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Constant elevation of southern Tibet over the past 15 million years
Spicer, RA; Harris, NBW; Widdowson, M; Herman, AB; Guo, SX (郭双兴); Valdes, PJ; Wolfe, JA; Kelley, SP
Source PublicationNATURE

The uplift of the Tibetan plateau, an area that is 2,000 km wide, to an altitude of about 5,000 m has been shown to modify global climate(1-3) and to influence monsoon intensity(4-8). Mechanical and thermal models for homogeneous thickening of the lithosphere make specific predictions about uplift rates of the Tibetan plateau(9,10), but the precise history of the uplift of the plateau has yet to be confirmed by observations. Here we present well-preserved fossil leaf assemblages from the Namling basin, southern Tibet, dated to similar to15 Myr ago, which allow us to reconstruct the temperatures within the basin at that time. Using a numerical general circulation model to estimate moist static energy at the location of the fossil leaves, we reconstruct the elevation of the Namling basin 15 Myr ago to be 4,689 +/- 895 m or 4,638 +/- 847 m, depending on the reference data used. This is comparable to the present-day altitude of 4,600 m. We conclude that the elevation of the southern Tibetan plateau probably has remained unchanged for the past 15 Myr.

WOS KeywordEast-west Extension ; Asian Monsoon ; Late Miocene ; Myr Ago ; Plateau ; Uplift ; Paleoaltitudes ; Lithosphere ; Collision ; Volcanism
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000180803200039
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Document Type期刊论文
Corresponding AuthorSpicer, RA
Affiliation1.Open Univ, Dept Earth Sci, Milton Keynes MK7 6AA, Bucks, England
2.Russian Acad Sci, Inst Geol, Moscow 119017, Russia
3.Acad Sinica, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
4.Univ Reading, Dept Meteorol, Reading RG6 6BB, Berks, England
5.Univ Arizona, Dept Geosci, Desert Lab, Tucson, AZ 85721 USA
Recommended Citation
GB/T 7714
Spicer, RA,Harris, NBW,Widdowson, M,et al. Constant elevation of southern Tibet over the past 15 million years[J]. NATURE,2003,421(6923):622-624.
APA Spicer, RA.,Harris, NBW.,Widdowson, M.,Herman, AB.,Guo, SX .,...&Kelley, SP.(2003).Constant elevation of southern Tibet over the past 15 million years.NATURE,421(6923),622-624.
MLA Spicer, RA,et al."Constant elevation of southern Tibet over the past 15 million years".NATURE 421.6923(2003):622-624.
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