气候变化领域集成服务门户(CCPortal): The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest

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DOI	10.1016/j.epsl.2020.116312
	The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest
	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.
发表日期	2020
ISSN	0012821X
卷号	543
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
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
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202975
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
推荐引用方式 GB/T 7714	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],2020,543.
APA	Xiong Z..,Ding L..,Spicer R.A..,Farnsworth A..,Wang X..,...&Yue Y..(2020).The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest.Earth and Planetary Science Letters,543.
MLA	Xiong Z.,et al."The early Eocene rise of the Gonjo Basin, SE Tibet: From low desert to high forest".Earth and Planetary Science Letters 543(2020).