Geochemical and Sr–Nd–Hf isotopic constraints on the origin of Late Triassic granitoids from the Qinling orogen, central China: Implications for a continental arc to continent–continent collision

Phanerozoic tectonics of the South China Block: Key observations and controversies

“…Along the Dabie-Sulu belt, the UHP rocks were rapidly exhumed to crustal levels along the Dabie-Sulu orogenic belt (e.g., Zhao et al, 2006;Liu et al, 2008a;Zheng et al, 2009). In the meantime, the SCB finally collided with the NCB along the Qinling orogen (e.g., Jiang et al, 2010). Such progressive convergence from east to west between the SCB and NCB in the north postdates the Sibumasu-Indochina convergence in the south, marking the final assembly of Pangea in China.…”

Constraints on the paleogeographic evolution of the North China Craton during the Late Triassic–Jurassic

“…The early Mesozoic igneous rocks, widely distributed in the SQO but few in the NQO (Lu, 2000), have U-Pb ages of 182-240 Ma with e Hf (t) values ranging from À6.8 to 5.0 ( Fig. 4c; Gong et al, 2009aGong et al, , 2009bZhang et al, 2009b;Jiang et al, 2010), indicating significant upwelling of the asthenosphere on the southern margin of the NCC at that time. Additionally, the Dabie-Sulu Orogen contains abundant 240-220 Ma ultrahigh-pressure metamorphic rocks (Li et al, 1993).…”

Detrital zircons reveal no Jurassic plateau in the eastern North China Craton

“…Zircons extracted from the Early Mesozoic igneous rocks developed in the NQO and SQO have U-Pb ages ranging from 182 to 240 Ma with ε Hf (t) values from −6.8 to 5.0 (Gong et al, 2009a,b;Zhang C.L. et al, 2009;Jiang et al, 2010).…”