Abstract
Two-pyroxene-bearing granulites were discovered for the first time in the Hercynian-lndosinian metamorphic belt of the southern Qinling Mountains. The granulites occur In the lower part of the Fuping complex and are dominated by intermediate-acidic rocks intercalated with a small amount of bands and lenses of basic granulites. The main metamorphic minerals include orthopyroxene, clinopyroxene, biotite, plagioclase and quartz, and orthopyroxenes are often retrogressively transformed Into amphiboles. The metamorphic conditions have been estimated to beT = 720–780°C andP = 0. 6 GPa. The granulite-bearing Fuping complex probably belongs to early Proterozoic in age. Whether it occurs as the crystalline basement of the southern Qinling Hercynian-lndosinian orogenic belt or as a thrusted slice in the collisional process needs further study.
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