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

Author:

Su Tao123,Spicer Robert A14,Li Shi-Hu5,Xu He6,Huang Jian1,Sherlock Sarah4,Huang Yong-Jiang7,Li Shu-Feng1,Wang Li1,Jia Lin-Bo7,Deng Wei-Yu-Dong12,Liu Jia1,Deng Cheng-Long8,Zhang Shi-Tao9,Valdes Paul J10,Zhou Zhe-Kun17

Affiliation:

1. Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China

2. University of Chinese Academy of Sciences, Beijing 100049, China

3. State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China

4. School of Environment, Earth and Ecosystem Sciences, The Open University, MK7 6AA, UK

5. Guangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, China

6. Institute of Geology and Paleontology, Linyi University, Linyi 276000, China

7. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China

8. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China

9. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

10. School of Geographical Sciences and Cabot Institute, University of Bristol, Bristol, BS8 1TH, UK

Abstract

Abstract 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 (∼34 Ma) to be ∼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.

Funder

National Natural Science Foundation of China

CAS

Natural Environment Research Council

Youth Innovation Promotion Association of the Chinese Academy of Sciences

Publisher

Oxford University Press (OUP)

Subject

Multidisciplinary

Reference61 articles.

1. Dominant control of the South Asian monsoon by orographic insulation versus plateau heating;Boos;Nature,2010

2. Orographic controls on climate and paleoclimate of Asia: thermal and mechanical roles for the Tibetan Plateau;Molnar;Annu Rev Earth Planet Sci,2010

3. The Cimmeride orogenic system and the tectonics of Eurasia;Şengör;Spec Pap Geol Soc Am,1984

4. Geologic evolution of the Himalayan-Tibetan Orogen;Yin;Annu Rev Earth Planet Sci,2000

5. Outward-growth of the Tibetan Plateau during the Cenozoic: a review;Wang;Tectonophysics,2014

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