气候变化领域集成服务门户(CCPortal): The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane

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DOI	10.1016/j.palaeo.2018.04.017
	The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane
	Ai K.; Shi G.; Zhang K.; Ji J.; Song B.; Shen T.; Guo S.
发表日期	2019
ISSN	0031-0182
起始页码	143
结束页码	151
卷号	515
英文摘要	The Lhasa terrane is thought to be a key region for understanding the elevation history of the southern Tibetan Plateau after collision of continental India and Asia in early Paleocene. Stable isotopic studies consistently suggest that the Lhasa terrane had reached its near-present elevation before the Miocene. In this paper we report a plant megafossil assemblage from the Kailas Formation of the Kailas Basin in western part of the southern Lhasa terrane. Our U-Pb dating and magnetostratigraphic correlation show that the studied section of the Kailas Formation ranges from 25.1 Ma to 21.8 Ma in age, and that the fossil flora occurred at 23.3 Ma (latest Oligocene). The uppermost Oligocene Kailas fossil flora is low in diversity and dominated by Populus, Betulaceae and legume. It most likely represents a deciduous, broad-leaf vegetation and suggests a temperate, humid environment with a low to moderate palaeoelevation of 1500–2900 m in the Kailas Basin during the latest Oligocene, based on the co-existing range of the living analogues of the fossil plants. This conflicts with the existence of a continuous, high Gangdese Mountains stretching across the whole southern Lhasa terrane in the late Oligocene. Available evidence appears to suggest strong uplift of the southern Lhasa terrane after the latest Oligocene. © 2018 Elsevier B.V.
英文关键词	Kailas Basin; Kailas Formation; Paleoelevation; Paleoenvironment; Plant fossils; U-Pb dating
语种	英语
scopus关键词	continental collision; deciduous tree; dominance; elevation; fossil assemblage; legume; magnetostratigraphy; Miocene; Oligocene; paleobotany; Paleocene; paleoenvironment; species diversity; stable isotope; uplift; uranium-lead dating; China; Gangdise Mountains; Lhasa Terrane; Xizang; Betulaceae; Populus
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151115
作者单位	School of Earth Science, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; Institute of Geological Survey, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing, 210008, China
推荐引用方式 GB/T 7714	Ai K.,Shi G.,Zhang K.,et al. The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane[J],2019,515.
APA	Ai K..,Shi G..,Zhang K..,Ji J..,Song B..,...&Guo S..(2019).The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane.Palaeogeography, Palaeoclimatology, Palaeoecology,515.
MLA	Ai K.,et al."The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane".Palaeogeography, Palaeoclimatology, Palaeoecology 515(2019).