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Cenozoic moisture fluctuations on the northeastern Tibetan Plateau and association with global climatic conditions
Sun, Yuanyuan1,2; Liu, Jun3; Liang, Yu2; Ji, Junliang4; Liu, Weiguo5; Aitchison, Jonathan C.6; Sun, Jimin7; Lu, Jingfang8; Song, Bowen9; Xu, Yadong4; Zhang, Kexin4,9; Liu, Zhonghui2
通讯作者Liu, Zhonghui(zhliu@hku.hk)
2020-09-15
发表期刊JOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
卷号200页码:9
摘要The Cenozoic history of aridification in the Asian interior is thought to be intimately linked to uplift of the Tibetan Plateau and long-term global cooling. How fluctuating climatic conditions influenced regional moisture levels during the Cenozoic remains largely unknown. To infer moisture changes, we present oxygen isotope values of carbonates (delta O-18(carb)) and carbon isotope values of long-chain n-alkanes (delta C-13(alk)) from a continuous geological section in the Qaidam Basin, northwestern China. The section spans most of the Cenozoic Era, from similar to 52 to 5 million years ago (Ma), based on conventional chronology, whereas recently a drastically revised chronology has placed its basal age at similar to 26 Ma. The association of moisture changes with global climate largely depends on the chosen chronology. With the revised chronology, our records are inconsistent with existing moisture records from the Asian interior and do not show clear association with global climatic conditions. However, with the conventional chronology, our delta O-18(carb) record shows a long-term aridification trend over the Cenozoic, whereas the delta C-13(alk) suggests reduced moisture levels during the Oligocene. Both records consistently show enhanced aridity, notably during the Oligocene, similar to 20-17 Ma and after similar to 13 Ma, which largely corresponded to relatively cool global periods. Our records thus suggest that global climatic conditions during the Cenozoic exerted more influence on the moisture levels in the Asian interior than previously thought, if the conventional chronology is correct. Our study also highlights the importance of constructing a reliable chronology in order to make an association of Cenozoic terrestrial records with global climate.
关键词Cenozoic Qaidam Basin Moisture fluctuation Global climate change Carbonate oxygen isotope N-alkane carbon isotope
DOI10.1016/j.jseaes.2020.104490
关键词[WOS]WESTERN QAIDAM BASIN ; ISOTOPIC CONSTRAINTS ; MIDDLE MIOCENE ; CENTRAL-ASIA ; TARIM BASIN ; INTENSIFIED ARIDITY ; NE MARGIN ; UPLIFT ; ARIDIFICATION ; EVOLUTION
收录类别SCI ; SCI
语种英语
资助项目Chinese Academy of Sciences[XDB40010100] ; Chinese Academy of Sciences[XDA20070202] ; National Natural Science Foundation of China[41807333] ; National Natural Science Foundation of China[41420104008] ; National Natural Science Foundation of China[40921062] ; China Geological Survey[DD20190722] ; Hong Kong RGC[17305019] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0704] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0708]
WOS研究方向Geology
项目资助者Chinese Academy of Sciences ; National Natural Science Foundation of China ; China Geological Survey ; Hong Kong RGC ; Second Tibetan Plateau Scientific Expedition and Research Program
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000564254600002
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/15241
专题加速器质谱中心
通讯作者Liu, Zhonghui
作者单位1.China Geol Survey, Minist Nat Resources, Key Lab Sedimentary Basin & Oil & Gas Resources, Chengdu Ctr, Chengdu 610081, Peoples R China
2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China
3.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China
4.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
5.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710075, Peoples R China
6.Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia
7.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
8.China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China
9.China Univ Geosci, Inst Geol Survey, Wuhan 430074, Peoples R China
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Sun, Yuanyuan,Liu, Jun,Liang, Yu,et al. Cenozoic moisture fluctuations on the northeastern Tibetan Plateau and association with global climatic conditions[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,200:9.
APA Sun, Yuanyuan.,Liu, Jun.,Liang, Yu.,Ji, Junliang.,Liu, Weiguo.,...&Liu, Zhonghui.(2020).Cenozoic moisture fluctuations on the northeastern Tibetan Plateau and association with global climatic conditions.JOURNAL OF ASIAN EARTH SCIENCES,200,9.
MLA Sun, Yuanyuan,et al."Cenozoic moisture fluctuations on the northeastern Tibetan Plateau and association with global climatic conditions".JOURNAL OF ASIAN EARTH SCIENCES 200(2020):9.
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