The Development Characteristics of the Fault System and Basin Structures of the Bodong Sag, East China
详细信息
- 责任者：Wu Zhiping (China University of Petroleum ; Qingdao 266580 ; China) ; Xue Yan
- 刊名：Geological Journal of China Universities
- 出版年：2013
- 卷期：19(3)
- 关键词：断裂 ; fractures ; 盆地演化 ; basin evolution ; 渤海湾盆地 ; Bohaiwan Basin
- 页码：p.463-471
- 图表：8 illus., 21 refs.
- 分类号：0300
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
Based on the detailed description of fault system,this paper established different types of fault structure patterns and analyzed the distribution characteristics of faults in the study area of Bodong by using abundant seismic data and combined analyses of sections and time slice characteristics.Furthermore,we carried out studies of the controlling role that fault system played on basin structures.It is concluded that the development characteristics of fault system in Cenozoic age was in accordance with the right lateral stress-field of Tanlu fault which is expressed as NNE-trending strike-slip faults for main branches,NEtrending tensional faults for secondary ones and near EW-trending faults for the least abundant ones.Also,faults can be subdivided into slip typed,tensional-slip,slip-tensional,and tensional types.Besides,different types of faults have different structures due to the effects of property and activity intensity.Fault system in different ages showed tremendous differences because of stress transition of Tanlu fault from left lateral to right lateral and intensity transition between tension and slip.According to the dominant impact that fault acted on basin structures,Cenozoic basin can be classified into four revolutionary stages,i.e.,transitional stage from left lateral to right lateral,slip-tension faulted stage,tension-slip faulted stage,and slipdepression stage.Therefore,the identification of temporal and spatial differences of faults could be used as an important guideline for the oil and gas exploration in Dodong area.