C Quansheng, C Xiaohong, W Chuanshang… - 地质科技 …, 2020 - dzkjqb.cug.edu.cn
Based on the pervious researches, the occurrence characteristics and depositional environment of graptolites from the black shale of the upper Ordovician Wufeng Formation …
The large-scale development of shale gas with a buried depth of less than 3 500 m within the overpressure Wufeng-Longmaxi Formation has been realized in Sichuan Basin, and the …