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学科主题: 地球科学::地质学
题名: Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution
作者: Zhang, WL (Zhang Weilin)1, 2; Zhang, T (Zhang Tao)1, 2; Song, CH (Song Chunhui)3, 4; Appel, E (Appel, Erwin)5; Mao, ZQ (Mao Ziqiang)1, 2; Fang, YH (Fang Yahui)1, 2; Lu, Y (Lu Yin)1, 2; Meng, QQ (Meng Qingquan)3, 4; Yang, RS (Yang Rongsheng)1, 2; Zhang, DW (Zhang Dawen)1, 2; Li, BS (Li Bingshuai)1, 2; Li, J (Li Jiao)1, 2
通讯作者: Zhang, WL
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
刊名: GEOMORPHOLOGY
发表日期: 2017
DOI: 10.1016/j.geomorph.2017.09.008
卷: 297, 期:0, 页:86-99
合作性质: 国际
文章类型: Article
类目[WOS]: Geography, Physical; Geosciences, Multidisciplinary
研究领域[WOS]: Physical Geography; Geology
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.
语种: 英语
WOS记录号: WOS:000414818800006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7944
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Inst Tibetan Plateau Res, Beijing 100010, Peoples R China.
2.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Beijing 100010, Peoples R China.
3.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China.
4.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou 730000, Gansu, Peoples R China.
5.Univ Tubingen, Dept Geosci, Holderlinstr 12, D-72074 Tubingen, Germany.

Recommended Citation:
Zhang, WL ,Zhang, T ,Song, CH ,et al. Termination of fluvial-alluvial sedimentation in the Xining Basin, NE Tibetan Plateau, and its subsequent geomorphic evolution[J]. GEOMORPHOLOGY,2017,297(0):86-99.
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