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 | |
刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY |
2019-02-01 | |
卷号 | 515页码:143-151 |
关键词 | Plant Fossils Kailas Basin Kailas Formation U-pb Dating Paleoelevation Paleoenvironment |
ISSN号 | 0031-0182 |
DOI | 10.1016/j.palaeo.2018.04.017 |
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. |
资助项目 | Foundation 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关键词 | India-asia Collision ; Gangdese Batholith ; Lunpola Basin ; Late-eocene ; Thermal Evolution ; Miocene ; Paleoaltimetry ; Constraints ; Exhumation ; Deposits |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000457811700012 |
资助机构 | Foundation of the Geological Survey of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/16007] |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Shi, Gongle (史恭乐); Zhang, Kexin |
作者单位 | 1.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 |
推荐引用方式 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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