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  4. 岩石圈演化国家重点实验室
Cenozoic tectonic and paleoenvironmental evolution of northwestern China: Evidence from two deep boreholes in the Jartai Basin

文献类型：期刊论文

作者Xu, Qinmian1; Yuan, Guibang1; Ding, Jianxun2; Zhang, Wei3; Xin, Houtian1; Deng, Chenglong4,5,6
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2019-04-15
卷号173页码:98-112
关键词The Jartai Basin Stratigraphic sequence Magnetostratigraphy Paleoenvironment
ISSN号1367-9120
DOI10.1016/j.jseaes.2019.01.006
英文摘要To study the Cenozoic tectonic and paleoenvironmental evolution of northwestern China, we drilled two deep boreholes, JLT1 and JLT2, in the Jartai Basin. Magnetostratigraphy, stratigraphy studies were conducted to establish a chronological framework. Sedimentary facies were reconstructed using lithology, geophysical logs (gamma ray (GR) and resistivity (R)) and measurements of grain size, sediment color (L*, a* and b*) and magnetic susceptibility and its frequency dependence. The stratigraphic sequence of borehole JLT2 is similar to that of Paleogene sediments in basins along the northeastern Tibetan Plateau, which may be the result of the far-field effect of the uplift of the Tibetan Plateau during the Paleocene, via faulting activity. The results of borehole JLT1 indicate that the basin was occupied by alternating desert, lacustrine and alluvial fan environments since ca. 6.7 Ma. During ca. 6.7-3.6 Ma, alternations of aeolian sand and lacustrine facies may reflect climatic cooling and drying, and at that time the area may have been an important sediment source for the aeolian Red Clay of the Loess Plateau. During ca. 3.6-2.1 Ma, alluvial fan development also reflected the uplift of the northeastern Tibetan Plateau, and the area acted as a source region for dust supplied to the Loess Plateau and the Shanxi Graben. The alternations of aeolian sand and lacustrine deposits since ca. 2.1 Ma may have resulted from glacial-interglacial variations of the East Asian Monsoon. Since ca. 1.7 Ma, lacustrine deposition developed, because of the enormous discharge of the Yellow River into the Jartai Basin. A tectonic movement at ca. 0.8 Ma is reflected by lacustrine red clay at the top of borehole JLT1. After the mid-Pleistocene transition, the modern landscape of the Jartai Basin and its adjacent regions were formed.
WOS关键词ULAN BUH DESERT ; NORTHEASTERN TIBETAN PLATEAU ; RESOLUTION MAGNETO STRATIGRAPHY ; NORTH CHINA ; QAIDAM BASIN ; LATE MIOCENE ; ASIAN ARIDIFICATION ; QINGHAI PROVINCE ; INNER-MONGOLIA ; CLIMATE-CHANGE
资助项目China Geological Survey Project[DD20160039] ; China Geological Survey Project[DD20160042] ; Natural Science Foundation of China[41690112] ; Natural Science Foundation of China[41574061]
WOS研究方向Geology
语种英语
WOS记录号WOS:000466059800010
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构China Geological Survey Project ; China Geological Survey Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; Natural Science Foundation of China ; Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/91482]  
专题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Xu, Qinmian
作者单位1.China Geol Survey, Tianjin Ctr, Tianjin 300170, Peoples R China
2.Inner Mongolia First Geol Mineral Explorat Inst, Hohhot 010020, Inner Mongolia, Peoples R China
3.Taishan Univ, Sch Tourism, Tai An 271000, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 10029, Peoples R China
5.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Qinmian,Yuan, Guibang,Ding, Jianxun,et al. Cenozoic tectonic and paleoenvironmental evolution of northwestern China: Evidence from two deep boreholes in the Jartai Basin[J]. JOURNAL OF ASIAN EARTH SCIENCES,2019,173:98-112.
APA Xu, Qinmian,Yuan, Guibang,Ding, Jianxun,Zhang, Wei,Xin, Houtian,&Deng, Chenglong.(2019).Cenozoic tectonic and paleoenvironmental evolution of northwestern China: Evidence from two deep boreholes in the Jartai Basin.JOURNAL OF ASIAN EARTH SCIENCES,173,98-112.
MLA Xu, Qinmian,et al."Cenozoic tectonic and paleoenvironmental evolution of northwestern China: Evidence from two deep boreholes in the Jartai Basin".JOURNAL OF ASIAN EARTH SCIENCES 173(2019):98-112.

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来源：地质与地球物理研究所

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