A Late-Eocene palynological record from the Hoh Xil Basin, northern Tibetan Plateau, and its implications for stratigraphic age, paleoclimate and paleoelevation

doi:10.1016/j.gr.2015.01.007

IVPP-IR > 中科院古脊椎所（2000年以后）

	A Late-Eocene palynological record from the Hoh Xil Basin, northern Tibetan Plateau, and its implications for stratigraphic age, paleoclimate and paleoelevation
	Miao, Yunfa 1; Wu, Fuli 2,3; Chang, Hong 4; Fang, Xiaomin 2,3; Deng, Tao5 ; Sun, Jimin 6; Jin, Chunsheng 6
	2016-03-01
发表期刊	GONDWANA RESEARCH
卷号	31 页码:241-252
文章类型	Article
摘要	The Hoh Xil Basin, lying in the central Tibetan Plateau, is key to understanding the Cenozoic tectonics, paleoelevation and paleoclimate changes that have occurred in the Tibetan Plateau since the collision of the Indian and Asian tectonic plates. However, the stratigraphic age and paleoelevation indicated by the sediments of the Hoh Xil Basin remain hotly debated. Here we report on one palynological record from the TTH-C section, extracted from the Yaxicuo Group (the stratigraphic unit between the Fenghuoshan and Wudaoliang groups), and analyze its implications for stratigraphic age, paleoclimate and paleoelevation in the Hoh Xil Basin. The record shows that palynological taxa are mainly dominated by xerophytic Ephedripites, Nitrariadites (Nitrariapollis) and Chenopodipollis, with few ferns and conifers. Rich morphologies correspond well with those in the Xia Ganchaigou Formation (Fm) of the Qaidam Basin to the north. Palynological percentages are well correlated with the middle member of the Xia Ganchaigou Fm in the Qaidam Basin as well as the lower member of the Mahalagou Fm in the Xining Basin to the northeast. The ages of the middle member of the Xia Ganchaigou and lower member of the Mahalagou Fms from these two basins are both identical to the Bartonian Stage (similar to 40-37 Ma) of the Late Eocene, according to their respective high-resolution magnetostratigraphic dating. This means that the age of the Yaxicuo Group at least covers the Bartonian Stage. Besides the Qaidam and Xining basins, the palynological assemblages of the TTH-C section are also similar to those of three other sites (the Jiuquan, Tu-ha and Hetao basins), indicating similarly arid climates dominated by a northwestern Chinese subtropical high, and a relatively low paleoelevation in the Hoh Xil Basin (mostly <2000 m a.s.l.) in the Late Eocene. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
关键词	Tibetan Plateau Palynology Late Eocene Paleoclimate Paleoelevation
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1016/j.gr.2015.01.007
关键词[WOS]	CENOZOIC TECTONIC EVOLUTION ; EAST-WEST EXTENSION ; QAIDAM BASIN ; CLIMATE-CHANGE ; ENVIRONMENTAL-CHANGES ; FENGHUOSHAN GROUP ; NORTHWEST CHINA ; SURFACE POLLEN ; SOUTHERN TIBET ; LUNPOLA BASIN
收录类别	SCI
语种	英语
项目资助者	Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03020103 ; (973) National Basin Research Program of China(2013CB956400) ; National Natural Science Foundation of China(41290252 ; XDB03020400) ; 41172153 ; 41272184 ; 41321061)
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000371555100013
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7123
专题	中科院古脊椎所（2000年以后）古哺乳动物研究室
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100010, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, POB 9825, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Miao, Yunfa,Wu, Fuli,Chang, Hong,et al. A Late-Eocene palynological record from the Hoh Xil Basin, northern Tibetan Plateau, and its implications for stratigraphic age, paleoclimate and paleoelevation[J]. GONDWANA RESEARCH,2016,31:241-252.
APA	Miao, Yunfa.,Wu, Fuli.,Chang, Hong.,Fang, Xiaomin.,Deng, Tao.,...&Jin, Chunsheng.(2016).A Late-Eocene palynological record from the Hoh Xil Basin, northern Tibetan Plateau, and its implications for stratigraphic age, paleoclimate and paleoelevation.GONDWANA RESEARCH,31,241-252.
MLA	Miao, Yunfa,et al."A Late-Eocene palynological record from the Hoh Xil Basin, northern Tibetan Plateau, and its implications for stratigraphic age, paleoclimate and paleoelevation".GONDWANA RESEARCH 31(2016):241-252.

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