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A high-resolution Late Neogene geochemical record of the southeastern margin of the Tibetan Plateau: Constraints on Dali fault system activity and uplift of the Diancang Shan massif

文献类型：期刊论文

作者Zhang, Chunxia1,2,6; Li, Shihu4,5; Zhang, Xiaoyan2,3; Li, Pei2,3; Deng, Chenglong3,5; Guo, Zhengtang1,2,3
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2020-06-15
卷号195页码:12
关键词Late Neogene Geochemical record Dali fault system Diancang Shan massif Tibetan Plateau
ISSN号1367-9120
DOI10.1016/j.jseaes.2020.104335
英文摘要The Dali Basin, located northeast of the Diancang Shan massif, is tectonically controlled by the Dali fault system located along the southeastern margin of the Tibetan Plateau. The sediments in the Dali Basin, thus, record the activity of the Dali fault system and uplift of the Diancang Shan massif during the late Neogene period. In this study, we present the chemical compositions and bulk mineralogical characteristics of fine-grained sediment samples collected from the Dasongping section in the Dali Basin, spanning an interval from 7.6 to 1.8 Ma. Mineral assemblages and geochemical data indicate that the sediment provenance in Dali Basin was a distally-sourced weathered material from similar to 7.6 to 4.2 Ma and changed to a locally-sourced bedrock after similar to 4.2 Ma. This suggests that the Dali Basin was an open lake from 7.6 to 4.2 Ma and changed to a closed lake at 4.2 Ma. The main reason for this change was intensified normal fault activity in the Dali fault system at similar to 4.2 Ma that resulted in the isolation of the Dali Basin and the infilling of local bedrock around the Diancang Shan massif within the Dali basin. Late Pliocene global cooling, marked by the expansion of northern hemisphere glaciation, further intensified the uplift of the Diancang Shan massif at similar to 3.6 Ma, which exposed Paleogene conglomerates east of the Dali Basin. Since similar to 2.7 Ma, the Dali fault system has been dominated by normal extensional processes. The enhanced reactivation resulted in the rapid uplift of the Diancang Shan massif and the rapid infill of the Dali basin by coarse-grained sediments.
WOS关键词RED RIVER ; LATE MIOCENE ; SHEAR ZONE ; TECTONIC UPLIFT ; FORELAND BASIN ; YUNNAN ; EVOLUTION ; CHINA ; EROSION ; CLIMATE
资助项目National Nature Science Foundation of China[41722206] ; National Nature Science Foundation of China[41888101] ; "Strategic Priority Research Program" of the Chinese Academy of Sciences[XDB26000000] ; "Strategic Priority Research Program" of the Chinese Academy of Sciences[XDA13010106] ; National Key Research and Development Program of China[YS2016YFJC050103]
WOS研究方向Geology
语种英语
WOS记录号WOS:000536141200007
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature 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 Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature 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 Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature 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 Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature 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 Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/96699]  
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
地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Zhang, Chunxia
作者单位1.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
6.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Chunxia,Li, Shihu,Zhang, Xiaoyan,et al. A high-resolution Late Neogene geochemical record of the southeastern margin of the Tibetan Plateau: Constraints on Dali fault system activity and uplift of the Diancang Shan massif[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,195:12.
APA Zhang, Chunxia,Li, Shihu,Zhang, Xiaoyan,Li, Pei,Deng, Chenglong,&Guo, Zhengtang.(2020).A high-resolution Late Neogene geochemical record of the southeastern margin of the Tibetan Plateau: Constraints on Dali fault system activity and uplift of the Diancang Shan massif.JOURNAL OF ASIAN EARTH SCIENCES,195,12.
MLA Zhang, Chunxia,et al."A high-resolution Late Neogene geochemical record of the southeastern margin of the Tibetan Plateau: Constraints on Dali fault system activity and uplift of the Diancang Shan massif".JOURNAL OF ASIAN EARTH SCIENCES 195(2020):12.

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来源：地质与地球物理研究所

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