Deformation of Reverse Fault and Layered Landform in Piedmont of Kalpintag Mountains during the Late Quaternary: Taking the Faulted Landform of Northwestern Sanchakou as an Example
详细信息
- 责任者：Xu Liangxin (National Center of Active Fault Studies ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Ran Yongkang
- 刊名：Seismology and Geology
- 出版年：2011
- 卷期：33(4)
- 关键词：断裂带 ; fracture zones ; 逆断层 ; reverse faults ; 新疆 ; Xinjiang
- 页码：p.777-788
- 图表：4 illus., 2 tables, 38 refs.
- 分类号：0300
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
To estimate the vertical slip magnitude and rates of the Kalpintag fault during the Late Quaternary, the authors investigated the latest evidences from the topographic and geomorphic survey of the fault scarps on the fans using differential GPS and the exposure 10Be age of amalgamated samples on the surface of abandoned fans. Based on the 10Be exposure age of each alluvial fan, the authors calculated the vertical slip rate on T1, T2, T3 alluvial fans to be (0.15±0.02), (0.16±0.02) and (0.15±0.02) mm/a since (20.2±1.91) ka B.P., with a corresponding crustal shortening rate of the Kalpintag fault to be 0.18～0.44 mm /a.