Discovery of Mafic Granulites in the Muzhaerte Area, SW Tianshan, China

Accretionary and collisional orogeny are often accompanied by the disturbance of geothermal gradient, leading to high-temperature metamorphism. High-temperature metamorphic rocks significant in their ability help reconstruction thermal histories orogenic belts. The Tianshan Orogenic Belt, at southwest margin Central Asian is a record long-term subduction–collision–post-collision process that has taken place Phanerozoic Eon. Here, we report discovery mafic granulites Muzhaerte area, SW Tianshan. Petrographic observation reveals underwent two stages. peak mineral assemblage first stage dominated clinopyroxene + orthopyroxene plagioclase quartz hornblende (hb1) ± biotite, post-peak second (hb2) biotite. calculated results obtained from two-pyroxene thermobarometers Al-in-hornblende barometer for indicate conditions 760–860 °C, <0.39–0.41 Gpa. recorded high-grade granulite facies event with highest temperature limit currently Block.