|
|||||
|
|
Optically Stimulated Luminescence (OSL) Chronology of the Dehenglong Landslide from Longyang Gorge to Liujia Gorge along Upper Yellow River, China |
|
| Authors: | GUO Xiaohu LAI Zhongping LU Yudong LI Xiaolin and SUN Zheng |
| Institution: | 1. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, School of Environmental Science and Engineering, Chang'an University, Xi'an 710064,Shaanxi, China 2. School of Earth Sciences, China University of Geosciences, Wuhan 430074, Hubei, China 3. Key Laboratory of Environmental Geology of Qinghai Province, Qinghai Provincial 906, Qinghai Institute of Geological Investigation, Xining 810008, Qinghai, China |
| Abstract: | Giant landslides are common along the upper Yellow River from Longyang Gorge to Liujia Gorge, and some of them even blocked and dammed the upper Yellow River. Chronology is inevitable in studying the mechanism of giant landslides. Controversy exists about the chronology of those giant landslides, and some have not yet dated. The Dehenglong landslide is the largest one among them. In this study, OSL samples were collected from lacustrine silty sediments and loess directly overlying the landslide sediments, as well as fault sediments related to the landslide. This landslide yielded an age of 89 ± 8 ka, which is identical with the fault age of 73 ± 5 ka at two sigma errors. The agreement of a topographic analysis and the absolute age of landslides imply that the formation of the Dehenglong landslide is strongly correlated with the tectonic activity. |
| Keywords: | landslide OSL Upper Yellow River in China Qinghai-Tibetan Plateau |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《Acta Geologica Sinica》浏览原始摘要信息 | |
| 点击此处可从《Acta Geologica Sinica》下载免费的PDF全文 | |