干旱区生态环境知识资源中心(Arid): Glacier-Induced Alluvial Fan Development on the Northeast Tibetan Plateau Since the Late Pleistocene

Arid

DOI	10.3389/feart.2021.702340
	Glacier-Induced Alluvial Fan Development on the Northeast Tibetan Plateau Since the Late Pleistocene
	An, Fuyuan; Qiuying, Bading; Li, Shanlu; Gao, Donglin; Chen, Tianyuan; Cong, Lu; Zhang, Jinhu; Cheng, Xiali
通讯作者	An, FY (corresponding author), Qinghai Normal Univ, Key Lab Phys Geog & Environm Proc Qinghai Prov, Sch Geog Sci, Xining, Peoples R China. ; An, FY (corresponding author), Minist Educ, Key Lab Tibetan Plateau Land Surface Proc & Ecol, Xining, Peoples R China. ; An, FY (corresponding author), Qinghai Normal Univ, Acad Plateau Sci & Sustainabil, Xining, Peoples R China. ; Li, SL (corresponding author), China Natl Geol Explorat Ctr Bldg Mat Ind, Qinghai Branch, Xining, Peoples R China.
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2021
卷号	9
英文摘要	The origin of alluvial fans at the drainage basin or the margins of the arid sedimentary basin on the northeastern Tibetan Plateau (NETP) has been a focus of debate among scientific communities. Extensive alluvial fans had developed in the mountain-basin systems of this region during the late Pleistocene. Based on geomorphic/stratigraphic studies and the optically stimulated luminescence (OSL) chronology, we investigated numerous alluvial sequences in the drainage basin of the coupled mountain-basin system on the NETP. Sedimentologic analyses showed that these alluvial sediments mainly comprise crudely meter and decimeter beds of fanglomerate and sandy lenticles, which occasionally contain boulders in the thinner layers. OSL dating results showed that the alluvial sediments were mainly developed during the late MIS 5, MIS 3, and Last Glaciation and Deglaciation (maximum aggradations), while little had occurred during the early Holocene. Comparing our ages and their probability density curves with those of glacial advances from the northeastern/eastern TP, the consistency of both records during different stages since the late Pleistocene suggested that the development of alluvial fans was driven by glacier activities, which yielded abundant outwash, feeding alluvial aggradations. Based on this finding, together with results of previous studies, we argued that the dynamics of alluvial geomorphic processes had a paleoclimatic origin rather than surface uplifts. Further studies indicated that the precipitation of glaciations originated from the ISM northward intrusion during the late MIS 5, MIS 3, and Holocene; however, it was mainly influenced by the westerlies during the Last Glaciation and Deglaciation. Therefore, the development of alluvial fans on the NETP represents coupling signals of the ISM and the westerlies on the interglacial-glacial cycle timescales. The coupling evolution of glacier activities and alluvial aggradations in the drainage basins of mountain-basin systems on the NETP provides a model for assessing the linkages between regional geomorphic processes and atmospheric circulations on hemispheric scales.
英文关键词	alluvial fans optically stimulated luminescence dating glacier activities moisture source Northeastern Tibetan Plateau
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000683309300001
WOS关键词	LAKE LEVEL VARIATIONS ; SUMMER MONSOON ; QINGHAI LAKE ; DAMMED LAKE ; KUNLUN MOUNTAINS ; CLIMATIC-CHANGE ; QAIDAM BASIN ; SALT LAKE ; SLIP-RATE ; RIVER
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368610
作者单位	[An, Fuyuan; Qiuying, Bading; Zhang, Jinhu; Cheng, Xiali] Qinghai Normal Univ, Key Lab Phys Geog & Environm Proc Qinghai Prov, Sch Geog Sci, Xining, Peoples R China; [An, Fuyuan; Qiuying, Bading; Zhang, Jinhu] Minist Educ, Key Lab Tibetan Plateau Land Surface Proc & Ecol, Xining, Peoples R China; [An, Fuyuan; Qiuying, Bading; Zhang, Jinhu] Qinghai Normal Univ, Acad Plateau Sci & Sustainabil, Xining, Peoples R China; [Li, Shanlu] China Natl Geol Explorat Ctr Bldg Mat Ind, Qinghai Branch, Xining, Peoples R China; [Gao, Donglin; Chen, Tianyuan; Cong, Lu] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Peoples R China
推荐引用方式 GB/T 7714	An, Fuyuan,Qiuying, Bading,Li, Shanlu,et al. Glacier-Induced Alluvial Fan Development on the Northeast Tibetan Plateau Since the Late Pleistocene[J],2021,9.
APA	An, Fuyuan.,Qiuying, Bading.,Li, Shanlu.,Gao, Donglin.,Chen, Tianyuan.,...&Cheng, Xiali.(2021).Glacier-Induced Alluvial Fan Development on the Northeast Tibetan Plateau Since the Late Pleistocene.FRONTIERS IN EARTH SCIENCE,9.
MLA	An, Fuyuan,et al."Glacier-Induced Alluvial Fan Development on the Northeast Tibetan Plateau Since the Late Pleistocene".FRONTIERS IN EARTH SCIENCE 9(2021).