Structural Pattern during the Rifting Stage of the Xihu Sag and Its Control of Sediment Infilling
详细信息
- 责任者：Zhang Minqiang (CNOOC ; Co. Shanghai 200030 ; China) ; Xu Fa
- 刊名：Marine Geology & Quaternary Geology
- 出版年：2011
- 卷期：31(5)
- 关键词：构造样式 ; tectonic style ; 构造演化 ; structural evolution ; 西湖凹陷 ; Xihu Sag
- 页码：p.67-72
- 图表：illus., 7 refs.
- 分类号：0300
- issnNo：ISSN0256-1492
- isbnNo：CN37-1117/P
摘要
The structures of the Xihu Sag in the rifting stage include those formed from the onset of rifting (boundary Tg) up to the Late Eocene in this paper. The Structural pattern is the factor controlling over the development of stratigraphy and the spatial distribution of depositional systems.The prototype of the basin during the rifting stage is a complicated half graben controlled by three groups of fault zone, i.e. the fault zone on east steep slope, the fault zone in central depression, and the fault zone on west gentle slope, all extending in NE direction. The sedimentation and tectonic events are episodic as a local response to the subduction of the Pacific plate under the Eurasian Plate starting from the Late Mesozoic.