The fracture formation and its evolution from Upper Cretaceous to Cenozoic in Haian Depression
Chen Shu-ping1,2, Wang Xiao-qun3, Wang Zhang-qing3, Qu Dong-meng1,2, Luo Yi3
1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Changping District, Beijing City, 102249, China;
2. Faculty of Natural Resource and Information Technology, China University of Petroleum, Changping District, Beijing City, 102249, China;
3. Geological Science Research Institute of Jiangsu Oilfield Company, Sinopec, Yangzhou City, Jiangsu Province, 225000, China
Abstract:Base on the seismic data acquired in recent years in Haian Depression,the internal fracture characteristics from the Upper Cretaceous to Cenozoic have been studied. The facture extending direction of the Haian Depression is NE,NEE and NWW or approximately EW. The main fault has different strike in different segments,the structures are different in the deep and the shallow,and the main fault controls the depression structure,the secondary faults are generally controlled by main fault,and their formation and strike are affected by main fault as well. The fault activities show cycle feature,they control cycle evolution of the basin structure. The fault distribution reflects its NW-SE extension during Taizhou-Funing formation Sedimentation and meanwhile the distribution is shown affected by dextral twist,the early sediment period for the Sanduo formation was extending fault development period,its extending direction is NW-SE,in Sanduo sediment late period,due to compression from approximately EW some faults show strike-slip feature. In early Cenozoic the faults acted succeedingly,in late Cenozoic the faults acted along the main fault. The change in tectonic stress field is related to the change of plate movement.
陈书平, 王小群, 王章青, 屈冬萌, 罗义. 海安凹陷上白垩统—新生界断裂形成及演化[J]. 石油地球物理勘探, 2009, 44(6): 760-766.
Chen Shu-ping, Wang Xiao-qun, Wang Zhang-qing, Qu Dong-meng, Luo Yi. The fracture formation and its evolution from Upper Cretaceous to Cenozoic in Haian Depression. OGP, 2009, 44(6): 760-766.