Preliminary Study on Activity of the Wudu-Kangxian Fault Zone
详细信息
- 责任者：Jia Wei (Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China) ; Liu Hongchun
- 刊名：Northwestern Seismological Journal
- 出版年：2012
- 卷期：34(2)
- 关键词：断裂带 ; fracture zones ; 活动构造 ; active tectonics ; 甘肃 ; Gansu Province
- 页码：p.142-149
- 图表：illus.,1 table,14 refs.
- 分类号：0300
- issnNo：ISSN
- isbnNo：CN62-1048/P
摘要
Wudu-Kangxian fault is one of the regional faults with left-lateral strike slip and thrusting active in southeastern part of Gansu Province. Through satellite image interpretation and field investigation, the geometric segmentation and geomorphological and geological characteristics of the fault are studied. The result shows that the fault zone can be divided into the west（F1 ） and east（F2） segments, named Shangbanqiao-Changba fault and Shenjiayuan-Yaoping fault. The new active of west segment（F1） was in Holocene, occurred from （1.730 ±0.111） ka to （1.670 ± 0.141） ka ago. Its strong and obvious Holocene active characteristics are found in Ganquan Town, mainly shows left-lateral strike slip accompanied by reverse component. The east segment（F2 ） may be a Late Pleistocene active fault, mainly shows reverse component accompanied by the left-lateral strike slip.