干旱区生态环境知识资源中心(Arid): Geochemical record of rapid climate change and chemical weathering in a semi-arid area, northeastern Tibetan Plateau

Arid

DOI	10.1007/s12303-019-0049-0
	Geochemical record of rapid climate change and chemical weathering in a semi-arid area, northeastern Tibetan Plateau
	Zhang Wenxiang 1; Zhang Hucai 2; Niu Jie 1; Lei Guoliang 3; Chang Fengqin 1,2
通讯作者	Chang Fengqin
来源期刊	GEOSCIENCES JOURNAL
ISSN	1226-4806
EISSN	1598-7477
出版年	2020
卷号	24 期号:6 页码:723-732
英文摘要	Lacustrine deposits can provide insight into chemical weathering and climate change. Based on the analysis of the element concentrations and parameters of the acid-leaching residual fractions (AR) in the lacustrine deposits of the Qaidam Basin (QB), chemical weathering and paleoclimate changes in the northeastern Tibetan Plateau (NETP) have been studied. The results show that the characteristics of trace element concentrations exhibit two kinds of patterns by normalized element arbitrary units (a.u.). The rare earth element (REE) distribution patterns are moderately rich in light rare earth elements (LREEs) with slightly right-tilting and negative Eu anomalies. Triangular plots of the REEs and (La/Yb)(n)-sigma REE suggest that the sediments have a similar source. The geochemical records of climate proxies indicated warm-wet climate stages during 45.1-31.6 cal. ka BP., further proving that a megalake stage existed in the semi-arid area in marine isotope stage (MIS) 3. Strong evaporation resulted in a high paleolake level history in the northeastern Tibetan Plateau after the late period of MIS 3. Meanwhile, the geochemical records of the Qaidam Basin are synchronous with the global records.
英文关键词	lacustrine deposit trace elements and REEs geochemical weathering rapid climate change northeast Tibetan Plateau
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000528517700001
WOS关键词	SHELL BAR SECTION ; QAIDAM BASIN ; PROVENANCE ; EVOLUTION ; SEDIMENT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314617
作者单位	1.Yunnan Normal Univ, Yunnan Key Lab Plateau Geog Proc & Environm Chang, 1 Yuhua Dist, Kunming 650500, Yunnan, Peoples R China; 2.Yunnan Univ, Inst Plateau Lake Ecol & Management, Kunming 650091, Yunnan, Peoples R China; 3.Fujian Normal Univ, Sch Geog Sci, Fuzhou 350007, Peoples R China
推荐引用方式 GB/T 7714	Zhang Wenxiang,Zhang Hucai,Niu Jie,et al. Geochemical record of rapid climate change and chemical weathering in a semi-arid area, northeastern Tibetan Plateau[J],2020,24(6):723-732.
APA	Zhang Wenxiang,Zhang Hucai,Niu Jie,Lei Guoliang,&Chang Fengqin.(2020).Geochemical record of rapid climate change and chemical weathering in a semi-arid area, northeastern Tibetan Plateau.GEOSCIENCES JOURNAL,24(6),723-732.
MLA	Zhang Wenxiang,et al."Geochemical record of rapid climate change and chemical weathering in a semi-arid area, northeastern Tibetan Plateau".GEOSCIENCES JOURNAL 24.6(2020):723-732.