气候变化领域集成服务门户(CCPortal): Global Change Modulated Asian Inland Climate Since 7.3 Ma: Carbonate Manganese Records in the Western Qaidam Basin

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DOI	10.3389/feart.2021.813727
	Global Change Modulated Asian Inland Climate Since 7.3 Ma: Carbonate Manganese Records in the Western Qaidam Basin
	Liu, Yudong; Yang, Yibo; Ye, Chengcheng; Yang, Rongsheng; Appel, Erwin; Fang, Xiaomin
通讯作者	Yang, YB (通讯作者)
发表日期	2021
EISSN	2296-6463
卷号	9
英文摘要	Late Cenozoic drying of the Asian inland has not only exerted a profound impact on the regional environment but also affected global climate as an important source of global atmospheric dust. Continuous and accurately dated sediment records from the Asian interior are pivotal to a better understanding of the evolutionary history of Asian inland drying and the associated driving mechanisms. In this study, we present a continuous record of climate change in the Asian interior spanning the past 7.3 Myr, reconstructed by the redox evolution of a paleolake in the western Qaidam Basin, NE Tibetan Plateau. The paleolake redox conditions are linked to the oxygen concentration of lake bottom water and lake level, and were revealed by the manganese (Mn) concentration in the carbonate fraction (leached by the diluted acetic acid) of the carbonate-rich lacustrine sediments retrieved from two drill-cores (SG-1 and SG-1b). The reconstructed regional climate in the western Qaidam Basin shows long-term fluctuations, consistent with the secular evolution of the coeval global climate, especially the sea surface temperature variation in the high latitude North Atlantic. Three transitions of the paleolake hydrochemical system occurred at 6.2, 5.3, and 2.6 Ma, with a short drying stage at 6.2-5.3 Ma and prolonged Quaternary drying since 2.6 Ma. We argue that drying of the Asia interior has been dominantly forced by global cooling, in particular, the high-latitude cooling of the Northern Hemisphere.
关键词	NE TIBETAN PLATEAU ISOTOPIC CONSTRAINTS CORE SG-1 GENERAL-CIRCULATION INTENSIFIED ARIDITY SEAWATER RETREAT STABLE-ISOTOPE LAKE-SEDIMENTS TRACE-METALS TARIM BASIN
英文关键词	late cenozoic; Asian inland drying; Qaidam Basin; carbonate; manganese
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000739034900001
来源期刊	FRONTIERS IN EARTH SCIENCE
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/260321
推荐引用方式 GB/T 7714	Liu, Yudong,Yang, Yibo,Ye, Chengcheng,et al. Global Change Modulated Asian Inland Climate Since 7.3 Ma: Carbonate Manganese Records in the Western Qaidam Basin[J]. 中国科学院青藏高原研究所,2021,9.
APA	Liu, Yudong,Yang, Yibo,Ye, Chengcheng,Yang, Rongsheng,Appel, Erwin,&Fang, Xiaomin.(2021).Global Change Modulated Asian Inland Climate Since 7.3 Ma: Carbonate Manganese Records in the Western Qaidam Basin.FRONTIERS IN EARTH SCIENCE,9.
MLA	Liu, Yudong,et al."Global Change Modulated Asian Inland Climate Since 7.3 Ma: Carbonate Manganese Records in the Western Qaidam Basin".FRONTIERS IN EARTH SCIENCE 9(2021).