globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116312
论文题名:
The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest
作者: Xiong Z.; Ding L.; Spicer R.A.; Farnsworth A.; Wang X.; Valdes P.J.; Su T.; Zhang Q.; Zhang L.; Cai F.; Wang H.; Li Z.; Song P.; Guo X.; Yue Y.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 543
语种: 英语
中文关键词: clumped isotope ; Eocene ; intracontinental subduction ; paleoelevation ; SE Tibetan Plateau
英文关键词: Carbonation ; Fertilizers ; Forestry ; Geodynamics ; Isotopes ; Thermometers ; Clumped isotopes ; Crustal deformations ; Mean annual air temperatures ; Oxygen isotopes ; Paleoaltimetry ; Qiangtang terrane ; Regional climate changes ; Tibetan Plateau ; Climate change ; climate variation ; desert ; Eocene ; forest ; isotopic analysis ; oxygen isotope ; paleoclimate ; paleosol ; thermometry ; China ; Gonjo Basin ; Xizang
英文摘要: Views differ on the uplift history of the SE Tibetan Plateau and causal geodynamic mechanisms, yet reliable age-constrained paleoaltimetry in this region could test growth models of the entire plateau. Here we apply carbonate clumped isotope thermometry to well-dated carbonate paleosols and marls in the Gonjo Basin, SE Tibet, to reveal the topographic evolution of the basin. The sedimentary ages of carbonates of the lower and upper Ranmugou Formation are constrained to 54-50 Ma and 44-40 Ma, respectively. The temperature derived from carbonate clumped isotope thermometry indicates the mean annual air temperature (MAAT) of the Gonjo Basin in the early Eocene was ∼24 °C, which is consistent with the warm climate indicated by palm fossils. The MAAT of the basin in the middle Eocene was ∼7 °C, 17 °C cooler than in the early Eocene. Carbonate clumped oxygen isotope thermometry-based paleoaltimetry shows the Gonjo Basin experienced a rapid uplift of 3.1 km, from ∼0.7 km in the early Eocene to ∼3.8 km in the middle Eocene. This rise explains the marked cooling. As a cause of this rapid rise, and the associated regional climate change transforming the landscape from desert to forest, we invoke crustal deformation and thickening induced by intracontinental subduction between the Lhasa and Qiangtang terranes that comprise the core of the Tibet. © 2020
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被引频次[WOS]:88   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165353
Appears in Collections:气候变化与战略

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作者单位: Key laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, 666303, China; School of Environment, Earth and Ecosystem Sciences, The Open University, Milton Keynes, MK76AA, United Kingdom; School of Geographical Sciences, University of Bristol, University Road, Clifton, Bristol, BS8 1SS, United Kingdom; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100101, China

Recommended Citation:
Xiong Z.,Ding L.,Spicer R.A.,et al. The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest[J]. Earth and Planetary Science Letters,2020-01-01,543
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