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

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 moderniz...

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Autores principales: Su, Tao, Spicer, Robert A, Li, Shi-Hu, Xu, He, Huang, Jian, Sherlock, Sarah, Huang, Yong-Jiang, Li, Shu-Feng, Wang, Li, Jia, Lin-Bo, Deng, Wei-Yu-Dong, Liu, Jia, Deng, Cheng-Long, Zhang, Shi-Tao, Valdes, Paul J, Zhou, Zhe-Kun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8291530/
https://www.ncbi.nlm.nih.gov/pubmed/34691898
http://dx.doi.org/10.1093/nsr/nwy062
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author Su, Tao
Spicer, Robert A
Li, Shi-Hu
Xu, He
Huang, Jian
Sherlock, Sarah
Huang, Yong-Jiang
Li, Shu-Feng
Wang, Li
Jia, Lin-Bo
Deng, Wei-Yu-Dong
Liu, Jia
Deng, Cheng-Long
Zhang, Shi-Tao
Valdes, Paul J
Zhou, Zhe-Kun
author_facet Su, Tao
Spicer, Robert A
Li, Shi-Hu
Xu, He
Huang, Jian
Sherlock, Sarah
Huang, Yong-Jiang
Li, Shu-Feng
Wang, Li
Jia, Lin-Bo
Deng, Wei-Yu-Dong
Liu, Jia
Deng, Cheng-Long
Zhang, Shi-Tao
Valdes, Paul J
Zhou, Zhe-Kun
author_sort Su, Tao
collection PubMed
description 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.
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spelling pubmed-82915302021-10-21 Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet Su, Tao Spicer, Robert A Li, Shi-Hu Xu, He Huang, Jian Sherlock, Sarah Huang, Yong-Jiang Li, Shu-Feng Wang, Li Jia, Lin-Bo Deng, Wei-Yu-Dong Liu, Jia Deng, Cheng-Long Zhang, Shi-Tao Valdes, Paul J Zhou, Zhe-Kun Natl Sci Rev Research Article 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. Oxford University Press 2019-05 2018-06-12 /pmc/articles/PMC8291530/ /pubmed/34691898 http://dx.doi.org/10.1093/nsr/nwy062 Text en © The Author(s) 2018. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Research Article
Su, Tao
Spicer, Robert A
Li, Shi-Hu
Xu, He
Huang, Jian
Sherlock, Sarah
Huang, Yong-Jiang
Li, Shu-Feng
Wang, Li
Jia, Lin-Bo
Deng, Wei-Yu-Dong
Liu, Jia
Deng, Cheng-Long
Zhang, Shi-Tao
Valdes, Paul J
Zhou, Zhe-Kun
Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet
title Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet
title_full Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet
title_fullStr Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet
title_full_unstemmed Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet
title_short Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet
title_sort uplift, climate and biotic changes at the eocene–oligocene transition in south-eastern tibet
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8291530/
https://www.ncbi.nlm.nih.gov/pubmed/34691898
http://dx.doi.org/10.1093/nsr/nwy062
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