Paleoproterozoic ultrahigh-temperature granulite-facies metamorphism in the Sulu orogen, eastern China: Evidence from zircon and monazite in the pelitic granulite

Abstract

Abstract Because of their essential information for constraining the timescales of high-temperature processes, zircon and monazite are the two most important minerals for understanding crustal processes. Zircon and monazite are common accessory minerals in pelitic granulites (Sulu orogen, eastern China). The pelitic granulites have a peak mineral assemblage of garnet\u202f+\u202fsillimanite\u202f+\u202fantiperthite\u202f+\u202fplagioclase\u202f+\u202fquartz\u202f+\u202frutile\u202f±\u202fbiotite. Zircons from the granulite have low Th/U ratios (