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DOI	10.1016/j.quascirev.2019.106042
	A constant Chinese Loess Plateau dust source since the late Miocene
	Bird A.; Millar I.; Rodenburg T.; Stevens T.; Rittner M.; Vermeesch P.; Lu H.
发表日期	2020
ISSN	0277-3791
卷号	227
英文摘要	The Pliocene-Pleistocene boundary marks a major change in global climate and East Asian monsoon dynamic. However, the role of the global atmospheric dust-cycle over this time is unclear; in particular the degree to which changes in the dust cycle influenced climate change, were driven by climate change, and how these processes interacted. Chinese loess records past dust-cycle history and the influences of aridification and monsoon circulation over the last 40 Ma. Previous work on the Chinese Loess Plateau argue over whether changes in dust source occur at the Pliocene-Pleistocene boundary, or at 1.2 Ma, despite these intervals marking major shifts in monsoon dynamics. We present Sr, Nd and Hf isotope data from multiple sites and show that dust source largely remains unchanged across these boundaries. Shifts in geochemistry are due to changes in grain-size and weathering. While the transport pathway (river, deserts, direct aeolian) is unclear, these tracer isotopes show that dust was dominantly sourced from the Northern Tibetan Plateau, with some input from the local bedrock. This shows that a major established and constant dust source on the Tibetan Plateau has been active and unchanged since late Miocene, despite dramatically changing climate conditions. Changes in loess accumulation are a function of climate change in Tibetan Plateau source regions rather than effects from increased aridification over the Pliocene-Pleistocene boundary. © 2019 The Authors
英文关键词	China; Loess; Neogene; Palaeoclimate; Quaternary; Radiogenic isotopes
语种	英语
scopus关键词	Arid regions; Atmospheric thermodynamics; Dust; Isotopes; Landforms; Sediments; China; Loess; Neo genes; Palaeoclimate; Quaternary; Radiogenic isotopes; Climate change; aridification; climate variation; geoaccumulation; loess; Neogene; Pliocene-Pleistocene boundary; radionuclide; China; Loess Plateau; Qinghai-Xizang Plateau
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151653
作者单位	School of Environment Sciences, University of Hull, Hull, HU6 7RX, United Kingdom; Department of Geography, Royal Holloway University of London, Egham, Surrey, TW20 0EX, United Kingdom; NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, United Kingdom; Department of Earth Sciences, Uppsala University, Geocentrum, Villav. 16, Uppsala, 752 36, Sweden; Department of Earth Sciences, University College London, London, WC1E 6BT, United Kingdom; School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China
推荐引用方式 GB/T 7714	Bird A.,Millar I.,Rodenburg T.,et al. A constant Chinese Loess Plateau dust source since the late Miocene[J],2020,227.
APA	Bird A..,Millar I..,Rodenburg T..,Stevens T..,Rittner M..,...&Lu H..(2020).A constant Chinese Loess Plateau dust source since the late Miocene.Quaternary Science Reviews,227.
MLA	Bird A.,et al."A constant Chinese Loess Plateau dust source since the late Miocene".Quaternary Science Reviews 227(2020).