Abstract
Abstract The Chinese Altay orogen is an important part of the giant Central Asian Orogenic Belt. However, its tectono–metamorphic evolution is still a matter of debate. Here, we report Devonian pelitic granulites at the Wuqiagou area in the southern Chinese Altay orogen. They are characterized by an assemblage of garnet + orthopyroxene + cordierite ± spinel + biotite + plagioclase ± K–feldspar + quartz + Fe–Ti oxides. Based on petrographic features and P–T estimates, together with phase equilibrium modeling in the NCKFMASHTO system, three metamorphic stages can be distinguished as follows: (1) pre–peak prograde (M1) stage, with small biotite–plagioclase– or spinel–bearing assemblages preserved as inclusions in garnets and P–T conditions of
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