The Open UniversitySkip to content
 

No high Tibetan Plateau until the Neogene

Su, T.; Farnsworth, A.; Spicer, R. A.; Huang, J.; Wu, F-X.; Liu, J.; Li, S-F.; Xing, Y-W.; Huang, Y-J.; Deng, W-Y-D.; Tang, H.; Xu, C-L.; Zhao, F.; Srivastava, G.; Valdes, P. J.; Deng, T. and Zhou, Z-K. (2019). No high Tibetan Plateau until the Neogene. Science Advances, 5(3), article no. eaav2189.

Full text available as:
[img]
Preview
PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1126/sciadv.aav2189
Google Scholar: Look up in Google Scholar

Abstract

The Late Paleogene surface height and paleoenvironment for the core area of the Qinghai-Tibetan Plateau (QTP) remain critically unresolved. Here, we report the discovery of the youngest well-preserved fossil palm leaves from Tibet. They were recovered from the Late Paleogene (Chattian), ca. 25.5 ± 0.5 million years, paleolake sediments within the Lunpola Basin (32.033°N, 89.767°E), central QTP at a present elevation of 4655 m. The anatomy of palms renders them intrinsically susceptible to freezing, imposing upper bounds on their latitudinal and altitudinal distribution. Combined with model-determined paleoterrestrial lapse rates, this shows that a high plateau cannot have existed in the core of Tibet in the Paleogene. Instead, a deep paleovalley, whose floor was <2.3 km above mean sea level bounded by (>4 km) high mountain systems, formed a topographically highly varied landscape. This finding challenges prevailing views on tectonic processes, monsoon dynamics, and the evolution of Asian biodiversity.

Item Type: Journal Item
Copyright Holders: 2019 The Authors
ISSN: 2375-2548
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 60103
SWORD Depositor: Jisc Publications-Router
Depositing User: Jisc Publications-Router
Date Deposited: 26 Mar 2019 09:50
Last Modified: 08 May 2019 19:10
URI: http://oro.open.ac.uk/id/eprint/60103
Share this page:

Metrics

Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU