气候变化领域集成服务门户(CCPortal): Neodymium isotopic constraints on Cenozoic Asian dust provenance changes linked to the exhumation history of the northern Tibetan Plateau and the Central Asian Orogenic Belt

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DOI	10.1016/j.gca.2020.12.026
	Neodymium isotopic constraints on Cenozoic Asian dust provenance changes linked to the exhumation history of the northern Tibetan Plateau and the Central Asian Orogenic Belt
	Yang, Yibo; Galy, Albert; Fang, Xiaomin; Yang, Rongsheng; Zhang, Wenfang; Song, Bowen; Liu, Yudong; Han, Wenxia; Zhang, Weilin; Yang, Song
通讯作者	Yang, YB ; Fang, XM (通讯作者)
发表日期	2021
ISSN	0016-7037
EISSN	1872-9533
起始页码	38
结束页码	55
卷号	296
英文摘要	The arid interior of Asia is the largest source of dust deposited in the North Pacific Ocean, and some dust is even transported to Greenland. Investigating the provenance history of Asian dust can provide strong constraints on the evolution of topography and climate in the Asian interior. Eolian dust Nd isotopic records preserved in North Pacific Ocean sediments since similar to 40 Ma provide a spatially integrated first-order constraint on the provenance changes of Asian dust. However, a lack of similarly long dust Nd isotopic records from Asian dust source areas, namely, the northern Tibetan Plateau and the Central Asian Orogenic Belt, has hindered a full understanding of Asian dust provenance changes linked to the Cenozoic evolution of tectonics, climate and topography in inland Asia. Here, we have constructed the first fine-grained and whole-rock Nd isotopic records from sediments deposited on the northern Tibetan Plateau since similar to 52 Ma. The results indicate two major changes, a gradual increase in epsilon(Nd)(0) values between similar to 42 Ma and similar to 25 Ma and a general decrease since similar to 25 Ma, which were probably caused by the incremental northward growth of the Tibetan Plateau. Further mass balance estimates based on comparisons between the Nd isotopic characteristics of dust from the northern Tibetan Plateau and the North Pacific Ocean indicate that a rapid increase in the contribution of the Central Asian Orogenic Belt to Asian dust at similar to 25 Ma can be closely linked to rapid exhumation caused by tectonic uplift and aridification in inland Asia. Our provenance analyses, together with the onset of eolian sediment in central and eastern Asia, suggest that a modern-like regime promoting Asian dust emissions and transport might have been in place since the late Oligocene. (C) 2021 Elsevier Ltd. All rights reserved.
关键词	TARIM BASIN IMPLICATIONS CHINESE LOESS PLATEAU TECTONIC EVOLUTION EOLIAN DEPOSITION QAIDAM BASIN LINXIA BASIN BOUNDARY EXCHANGE RIVER CHEMISTRY PACIFIC-OCEAN XINING BASIN
英文关键词	Xining Basin; Linxia Basin; Tarim Basin; Late Oligocene; Tectonic uplift; Central Asian drying; North Pacific Ocean
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000623916400003
来源期刊	GEOCHIMICA ET COSMOCHIMICA ACTA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260490
推荐引用方式 GB/T 7714	Yang, Yibo,Galy, Albert,Fang, Xiaomin,et al. Neodymium isotopic constraints on Cenozoic Asian dust provenance changes linked to the exhumation history of the northern Tibetan Plateau and the Central Asian Orogenic Belt[J]. 中国科学院青藏高原研究所,2021,296.
APA	Yang, Yibo.,Galy, Albert.,Fang, Xiaomin.,Yang, Rongsheng.,Zhang, Wenfang.,...&Yang, Song.(2021).Neodymium isotopic constraints on Cenozoic Asian dust provenance changes linked to the exhumation history of the northern Tibetan Plateau and the Central Asian Orogenic Belt.GEOCHIMICA ET COSMOCHIMICA ACTA,296.
MLA	Yang, Yibo,et al."Neodymium isotopic constraints on Cenozoic Asian dust provenance changes linked to the exhumation history of the northern Tibetan Plateau and the Central Asian Orogenic Belt".GEOCHIMICA ET COSMOCHIMICA ACTA 296(2021).