Geochronology and geochemistry of Neoarchean granitoids from the western Shandong Province, North China Craton, implications for crustal evolution and cratonization

摘要

Highlights?The Archean granites of the WSP formed at 2.51–2.49Ga.?Major source of the granites is TTG type rocks.?Regional anatectic event took place at 2.51Ga.?Regional anatexis and the formation of granites are important processes during the stabilization of the crust.AbstractGranites are keys to the understanding of crustal stabilization and cratonization processes. Here we present an integrated study of the lithology, geochronology and geochemistry of late Neoarchean granites and associated TTGs (tonalite-trondhjemite-granodiorite) and migmatites from the western Shandong Province (WSP) of the North China Craton (NCC). The TTG xenoliths in the Lushan massive granite formed at 2529±7Ma. The Menglianggu and Yishan migmatite, containing 2.70–2.52Ga inherited zircons, defines regional anatectic event at 2512±6Ma. The Menglianggu, Lushan and Yishan granites yield207Pb/展开▼