Dating of multiple debris flow stages in the Sandaoqiao gully, Kangding, Eastern Tibetan Plateau: implications for regional tectonic and climate changes
文献类型:期刊论文
作者 | Guo, Yongqiang2; Ge, Yonggang2; Mao, Peini1 |
刊名 | ENVIRONMENTAL EARTH SCIENCES |
出版日期 | 2024-02-01 |
卷号 | 83期号:3页码:15 |
ISSN号 | 1866-6280 |
关键词 | Debris flow fan Sedimentary structure Geochronology Dadu River Last Glacial |
DOI | 10.1007/s12665-023-11400-5 |
英文摘要 | Chronology of debris flow deposits (DFD) is crucially important in understanding fan evolution and assessing the risks of future extreme disaster events. To establish the debris flow history in a long-term temporal framework, multiple debris flow and flash flood events were examined from the Sandaoqiao (SDQ) gully near the large-scale active Xianshuihe faults, eastern Tibetan Plateau. The rough and discontinuous structures indicate DFD are characterized by "linear stone structure" and boulders enclosed by clayey silts in the SDQ gully. On the basis of debris flow sedimentary characteristics, we develop a valid sampling strategy involving C-14 and OSL dating methods (13 radiocarbon and 3 OSL ages) on the debris flow fan. The major stages of debris flow aggradation were identified at similar to 35 kyr B.P., 23-22 kyr B.P., similar to 13 kyr B.P. and 3.9-1.4 kyr B.P. since the Last Glacial (last similar to 35 kyr B.P.). And gully-fill deposits were more abundant during the latest Pleistocene (35-13 ka) than current phase. Late Holocene debris flow and flash flood events recur in the mid-channel from 3.9-3.8 to 1.9-1.4 kyr B.P., which was probably triggered by palaeo-earthquake events associated with active faults. The current phase is dominated by debris flood events and the maximum discharge is estimated as similar to 290 m(3)/s. This study provides key chronology for understanding multiple debris flow stages associated with regional tectonic activity and climatic change in the eastern Tibetan Plateau. |
WOS关键词 | XIANSHUIHE FAULT ZONE ; LATEST PLEISTOCENE ; ACTIVE FAULT ; RIVER VALLEY ; EARTHQUAKE ; DEPOSITS ; SINGLE ; QUARTZ ; RECONSTRUCTION ; LUMINESCENCE |
资助项目 | Youth Innovation Promotion Association CAS |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:001153284200001 |
资助机构 | Youth Innovation Promotion Association CAS |
源URL | [http://ir.imde.ac.cn/handle/131551/57871] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Ge, Yonggang |
作者单位 | 1.Sichuan Normal Univ, Sch Geog & Resources Sci, Chengdu 610101, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Guo, Yongqiang,Ge, Yonggang,Mao, Peini. Dating of multiple debris flow stages in the Sandaoqiao gully, Kangding, Eastern Tibetan Plateau: implications for regional tectonic and climate changes[J]. ENVIRONMENTAL EARTH SCIENCES,2024,83(3):15. |
APA | Guo, Yongqiang,Ge, Yonggang,&Mao, Peini.(2024).Dating of multiple debris flow stages in the Sandaoqiao gully, Kangding, Eastern Tibetan Plateau: implications for regional tectonic and climate changes.ENVIRONMENTAL EARTH SCIENCES,83(3),15. |
MLA | Guo, Yongqiang,et al."Dating of multiple debris flow stages in the Sandaoqiao gully, Kangding, Eastern Tibetan Plateau: implications for regional tectonic and climate changes".ENVIRONMENTAL EARTH SCIENCES 83.3(2024):15. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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