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A Late Miocene Terrestrial Temperature History for the Northeastern Tibetan Plateau's Period of Tectonic Expansion
Chen, CH (Chen, Chihao)1,3; Bai, Y (Bai, Yan)1,2; Fang, XM (Fang, Xiaomin)1,2,3; Guo, HC (Guo, Haichao)1; Meng, QQ (Meng, Qingquan)4,5; Zhang, WL (Zhang, Weilin)1,2; Zhou, PC (Zhou, Pengchao)1; Murodov, A (Murodov, Azamdzhon)1,3
Source PublicationGEOPHYSICAL RESEARCH LETTERS
2019
Volume46Issue:14Pages:8375-8386
DOI10.1029/2019GL082805
Abstract

During the Late Miocene, the climate patterns and ecosystems of continental land masses experienced crucial transitions, but whether the principal driver was regional tectonic forcing or a decline in CO2 concentrations remains debated. Here we present a terrestrial paleotemperature record spanning similar to 12.7-5.2 Ma based on tetraether lipids extracted from the northeastern Tibetan Plateau. Our results reveal a sharp cooling (similar to 8 degrees C) during similar to 10.5-8 Ma, asynchronous with minor fluctuations in global sea temperatures, suggesting a rapid tectonic uplift of similar to 1 km in extent. This event appears consistent with the simultaneous aridification and transitions of ecosystems experienced in adjacent regions. Moreover, the amplitude of the cooling over land is less than that which occurred over the ocean during the CO2-dominated Late Miocene cooling event (similar to 7-5.4 Ma). We therefore concluded that tectonic forcing, rather than a decline in CO2 levels, most likely dominated continental climate patterns and ecosystem transitions during the Late Miocene.

Subject AreaGeosciences
WOS IDWOS:000481818900056
Language英语
Indexed BySCI
KeywordDialkyl Glycerol Tetraethers Carbon-dioxide Concentrations Xining Basin Branched Tetraethers Surface Sediments Stable-isotopes Yenisei River Qaidam Basin Lake Qinghai Range Growth
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国内
ISSN0094-8276
Department大陆碰撞与高原隆升重点实验室
URL查看原文
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9225
Collection图书馆
Corresponding AuthorBai, Y (Bai, Yan)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, CAS Key Lab Continental Collis & Plateau Uplift, Beijing, Peoples R China;
2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
3.Univ Chinese Acad Sci, Beijing, Peoples R China;
4.Lanzhou Univ, Sch Earth Sci, Lanzhou, Gansu, Peoples R China;
5.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou, Gansu, Peoples R China.
Recommended Citation
GB/T 7714
Chen, CH ,Bai, Y ,Fang, XM ,et al. A Late Miocene Terrestrial Temperature History for the Northeastern Tibetan Plateau's Period of Tectonic Expansion[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(14):8375-8386.
APA Chen, CH .,Bai, Y .,Fang, XM .,Guo, HC .,Meng, QQ .,...&Murodov, A .(2019).A Late Miocene Terrestrial Temperature History for the Northeastern Tibetan Plateau's Period of Tectonic Expansion.GEOPHYSICAL RESEARCH LETTERS,46(14),8375-8386.
MLA Chen, CH ,et al."A Late Miocene Terrestrial Temperature History for the Northeastern Tibetan Plateau's Period of Tectonic Expansion".GEOPHYSICAL RESEARCH LETTERS 46.14(2019):8375-8386.
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