Discussion on mine-controlling tectonics of Chaohu coalfield, Anhui Province

Based on the modern tectonic geometry theory, it is studied that the mine-controlling structural styles of the Chaohu coalfield, eastern Anhui Province. It is found that the Chaohu coalfield is dominated by large-scale recumbent fold-thrust system. Based on the tectonic properties the system can be separated to 3 tectonic zones, including Hexian-Hanshan recumbent fold thrust zone, Chaohu-Yingpingshan recumbent fold-thrust, which involves the entire Sinian Triassic passive continental cover deposits of the South China block. It is proposed that the recumbent fold-thrust system of the Chaohu coalfield was a result of the Yangzi plant along the Tanlu fault zone thrust in A type to North China plant during early Mesozoic time.