Activity of Central Segment, Changde-Yiyang-Changshan Fault at the Southern Margin of Dongting Basin , Hunan Province, China
详细信息
- 责任者：Han Zhujun (Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Xiang Hongfa
- 刊名：Seismology and Geology
- 出版年：2011
- 卷期：33(4)
- 关键词：断裂带 ; fracture zones ; 洞庭湖 ; Dongting Lake
- 页码：p.839-854
- 图表：5 illus., 22 refs.
- 分类号：0300
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
According to the detailed shallow geophysical survey, drilling, dating,geological geomorphic investigation along the central segment of the Changde-Yiyang-Changshan fault at the southern margin of Dongting Basin, features about its geometry, dynamics, active epochs and basin structural type are revealed. Based on the comparison of fault-controlled subsidence and sediment thickness, it can be concluded that the Anxiang-Hanshou Depression was formed mainly by deformation, not by faulting. Both faults and moderate earthquakes are concentrated along the zones between Dongting Basin and surrounding uplifting mountains.