globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116175
论文题名:
Qaidam Basin leaf fossils show northeastern Tibet was high, wet and cool in the early Oligocene
作者: Song B.; Spicer R.A.; Zhang K.; Ji J.; Farnsworth A.; Hughes A.C.; Yang Y.; Han F.; Xu Y.; Spicer T.; Shen T.; Lunt D.J.; Shi G.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 537
语种: 英语
中文关键词: general circulation climate model ; Oligocene ; paleoclimate ; paleoelevation ; physiognomy ; Qaidam
英文关键词: Floors ; Multivariant analysis ; General circulation ; Oligocene ; Paleoclimates ; Paleoelevation ; physiognomy ; Qaidam ; Climate models ; atmospheric general circulation model ; climate modeling ; fossil record ; leaf ; monsoon ; Oligocene ; paleoclimate ; China ; Qaidam Basin ; Qinghai ; Qinghai-Xizang Plateau
英文摘要: The Paleogene environment of today's semi-arid and arid Central Asia is poorly quantified and knowledge of the paleoelevation of northern Tibet remains elusive, yet both are crucially important for understanding inter-relationships between growth of the Tibetan Plateau and Asian monsoon development. Here, we apply the Climate-Leaf Analysis Multivariate Program (CLAMP) and moist enthalpy method to the newly discovered early Oligocene (30.8 Ma) fossil leaves from the Qaidam Basin, to reconstruct quantitatively the paleoclimate and paleoelevation of this critical part of northern Tibet. We find the Qaidam Basin floor vegetation was likely at ∼3.3 ± 1.4 km in the early Oligocene, similar to that of the present basin floor but higher than the rising Himalaya at that time, and experienced a temperate, moderately wet climate. Near-freezing (1.4 ± 3.5 °C) winters accompanied cool summers (∼23 ± 2.9 °C). Annual precipitation likely exceeded 1000 mm (growing season precipitation of 1229 ± 643 mm) with subdued (non-monsoonal) seasonality in which summers were drier than winters. This finding challenges geodynamic models that envisage a Miocene or later uplift of northern Tibet and progressive uplift from the south. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165275
Appears in Collections:气候变化与战略

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作者单位: Institute of Geological Survey, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, 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, MK7 6AA, United Kingdom; School of Geographical Sciences, University of Bristol, Bristol, BS8 1SS, United Kingdom; Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China; School of Earth Sciences, East China University of Technology, Nanchang, 330013, China; School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing, 210008, China

Recommended Citation:
Song B.,Spicer R.A.,Zhang K.,et al. Qaidam Basin leaf fossils show northeastern Tibet was high, wet and cool in the early Oligocene[J]. Earth and Planetary Science Letters,2020-01-01,537
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