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  4. 中国科学院新生代地质与环境重点实验室
A relatively warm and humid Oligocene climate in the northeastern Tibetan Plateau based on a high-resolution clay mineralogical and geochemical record

文献类型：期刊论文

作者Zhang, Chunxia2,4,5,6; Zhang, Ran3; Hu, Bin4,6; Zhang, Xiaoyan4,6,7; Li, Pei4,6,8; Tan, Ning6; Jia, Yunxia1; He, Zhilin4,6; Wu, Haibin4,6,7; Guo, Zhengtang4,6
刊名GLOBAL AND PLANETARY CHANGE
出版日期2023-08-01
卷号227页码:10
ISSN号0921-8181
关键词Oligocene Terrestrial record Silicate weathering Warm and humid conditions Xining Basin
DOI10.1016/j.gloplacha.2023.104178
英文摘要The Oligocene was the earliest cool period in the Cenozoic, and thus its terrestrial climatic evolution is of sig-nificant interest but remains poorly constrained for Inner Asia. In this study, we obtained a high-resolution paleoclimate record based on clay minerals and silicate chemical weathering proxies of the clay fraction (<2 & mu;m) in sedimentary rocks from the Xining Basin on the northeastern Tibetan Plateau. We compared these data with those for surrounding basins to reconstruct the Oligocene climatic evolution of the northeastern part of the plateau. Illite, chlorite, smectite (I/S; including irregular mixed-layer illite-smectite), and kaolinite are the four main clay minerals in the Oligocene strata. Multiple proxies indicated three characteristic climatic periods. During the late Eocene to early Oligocene, a weak silicate weathering intensity is indicative of an arid climate in the northeastern Tibetan Plateau. A stronger silicate weathering intensity and enrichment in smectite (I/S) and kaolinite indicate more warm and humid climate conditions during 32-25 Ma. During the Oligocene, before the high topography of the northern and northeastern parts of the Tibetan Plateau had developed, the relatively warm and humid climate conditions since 32 Ma were likely caused by enhanced transport of water vapor in response to relatively warm temperatures. The decrease in the degree of silicate weathering from 25 to 23 Ma was possibly caused by regional tectonism and global climatic changes. These relatively warm and humid conditions would explain the occurrence of large Oligocene mammals in the northeastern Tibetan Plateau.
WOS关键词XINING-BASIN ; ASIAN MONSOONS ; TECTONIC EVOLUTION ; MAMMALIAN FAUNAS ; LANZHOU BASIN ; LINXIA BASIN ; TARIM BASIN ; SEA RETREAT ; EOCENE ; ARIDIFICATION
资助项目National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[42072209] ; National Natural Science Foundation of China[41722206] ; National Natural Science Foundation of China[42071113] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000]
WOS研究方向Physical Geography ; Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:001032671500001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/111314]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Zhang, Chunxia
作者单位1.Shanxi Normal Univ, Sch Geog Sci, Linfen 030031, Shanxi, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, 19 Bei Tucheng Xilu, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Atmospher Phys, Climate Change Res Ctr, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Shandong, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
7.Univ Chinese Acad Sci, Beijing, Peoples R China
8.China Earthquake Disaster Prevent Ctr, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Chunxia,Zhang, Ran,Hu, Bin,et al. A relatively warm and humid Oligocene climate in the northeastern Tibetan Plateau based on a high-resolution clay mineralogical and geochemical record[J]. GLOBAL AND PLANETARY CHANGE,2023,227:10.
APA Zhang, Chunxia.,Zhang, Ran.,Hu, Bin.,Zhang, Xiaoyan.,Li, Pei.,...&Guo, Zhengtang.(2023).A relatively warm and humid Oligocene climate in the northeastern Tibetan Plateau based on a high-resolution clay mineralogical and geochemical record.GLOBAL AND PLANETARY CHANGE,227,10.
MLA Zhang, Chunxia,et al."A relatively warm and humid Oligocene climate in the northeastern Tibetan Plateau based on a high-resolution clay mineralogical and geochemical record".GLOBAL AND PLANETARY CHANGE 227(2023):10.

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来源：地质与地球物理研究所

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