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

查看全文 作　　者：Tao [1,3,4]Su;Robert A. [1,5]Spicer;Shi-Hu [6]Li;He [7]Xu;Jian [1]Huang;Sarah [5]Sherlock;Yong-Jiang [2]Huang;Shu-Feng [1]Li;Li [1]Wang;Lin-Bo [2]Jia;Wei-Yu-Dong [1,3]Deng;Jia [1]Liu;Cheng-Long [8]Deng;Shi-Tao [9]Zhang;Paul J. [10]Valdes;Zhe-Kun [1]Zhou

机构地区：[1]Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla 666303,China;[10]School of Geographical Sciences and Cabot Institute,University of Bristol,Bristol,BS81TH,UK;[2]Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650204,China;[3]University of Chinese Academy of Sciences,Beijing 100049,China;[4]State Key Laboratory of Paleobiology and Stratigraphy,Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing 210008,China;[5]School of Environment,Earth and Ecosystem Sciences,The Open University,MK7 6AA,UK;[6]Guangdong Provincial Key Laboratory of Geodynamics and Geohazards,School of Earth Sciences and Engineering,Sun Yat-sen University,Guangzhou 510275,China;[7]Institute of Geology and Paleontology,Linyi University,Linyi 276000,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

出　　处：《National Science Review》索引2019年第6卷第3期,共10页

基　　金：supported by National Natural Science Foundation of China(31470325 and 41661134049 to T.S.,U1502231and 31590823 to Z.K.Z.);the Strategic Priority Research Program of CAS(XDA20070301 to Z.K.Z.);XTBG International Fellowship for Visiting Scientists to R.A.S.,the grant of Natural Environment Research Council(NE/P013805/1 to P.J.V.);Key Research Program of Frontier Sciences,CAS(QYZDB-SSWSMC016 to T.S.);Youth Innovation Promotion Association,CAS(2017439 to T.S.);the CAS 135 program(2017XTBGF01 to T.S.) 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(~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. 关键词：BIODIVERSITY EOCENE OLIGOCENE plant FOSSIL Qinghai-Tibetan PLATEAU UPLIFT

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

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