- 责任者：Jiang Qinqin (School of Resources and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Xie Chenglong
- 刊名：Chinese Journal of Geology
- 出版年：2013
- 卷期：48(3)
- 关键词：断层 ; faults ; 高邮凹陷 ; Gaoyou sag
- 页码：p.647-664
- 图表：14 illus., 3 tables, 42 refs.
- 分类号：0300
- issnNo：ISSN0563-5020
- isbnNo：CN11-1937/P
The Xuzhuang and Fangxiang accommodation zones occur between three NNE-striking, left-step,en echelon Zhen-~） faults, developed in Eocene, along the northern border of the southern fault step zone of the Gaoyou Sag. Structural maps for different reflection surfaces shows that normal faults in the two accommodation zones can be classified into two major types, i. e. connection fault and non-connection fault. The connection fault can be divided into three types including perpendicular connection fault, oblique connection fault and arc connection fault. The non-connection fault can be divided into eight types, including synthetic parallel fault, regional oblique fault, oblique and transverse ramp extension fault, oblique and perpendicular connection-propagation fault, secondary en echelon fault and reticular fault. Our numerical modeling in both the finite difference and finite element methods shows development processes for the different faults in an accommodation zone. The results suggest that faults in the accommodation zones form as direct results of a regional stress, or as results of oblique extension and propagation of the boundary faults as well as bending fault ramp. Therefore, fault development in an accommodation zone is influenced by several factors, leading to complicated fault sets.