| Activity Features and Slip Rate of the Lingwu Fault in Late Quaternary |
| |
| 作者姓名： | Liao Yuhu Chai Chizhang Zhang Wenxiao Xu Wenjun |
| |
| 作者单位： | Liao Yuhua，Chai Chizhang，Zhang Wenxiao and Xu WenjunSeismological Bureau of Ningxia Hui Autonomous Region，Yinchuan 750001，China |
| |
| 基金项目： | This project was sponsored by the Joint Earthquake Seience Foundation (197013) and the Commission of Science and Technology, Ningxia Hui Autonomous Region, China. |
| |
| 摘 要： | The I ingwu fault is in the eastern boundary of the southern section of Yinchuan graben. It hasa close relation to seismicity in the Lingwu-Wuzhong region.Few researches have been done.In this Paper,on the basis of tee data obtained from field investigation,the activity features inLate Quaternary have been discussed.The vertical displacement and its slip rate have been alsoestimated.The fault is 48km in length,being divided into 3 segments according to geologicaland topographical characteristics.The last rupture along its northern and middle segments wasoccurred in late of Late Pleistocene or early Holocene while that along the southern segmentwas occurred in midle Holocene.The vertical slip rate is estimated as 0.23～025mm/a sinceabout 66ka B.P.based on the vertical displacements of terracesⅠ,Ⅱ and Ⅲ and their ages.
|
Activity Features and Slip Rate of the Lingwu Fault in Late Quaternary |
| |
| Liao Yuhu,Chai Chizhang,Zhang Wenxiao,Xu Wenjun.Activity Features and Slip Rate of the Lingwu Fault in Late Quaternary[J].Earthquake Research in China,2000,14(4):329-337. |
| |
| Authors: | Liao Yuhu Chai Chizhang Zhang Wenxiao and Xu Wenjun |
| |
| Institution: | Liao Yuhua,Chai Chizhang,Zhang Wenxiao and Xu WenjunSeismological Bureau of Ningxia Hui Autonomous Region,Yinchuan 750001,China |
| |
| Abstract: | The Lingwn fault is in the eastern boundarv of the southern section of Yinchuan graben. It has a close relation to seismicity in the Lingwu-Wuzhong region. Few researches have been aone. In this paper, on the basis of the data obtained from field investigation, the activity features in Late Quaternary have been discussed. The vertical displacement and its slip rate have been also estimated. The fault is 48km in length, being divided into 3 segments according to geological and topographical characteristics. The last rupture along its northern and middle segments was occurred in late of Late Pleistocene or early Holocene while that along the southern segment was occurred in middle Holocene. The vertical slip rate is estimated as 0.23 - 0.25mm/a since about 66 ka B. P. based on the vertical displacements of terraces I, II and III and their ages. |
| |
| Keywords: | Lingwu fault Late Quaternary activity Slip rate |
| 本文献已被 CNKI 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 |
