| Sinistral Strike-slip Movement Along Western Terminal Segment of the Active Daqingshan Piedmont Fault, Inner Mongolia, China |
| |
| 作者姓名： | Jiang Wali Xiao Zhenmin Wang Huanzhen |
| |
| 作者单位： | Jiang Wali，Xiao Zhenmin and Wang HuanzhenInstitute of Crustal Dynamics，CSB，Beijing 100085，China |
| |
| 基金项目： | the Joint Seismological Science Foundation．Contribution No.2000A 0005, Institute of Crustal Dynamics, China Seismological Bureau, China. |
| |
| 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 Holocene.Meanwhile, 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.
|
Sinistral Strike-slip Movement Along Western Terminal Segment of the Active Daqingshan Piedmont Fault, Inner Mongolia, China |
| |
| Jiang Wali,Xiao Zhenmin,Wang Huanzhen.Sinistral Strike-slip Movement Along Western Terminal Segment of the Active Daqingshan Piedmont Fault, Inner Mongolia, China[J].Earthquake Research in China,2001,15(1):15-24. |
| |
| Authors: | Jiang Wali Xiao Zhenmin and Wang Huanzhen |
| |
| Institution: | Institute of Crustal Dynamics, CSB, Beijing 100085, China Institute of Crustal Dynamics, CSB, Beijing 100085, China Institute of Crustal Dynamics, CSB, Beijing 100085, China |
| |
| Abstract: | 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 Holocene. Meanwhile, 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. |
| |
| Keywords: | Sinistral strike-slip Holocene Daqingshan active piedmont fault |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国地震研究》浏览原始摘要信息 |
| 点击此处可从《中国地震研究》下载免费的PDF全文 |
