Uplift, climate and biotic changes at the Eocene-Oligocene transition in south-eastern Tibet

被引：196

作者：

Su, Tao ^{[1
,3
,4
]}

Spicer, Robert A. ^{[1
,5
]}

Li, Shi-Hu ^{[6
]}

Xu, He ^{[7
]}

Huang, Jian ^{[1
]}

Sherlock, Sarah ^{[5
]}

Huang, Yong-Jiang ^{[2
]}

Li, Shu-Feng ^{[1
]}

Wang, Li ^{[1
]}

Jia, Lin-Bo ^{[2
]}

Deng, Wei-Yu-Dong ^{[1
,3
]}

Liu, Jia ^{[1
]}

Deng, Cheng-Long ^{[8
]}

Zhang, Shi-Tao ^{[9
]}

Valdes, Paul J. ^{[10
,11
]}

Zhou, Zhe-Kun ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China

[2] Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650204, Yunnan, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Stratig, Nanjing 210008, Peoples R China

[5] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes MK7 6AA, Bucks, England

[6] Sun Yat Sen Univ, Guangdong Prov Key Lab Geodynam & Geohazards, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China

[7] Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China

[8] Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China

[9] Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Yunnan, Peoples R China

[10] Univ Bristol, Sch Geog Sci, Bristol BS8 1TH, Avon, England

[11] Univ Bristol, Cabot Inst, Bristol BS8 1TH, Avon, England

来源：

NATIONAL SCIENCE REVIEW | 2019年 / 6卷 / 03期

基金：

英国自然环境研究理事会; 中国国家自然科学基金;

关键词：

biodiversity; Eocene; Oligocene; plant fossil; Qinghai-Tibetan Plateau; uplift; RIVER SHEAR ZONE; VOLCANIC-ROCKS; ASIAN MONSOON; SE MARGIN; PLATEAU; PALEOALTIMETRY; DEFORMATION; CHINA; BASIN; BIODIVERSITY;

D O I：

10.1093/nsr/nwy062

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

070301 [无机化学]; 070403 [天体物理学]; 070507 [自然资源与国土空间规划学]; 090105 [作物生产系统与生态工程];

摘要：

The uplift history of south-eastern Tibet is crucial to understanding processes driving the tectonic evolution of the Tibetan Plateau and surrounding areas. Underpinning existing palaeoaltimetric studies has been regional mapping based in large part on biostratigraphy that assumes a Neogene modernization of the highly diverse, but threatened, Asian biota. Here, with new radiometric dating and newly collected plant-fossil archives, we quantify the surface height of part of the south-eastern margin of Tibet in the latest Eocene (similar to 34 Ma) to be similar to 3 km and rising, possibly attaining its present elevation (3.9 km) in the early Oligocene. We also find that the Eocene-Oligocene transition in south-eastern Tibet witnessed leaf-size diminution and a floral composition change from sub-tropical/warm temperate to cool temperate, likely reflective of both uplift and secular climate change, and that, by the latest Eocene, floral modernization on Tibet had already taken place, implying modernization was deeply rooted in the Palaeogene.

引用

页码：495 / 504

页数：10

共 63 条

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Geometry, kinematics, and regional significance of the Chong Shan shear zone, Eastern Himalayan Syntaxis, Yunnan, China [J].