DOI: 10.1016/j.quascirev.2018.08.002
Scopus记录号: 2-s2.0-85051257944
论文题名: Quaternary paleoenvironmental evolution of the Tengger Desert and its implications for the provenance of the loess of the Chinese Loess Plateau
作者: Fan Y. ; Mou X. ; Wang Y. ; Liu C. ; Zhao H. ; Wang F. ; Li Z. ; Mao X. ; Liu W. ; Ma J. ; Liu C. ; Zhang F. ; Zhang F.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 197 起始页码: 21
结束页码: 34
语种: 英语
英文关键词: Dust source
; Paleoenvironment
; Quaternary
; Tengger Desert
Scopus关键词: Arid regions
; Core drilling
; Deposits
; Dust
; Lithology
; Magnetic moments
; Magnetic susceptibility
; Sedimentology
; Sediments
; Asian summer monsoons
; Chinese Loess Plateau
; Dust sources
; Electron spin resonance dating
; Paleo-environment
; Quaternary
; Sedimentary sequence
; Tengger Desert
; Landforms
; blueschist facies
; brood desertion
; dust
; evolution
; facies analysis
; lacustrine deposit
; magnetic survey
; magnetic susceptibility
; magnetostratigraphy
; micropaleontology
; paleoenvironment
; Pleistocene
; provenance
; Quaternary
; sedimentary sequence
; China
; Gobi Desert
; Loess Plateau
; Qinghai-Xizang Plateau
; Tengger Desert
英文摘要: The dust sources of the loess deposits of the Chinese Loess Plateau (CLP) are suggested to be the Gobi-deserts in north China and the Tibetan Plateau in southwest China. The Tengger Desert (TD), a major desert situated to the northeast of the Tibetan Plateau and to the northwest of the CLP, on the western margin of the present-day Asian Summer Monsoon domain, is an ideal area for assessing which of these potential dust source areas may be dominant. A 104-m-long drill core (BJ14) was obtained from the northwestern TD. The magnetostratigraphy, constrained by electron spin resonance dating in the upper part of the core, includes the Brunhes, Matuyama and beginning of the Gauss polarity chrons, with their boundaries at the depths of 44.57 m and 94.31 m, respectively. Sedimentary facies analysis based on lithological, grain-size, magnetic susceptibility and micropaleontological evidences indicates that the core is primarily composed of lacustrine deposits. Combined with the results of previous studies in the eastern TD and the adjacent regions, the sedimentary sequence of core BJ14 indicates that lakes occupied the northern and eastern TD during most of the early Pleistocene and that the onset of a desert environment occurred at ∼0.9 Ma. Our results suggest that the TD may have contributed only a limited amount of dust to the CLP during the early Pleistocene. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112071
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Mineral Resources in Western China (Gansu Province), School of Earth Sciences, Lanzhou University, China; Key Laboratory of Western China's Environmental Systems, Ministry of Education, College of Earth and Environmental Sciences, Lanzhou University, China; North-west Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou, 730000, China; Institute of Geology, China Earthquake Administration, Beijing, 100029, China
Recommended Citation:
Fan Y.,Mou X.,Wang Y.,et al. Quaternary paleoenvironmental evolution of the Tengger Desert and its implications for the provenance of the loess of the Chinese Loess Plateau[J]. Quaternary Science Reviews,2018-01-01,197