globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.01.001
Scopus记录号: 2-s2.0-85040310690
论文题名:
Aeolian dust supply from the Yellow River floodplain to the Pleistocene loess deposits of the Mangshan Plateau, central China: Evidence from zircon U-Pb age spectra
作者: Shang Y.; Prins M.A.; Beets C.J.; Kaakinen A.; Lahaye Y.; Dijkstra N.; Rits D.S.; Wang B.; Zheng H.; van Balen R.T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 182
起始页码: 131
结束页码: 143
语种: 英语
英文关键词: End member modelling ; Grain-size ; Mangshan Plateau ; Provenance analysis ; Sanmen Gorge
Scopus关键词: Banks (bodies of water) ; Binary alloys ; Climate change ; Deposition ; Deposits ; Dust ; Floods ; Geochronology ; Grain size and shape ; Lead ; Lead alloys ; Rivers ; Silicate minerals ; Tectonics ; Uranium alloys ; Zircon ; Zircon deposits ; End-member modelling ; Grain size ; Mangshan Plateau ; Provenance analysis ; Sanmen Gorge ; Sediments ; accumulation rate ; age determination ; alluvial deposit ; climate change ; deposition ; eolian deposit ; floodplain ; grain size ; loess ; numerical model ; paleosol ; Pleistocene ; provenance ; Quaternary ; sediment transport ; uranium-lead dating ; zircon ; China ; Loess Plateau ; Sanmen Bay ; Wei Basin ; Yellow River ; Zhejiang
英文摘要: The thick loess-palaeosol sequences in the Mangshan Loess Plateau (MLP; central China) along the south bank of the lower reach of the Yellow River provide high-resolution records of Quaternary climate change. In addition, substantial increases in grain-size and accumulation rate have been inferred in the upper part of the loess sequence, above palaeosol layer S2. This study investigates the sources of the long-term dust supply to the MLP and explores the mechanism behind the sudden increase in sediment delivery and coarsening of the loess deposits since S2 (∼240 ka) by using end member modelling of the loess grain-size dataset and single-grain zircon U-Pb dating. Our results indicate that the lower Yellow River floodplain, directly north of the MLP, served as a major dust supply for the plateau at least since the deposition of loess unit L9 and indirectly suggest that the integration of the Yellow River and the disappearance of the Sanmen palaeolake took place before L9 (∼900 ka). The sudden change in sedimentology of the Mangshan sequence above palaeosol unit S2 may result from an increased fluvial sediment flux being transported to the lower reaches of the Yellow River because of tectonic movements (initiated) in the Weihe Basin around 240 ka. Furthermore, sediment coarsening can be explained by the gradual southward migration of the lower Yellow River floodplain towards the MLP since the deposition of palaeosol S2. The migration is evidenced by the formation of an impressive scarp, and is likely caused by tectonic tilting of the floodplain area. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112304
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作者单位: Department of Geosciences and Geography, University of Helsinki, P.O. Box 6400014, Finland; Department of Earth Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1085, Amsterdam, HV 1081, Netherlands; Geological Survey of Finland (GTK), Betonimiehenkuja 4, Espoo, 02150, Finland; School of Geography and Tourism, Shaanxi Normal University, Xi'an, 710119, China; School of Resource, Environment and Earth Science, Yunnan University, Kunming, 650500, China; TNO-Geological Survey of the Netherlands, Princetonlaan 6, Utrecht, CB 3584, Netherlands; Department of Geosciences, UiT the Arctic University of Norway in Tromsø, Dramsveien 201, Tromsø, 9037, Norway

Recommended Citation:
Shang Y.,Prins M.A.,Beets C.J.,et al. Aeolian dust supply from the Yellow River floodplain to the Pleistocene loess deposits of the Mangshan Plateau, central China: Evidence from zircon U-Pb age spectra[J]. Quaternary Science Reviews,2018-01-01,182
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