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The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane
Ai, Keke1,2,3; Shi, Gongle (史恭乐)4,5; Zhang, Kexin1,2,3; Ji, Junliang1,2; Song, Bowen3; Shen, Tianyi1; Guo, Shuangxing (郭双兴)4,5
2019-02-01
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume515Pages:143-151
Abstract

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.

KeywordPlant Fossils Kailas Basin Kailas Formation U-pb Dating Paleoelevation Paleoenvironment
DOI10.1016/j.palaeo.2018.04.017
Language英语
WOS KeywordIndia-asia Collision ; Gangdese Batholith ; Lunpola Basin ; Late-eocene ; Thermal Evolution ; Miocene ; Paleoaltimetry ; Constraints ; Exhumation ; Deposits
Funding ProjectFoundation of the Geological Survey of China[121201004000150013] ; National Natural Science Foundation of China[41702118] ; National Natural Science Foundation of China[41702363] ; National Natural Science Foundation of China[41772014] ; National Natural Science Foundation of China[41772107] ; Youth Innovation Promotion Association, CAS[2017359]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000457811700012
Funding OrganizationFoundation of the Geological Survey of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16008
Collection中国科学院南京地质古生物研究所
Corresponding AuthorShi, Gongle (史恭乐); Zhang, Kexin
Affiliation1.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Hubei, Peoples R China
2.China Univ Geosci, Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China
3.China Univ Geosci, Inst Geol Survey, Wuhan 430074, Hubei, Peoples R China
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Ai, Keke,Shi, Gongle ,Zhang, Kexin,et al. The uppermost Oligocene Kailas flora from southern Tibetan Plateau and its implications for the uplift history of the southern Lhasa terrane[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,515:143-151.
APA Ai, Keke.,Shi, Gongle .,Zhang, Kexin.,Ji, Junliang.,Song, Bowen.,...&Guo, Shuangxing .(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,515,143-151.
MLA Ai, Keke,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):143-151.
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