Outline of paleoproterozoic tectonic division and plate tectonic evolution of North China Craton

At least three tectonic units could be divided for the Paleoproterozoic tectonic framework of North China Craton (NCC): (1) intra-cratonic rifts (2.6-2.3 Ga), (2) marginal orogen (2.6-2.3 Ga), and (3) reworked Archean craton (mainly granulite-facies belt, gt;2.5 Ga). The important tectono-thermal events in late Neoarchean to Paleoproterozoic may be inferred from regional tectonic analysis, including: (1) extension and development of continental rift in the central portion of NCC; (2) accretion and reworking along the north margin of NCC; (3) closure of the rift and intra-plate orogeny. The tectonic evolution of NCC during early Precambrian could be well explained by the plate tectonic regime.EI03230-2352