干旱区生态环境知识资源中心(Arid): Cenozoic tectonic and paleoenvironmental evolution of northwestern China: Evidence from two deep boreholes in the Jartai Basin

Arid

DOI	10.1016/j.jseaes.2019.01.006
	Cenozoic tectonic and paleoenvironmental evolution of northwestern China: Evidence from two deep boreholes in the Jartai Basin
	Xu, Qinmian 1; Yuan, Guibang 1; Ding, Jianxun 2; Zhang, Wei 3; Xin, Houtian 1; Deng, Chenglong 4,5,6
通讯作者	Xu, Qinmian
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
EISSN	1878-5786
出版年	2019
卷号	173 页码:98-112
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.
英文关键词	The Jartai Basin Stratigraphic sequence Magnetostratigraphy Paleoenvironment
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000466059800010
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
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216803
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]. 中国科学院地质与地球物理研究所,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.