气候变化领域集成服务门户(CCPortal): Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution

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DOI	10.1016/j.geomorph.2017.09.008
	Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution
	Zhang Weilin; Zhang Tao; Song Chunhui; Appel, Erwin; Mao Ziqiang; Fang Yahui; Lu Yin; Meng Qingquan; Yang Rongsheng; Zhang Dawen; Li Bingshuai; Li Jiao
通讯作者	Zhang, WL (通讯作者)
发表日期	2017
ISSN	0169-555X
EISSN	1872-695X
起始页码	86
结束页码	99
卷号	297
英文摘要	The Xining Basin in northern China lies topographically in the transitional zone between the Tibetan Plateau and the Loess Plateau, and climatically in the transitional zone between humid East Asia and the arid Asian interior. During the Cenozoic, the basin accumulated a thick, continuous sequence of fluviolacustrine-dominated red beds and subsequent eolian loess. The termination of sediment deposition in the Xining Basin is the key to understanding its subsequent evolution, the development of the modern Yellow River, and the history of dust deposition. Here we present the results of a detailed paleomagnetic study of the upper sedimentary sequence of the Xining Basin below the river terraces, and in addition we review previous studies of river evolution development. Our results indicate that the age of the uppermost part of the continuous sequence of fluviolacustrine-dominated red beds in the Xining Basin ranges from ca. 20 Ma to 4.8 Ma, suggesting that basin sedimentation ended at the earliest at 4.8 Ma, and they also provide an earliest age constraint for the subsequent river terrace development and eolian dust deposition. In addition, these results demonstrate that the termination of sedimentation in the Xining Basin and the nearby Linxia Basin was approximately coeval, suggesting the rapid regional tectonic uplift of the NE Tibetan Plateau and resulting reorganization of the landforms and development of the paleo-Yellow River in the late Pliocene. (C) 2017 Elsevier B.V. All rights reserved.
关键词	RESOLUTION MAGNETO STRATIGRAPHY ALTYN-TAGH FAULT YELLOW-RIVER ENVIRONMENTAL-CHANGES CENOZOIC EVOLUTION QINGHAI PROVINCE TECTONIC UPLIFT POLLEN RECORD LOESS PLATEAU QAIDAM BASIN
英文关键词	River terrace; Fluviolacustrine red beds; Xining Basin; Northeastern Tibetan Plateau
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000414818800006
来源期刊	GEOMORPHOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258977
推荐引用方式 GB/T 7714	Zhang Weilin,Zhang Tao,Song Chunhui,et al. Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution[J]. 中国科学院青藏高原研究所,2017,297.
APA	Zhang Weilin.,Zhang Tao.,Song Chunhui.,Appel, Erwin.,Mao Ziqiang.,...&Li Jiao.(2017).Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution.GEOMORPHOLOGY,297.
MLA	Zhang Weilin,et al."Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution".GEOMORPHOLOGY 297(2017).