DOI: 10.1016/j.quascirev.2012.11.032
Scopus记录号: 2-s2.0-84885183300
论文题名: Genetic linkage between the Yellow River, the Mu Us desert and the Chinese Loess Plateau
作者: Stevens T. ; Carter A. ; Watson T.P. ; Vermeesch P. ; Andò S. ; Bird A.F. ; Lu H. ; Garzanti E. ; Cottam M.A. ; Sevastjanova I.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 78 起始页码: 355
结束页码: 368
语种: 英语
英文关键词: Dust
; Heavy minerals
; Loess
; Provenance
; U-Pb
; Yellow River
; Zircon
Scopus关键词: Heavy minerals
; Loess
; Provenance
; U-Pb
; Yellow river
; Arid regions
; Dust
; Geochronology
; Lead
; Mineral exploration
; Minerals
; Rivers
; Sand
; Sediments
; Zircon
; Landforms
; arid region
; dust
; fission track dating
; fluvial deposit
; loess
; plateau
; polarization
; provenance
; Quaternary
; river system
; sand wave
; sediment transport
; semiarid region
; uranium-lead dating
; wind forcing
; zircon
; China
; Loess Plateau
; Ordos
; Xizang
; Yellow River
英文摘要: Arid and semi arid northern China holds some of the world's most significant sand sea and loess deposits. In particular, arguably the most important late Cenozoic wind-blown dust archives on land are exposed on the Chinese Loess Plateau. The origin of this loess-forming dust and its relationship to adjacent sand seas is unclear and has been the subject of considerable debate. Polarization of opinion over the sources of loess also reflects uncertainty over its relationship to large river systems and to the sources of proximal desert sands. It is critical to resolve this in order to elucidate the origins of sand seas, to determine the activity of past dust emitting regions and to fully exploit loess climate archives. Here we combine zircon U-Pb, fission-track and double dating with heavy mineral analysis to test the role of proximal deserts and rivers in contributing dust to the Loess Plateau. We focus on the Mu Us desert to test hypotheses over its sediment sources and because previous studies have often presented contrasting interpretations over its importance as a loess source. Spatial complexity of zircon ages and heavy mineral assemblages in Mu Us sand rules out significant aeolian mixing and shows that grains originating in northern Tibet dominate in the western Mu Us, with local sources dominating in the east of the desert. The western Mu Us far-travelled grains are shown to be delivered by the Yellow River and associated systems. Crucially, the western Mu Us grains and Yellow River grains show U-Pb age distributions and heavy mineral assemblages virtually identical to those of the Quaternary loess. Thus, our results demonstrate that the Yellow River and associated systems transports large quantities of sediment from northern Tibet to the Mu Us desert and further suggest that the river contributes a significant volume of material to the Loess Plateau. This provides the first evidence of a genetic link between the Yellow River and formation of the Chinese Loess Plateau and suggests a greater role for fluvial activity in past dust and desert sand sea formation. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60503
Appears in Collections: 过去全球变化的重建
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作者单位: Centre for Quaternary Research, Department of Geography, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom; Physical Geography, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia; School of Earth Sciences, Birkbeck College, University of London, London WC1E 7HX, United Kingdom; Dipartimento di Scienze Geologiche e Geotecnologie, Università di Milano-Bicocca, Piazza della Scienza 4, 20126 Milano, Italy; School of Geographic and Oceanographic Sciences, Institute for Climate and Global Change Research, Nanjing University, Nanjing 210093, China; South East Asia Research Group, Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 OEX, United Kingdom
Recommended Citation:
Stevens T.,Carter A.,Watson T.P.,et al. Genetic linkage between the Yellow River, the Mu Us desert and the Chinese Loess Plateau[J]. Quaternary Science Reviews,2013-01-01,78