Tectonic evolution characteristics and mechanism in Western Hunan-Hubei
Chen Yuming, Gao Xingxing, Sheng Xiancai
1. School of Geosciences, China University of Petroleum (Hua Dong), Qingdao, Shandong 266580, China;
2. School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
Abstract：This study is conducted based on 2-D seismic data and field geological survey data in Western Hunan-Hubei. The following observations are obtained: A.The area is a complex mountain-basin system formed by the Jiangnan-Xuefeng Orogenic belt and its foreland thrust belts, and the East Qingling-Dabie Orogenic belt and its foreland thrust belts, which comprises a regional geologic structure with a basin intervening between two mountains; B.The multi-phase tectonic movements since the basement formed resulted in a complicated tectonic evolution history and characteristics with a variety of tectonic styles. As a whole, structures are characterized by ramp fringe, north-south zonation, and vertical superimposition. Locally, two-layer structures occur. In addition, the mechanism for evolution and formation is summarized in the paper.
