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Sedimentary records of a palaeo-lake in the middle Yarlung Tsangpo: Implications for terrace genesis and outburst flooding
Hu, HP (Hu, Hai-Ping)1,2; Feng, JL (Feng, Jin-Liang)1; Chen, F (Chen, Feng)1,3
Source PublicationQUATERNARY SCIENCE REVIEWS
2018-07-15
Volume192Issue:0Pages:135-148
DOI10.1016/j.quascirev.2018.05.037
AbstractThe middle reaches region of the Yarlung Tsangpo in the southern Tibetan Plateau consist of broad valley reaches, alternating with gorges, which were easily dammed by glaciers and/or glacial moraines during the last glacial period. We investigated three palaeo-lake sedimentary sequences on terraces located in the broad Xigaze valley reach and the Dazhuka-Yueju gorge in the middle reaches of the Yarlung Tsangpo. We found that the altitude of the palaeo-lake was 3811 m above sea level, while its minimum area and volume were similar to 679 km(2) and similar to 22 km(3), respectively. The palaeo-lake was formed during the period from about 30.2 to 32.3 cal. kyr BP, and it failed at about 13.2 cal. kyr BP. The dam was possibly located at the eastern end of the Dazhuka-Yueju gorge and may have been a glacier and/or a moraine during the late part of the last glacial. The failure of the dam and related flooding from the Dazhuka-Yueju gorge probably triggered a chain reaction of dam failures downstream, forming a megaflood. Terrace genesis and valley evolution in the investigated region can be divided into four phases: Phase I (>32.3 cal. kyr BP), river occupation; Phase II (<32.3-13.2 cal. kyr BP), palaeo-lake occupation; Phase III (after 13.2 cal. kyr BP), erosion and aeolian deposition; Phase IV, modern downward incision. (C) 2018 Elsevier Ltd. All rights reserved.
WOS IDWOS:000438179800010
Language英语
Indexed BySCIE
KeywordC-14 YR BP YOUNGER DRYAS TIBETAN-PLATEAU DAMMED LAKE LATE PLEISTOCENE NORTHERN-HEMISPHERE LOESS SEDIMENTATION CHANNELED SCABLANDS SOUTHEASTERN TIBET OCEAN CIRCULATION
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
Cooperation Status国内
ISSN0277-3791
Department环境变化与地表过程重点实验室
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8597
Collection图书馆
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
2.East China Univ Technol, Sch Earth Sci, Nanchang 330013, Jiangxi, Peoples R China;
3.Shanxi Univ Finance & Econ, Dept Environm Econ, Taiyuan 030006, Shanxi, Peoples R China.
Recommended Citation
GB/T 7714
Hu, HP ,Feng, JL ,Chen, F . Sedimentary records of a palaeo-lake in the middle Yarlung Tsangpo: Implications for terrace genesis and outburst flooding[J]. QUATERNARY SCIENCE REVIEWS,2018,192(0):135-148.
APA Hu, HP ,Feng, JL ,&Chen, F .(2018).Sedimentary records of a palaeo-lake in the middle Yarlung Tsangpo: Implications for terrace genesis and outburst flooding.QUATERNARY SCIENCE REVIEWS,192(0),135-148.
MLA Hu, HP ,et al."Sedimentary records of a palaeo-lake in the middle Yarlung Tsangpo: Implications for terrace genesis and outburst flooding".QUATERNARY SCIENCE REVIEWS 192.0(2018):135-148.
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