气候变化领域集成服务门户(CCPortal): Using mineralogy and Sr-Nd isotopes of gypsum to constrain the provenance of sediments in the western Qaidam Basin, northern Tibetan Plateau: Implications for neo-tectonic activities

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DOI	10.1016/j.jseaes.2021.104983
	Using mineralogy and Sr-Nd isotopes of gypsum to constrain the provenance of sediments in the western Qaidam Basin, northern Tibetan Plateau: Implications for neo-tectonic activities
	Li, Minghui; Fang, Xiaomin; Wang, Zhengrong; Li, Jiao; Yan, Maodu; Galy, Albert; Wang, Jiuyi; Lu, Shuyi; Zhu, Liping
通讯作者	Li, MH (通讯作者)
发表日期	2022
ISSN	1367-9120
EISSN	1878-5786
卷号	223
英文摘要	The extremely thick sedimentary sequence in the Qaidam Basin, northeastern Tibetan Plateau (TP) is closely related to the uplift of the TP. Due to the scarcity of minerals that can be dated continuously, little is known about the isotopic responses of the minerals in this area to the changes in the weathering and sources over a long time period. A 938.5-m long core (magnetostratigraphic age of ~ 2.8-0.1 Ma) was drilled in the western Qaidam Basin in 2008. The mineralogy and isotopic compositions of gypsum in this core were investigated. The gypsum recorded the primary information about the brine that formed during ~ 2.8-0.1 Ma. The variations in the Sr isotopes (0.709817-0.714473, average of 0.711249) and Nd (0.512114-0.512614, average of 0.512184) of the gypsum samples suggest that the weathering products of the rocks in the Kunlun and Altyn mountains (Mts) likely exerted a strong control on the Sr-Nd isotopes of the lakes. The climate and the Sr content/isotopic compositions of the gypsum samples were affected by the regional tectonic activities throughout the evolution of the paleolake since 2.8 Ma. The results of this study demonstrate that Sr-Nd isotopes are useful tools for investigating the origins of evaporite deposits and the interactions between tectonic activities and climate change.
关键词	EAST KUNLUN OROGEN NW CHINA PETROGENESIS CENTRAL QILIAN BLOCK U-PB GEOCHRONOLOGY BACK-ARC EXTENSION CORE SG-1 EVAPORITE MINERALS QINGHAI PROVINCE METAMORPHIC BELT CLIMATE-CHANGE
英文关键词	Salt minerals; Isotopes; Primary and secondary minerals; Weathering; Climatic changes
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000712433600002
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
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/260765
推荐引用方式 GB/T 7714	Li, Minghui,Fang, Xiaomin,Wang, Zhengrong,et al. Using mineralogy and Sr-Nd isotopes of gypsum to constrain the provenance of sediments in the western Qaidam Basin, northern Tibetan Plateau: Implications for neo-tectonic activities[J]. 中国科学院青藏高原研究所,2022,223.
APA	Li, Minghui.,Fang, Xiaomin.,Wang, Zhengrong.,Li, Jiao.,Yan, Maodu.,...&Zhu, Liping.(2022).Using mineralogy and Sr-Nd isotopes of gypsum to constrain the provenance of sediments in the western Qaidam Basin, northern Tibetan Plateau: Implications for neo-tectonic activities.JOURNAL OF ASIAN EARTH SCIENCES,223.
MLA	Li, Minghui,et al."Using mineralogy and Sr-Nd isotopes of gypsum to constrain the provenance of sediments in the western Qaidam Basin, northern Tibetan Plateau: Implications for neo-tectonic activities".JOURNAL OF ASIAN EARTH SCIENCES 223(2022).