A late Miocene ostracod record from the northeastern Tibetan Plateau

doi:10.1007/s10933-018-0060-x

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	A late Miocene ostracod record from the northeastern Tibetan Plateau
	Lu, Fengyan; An, Zhisheng; Dodson, John; Li, Xiangzhong; Yan, Hong
通讯作者	Lu, Fengyan(lfy@ieecas.cn)
	2019-03-01
发表期刊	JOURNAL OF PALEOLIMNOLOGY
ISSN	0921-2728
卷号	61 期号:3 页码:297-312
摘要	Lake Qinghai, the largest inland brackish lake in China, is located on the northeastern margin of the Tibetan Plateau and is affected by both the Asian Monsoon and Westerlies climate systems. It is very sensitive to climate and environmental changes. Moreover, its sediments accumulated over the Cenozoic Era and contain abundant information about past tectonics and environmental changes. Here we present a record of late Miocene ostracods from Lake Qinghai sediment cores. A taxonomic analysis of the ostracods yielded 7 families, 14 genera, and 31 species. Six distinct sediment facies were recognized and their corresponding paleolimnological and paleoenvironmental changes were inferred from the ostracod assemblages. The first appearance of ostracod shells at about 7.60Ma reflects a switch from an eolian sedimentation facies (ca. 8.10-7.60Ma) to a shallow lacustrine environment (ca. 7.60-5.85Ma). Ostracod shells were absent from ca. 5.85 to 4.64Ma in eolian sediments. A transition to a deep lacustrine facies began at ca. 4.64Ma, and ended at ca. 3.58Ma. Thus, Lake Qinghai existed in the late Miocene and became larger and deeper in the early Pliocene (ca. 4.64Ma). During the time interval ca. 3.58-0.70Ma, littoral lacustrine sedimentation occurred at the core sites. After ca. 0.70Ma, there were alternating shallow lacustrine and lakeshore environments at the sites, until ca. 0.12Ma. Changes in ostracod assemblages and their abundance during the intervals ca. 4.64-3.56Ma and ca. 0.70-0.12Ma indicate that the sedimentary environment fluctuated over short time scales. Given Lake Qinghai's sensitivity to environmental and tectonic changes, related to its special location, we concluded that changes in the relative and absolute abundances of ostracods reflect the evolution of the Asian monsoon-arid environment and Plateau growth, as well as global climate changes.
关键词	Ostracoda Tibetan Plateau Late Miocene Taxonomy Paleolimnology
DOI	10.1007/s10933-018-0060-x
关键词[WOS]	OXYGEN-ISOTOPE RECORD ; LAKE QINGHAI ; ENVIRONMENTAL-CHANGE ; WARM-PERIOD ; CHINA ; BASIN ; HOLOCENE ; UPLIFT ; RECONSTRUCTION ; CRUSTACEA
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41602191] ; National Natural Science Foundation of China[41290250] ; National Natural Science Foundation of China[41420104008] ; National Key Funds of China[2013CB955900] ; Chinese Academy of Sciences[QYZDY-SSW-DQC001] ; Chinese Academy of Sciences[ZDBS-SSW-DQC001]
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
项目资助者	National Natural Science Foundation of China ; National Key Funds of China ; Chinese Academy of Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Limnology
WOS记录号	WOS:000461388400003
出版者	SPRINGER
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14279
专题	现代环境研究室
通讯作者	Lu, Fengyan
作者单位	Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Lu, Fengyan,An, Zhisheng,Dodson, John,et al. A late Miocene ostracod record from the northeastern Tibetan Plateau[J]. JOURNAL OF PALEOLIMNOLOGY,2019,61(3):297-312.
APA	Lu, Fengyan,An, Zhisheng,Dodson, John,Li, Xiangzhong,&Yan, Hong.(2019).A late Miocene ostracod record from the northeastern Tibetan Plateau.JOURNAL OF PALEOLIMNOLOGY,61(3),297-312.
MLA	Lu, Fengyan,et al."A late Miocene ostracod record from the northeastern Tibetan Plateau".JOURNAL OF PALEOLIMNOLOGY 61.3(2019):297-312.