the two gneisses: the UHP biotite gneiss varying from 4.3 to 10.6 similar to the associated...
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