Sinistral Strike-slip Movement Along Western Terminal Segment of the Active Daqingshan Piedmont Fault, Inner Mongolia, China

作     者：Jiang Wali, Xiao Zhenmin and Wang HuanzhenInstitute of Crustal Dynamics, CSB, Beijing 100085, China 

作者机构：Institute of Crustal Dynamics CSB Beijing 100085 China 

出 版 物：《Earthquake Research in China》 (中国地震研究（英文版）)

年 卷 期：2001年第15卷第1期

页      面：15-24页

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：the Joint Seismological Science Foundation.Contribution No.2000A 0005  Institute of Crustal Dynamics  China Seismological Bureau  China 

主　　题：Sinistral strike-slip Holocene Daqingshan active piedmont fault 

摘      要：There are 18 gullies displaying sinistral contortions to different degrees along the western terminal segment about 10 km long of the active Daqingshan piedmont fault near the Donghe District, Baotou City. The contortion amount of gullies ranges from 20 m to 300 m. The contortion and length of the gullies are in direct proportion. The relation between piedmont terraces and gullies indicates that the gullies with upper reaches of about 1 ～ 5 km long and those smaller than one kilometer were formed at the end of Late Pleistocene and ***, sandy gravel layer of alluvial-proluvial sediment on the upthrown wall is directly in contact with yellow clayey sand of the downthrown wall. During the Holocene, the sinistral strike-slip rate along the western terminal segment of the active Daqingshan piedmont fault reached 5 mm/a from age data of dislocated sediments. The evolutional mechanism of the active Daqingshan piedmont fault is also discussed in the paper.