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	Geochemistry of Middle Holocene Sediments from South Yellow Sea: Implications to Provenance and Climate Change
	Lu Xiaoxia; Versteegh Gerard J M; Song Jinming; Li Xuegang; Yuan Huamao; Li Ning
来源期刊	Journal of Earth Science
ISSN	1674-487X
出版年	2016
卷号	27 期号:5 页码:751-762
英文摘要	From a large number of case studies on terrestrial deposits we know that Late Holocene climate fluctuations have an important impact on the terrestrial environments. However, it is hitherto not clear how the marine sediments can be used to shed light on the environment and climate change of the catchment. To provide such insight, we used the major element, trace element and rare earth element(REE)compositions in the southern Yellow Sea(SYS)sediments to reconstruct the changes in weathering and erosion of their source regions. The sediments originate predominantly from the upper crust of East China and are transported into the basin especially by the Yellow River(Huanghe)and to a lesser extent by the Yangtze River(Changjiang). The chemical index of alteration(CIA; 53.7-59.7)suggests low chemical weathering of the source rocks since the Middle Holocene. This is consistent with the relatively cool and arid climate in North China after the Holocene Megathermal. Comparison of element ratios, including Al/Ca, K/Ca, Al/Na, K/Na, Rb/Sr, Li/Ba and the CIA shows that we can use the latter as a robust proxy for climate change. The CIA-based mean annual precipitation and mean annual temperature show a series of climate fluctuations in the catchment. A relatively warm and humid Period I(5.3-2.9 cal. ka BP), a relatively cool and dry Period II(2.9-0.9 cal. ka BP)and an increasingly cool and dry Period III(0.9-0.3 cal. ka BP). These periods can be linked to climate intervals recognized elsewhere.
英文关键词	geochemical composition elemental ratio climate change provenance South Yellow Sea sediment
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Oceanography
CSCD记录号	CSCD:5825447
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335707
作者单位	Lu Xiaoxia, Faculty of Marine Sciences, China University of Geosciences (Wuhan), State Key Laboratory of Biogeology and Environmental Geology, Wuhan, Hubei 430074, China.; Versteegh Gerard J M, Heisenberg Group on Marine Kerogen, Center for Marine Environmental Sciences (MARUM), Bremen University, Bremen D-28359, Germany.; Song Jinming, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266072, China.; Li Xuegang, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266072, China.; Yuan Huamao, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266072, China.; Li Ning, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, Shandong 266072, China.
推荐引用方式 GB/T 7714	Lu Xiaoxia,Versteegh Gerard J M,Song Jinming,et al. Geochemistry of Middle Holocene Sediments from South Yellow Sea: Implications to Provenance and Climate Change[J],2016,27(5):751-762.
APA	Lu Xiaoxia,Versteegh Gerard J M,Song Jinming,Li Xuegang,Yuan Huamao,&Li Ning.(2016).Geochemistry of Middle Holocene Sediments from South Yellow Sea: Implications to Provenance and Climate Change.Journal of Earth Science,27(5),751-762.
MLA	Lu Xiaoxia,et al."Geochemistry of Middle Holocene Sediments from South Yellow Sea: Implications to Provenance and Climate Change".Journal of Earth Science 27.5(2016):751-762.