Structural Features and Evolution of Yelu Fault Belt in Zhoukou Depression, Southern
详细信息
- 责任者：Bai Hua (College of Geosciences ; China University of Petroleum ; Beijing 102249 ; China) ; Yang Minghui
- 刊名：Geoscience
- 出版年：2010
- 卷期：24(6)
- 关键词：断裂带 ; fracture zones ; 构造演化 ; structural evolution ; 华北地区 ; North China
- 页码：p.1035-1041
- 图表：4 illus., 23 refs.
- 分类号：0300
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
Located in the southern North China Craton,Yelu fault belt is an important part of Lushan-Wuyang-Fuyang-Huainan fault belt, which controls the formation and evolution of Tanzhuang Sag and Wuyang Sag in Zhoukou depression. It was affirmed through drilling analysis,seismic profile interpretation and balanced cross section analysis that under the influence of Qinling-Dabie orogenic activity, Yelu fault belt strongly thrusted towards NNE, with about 37° fault dip and fault activity rate of -22 m/Ma during the Late Jurassic and Early Cretaceous; occurred in the Late Cretaceous and Paleogene, the negative inversion of Yelu fault belt was related to the extensional environment in Zhoukou depression. The result shows that during the Late Jurassic and Early Cretaceous,fault slip of Yelu fault belt amounts to 6 100 m, and fault propagation is 9 150 m as well as p/s is 1.5, with the trishear angel of 150°.