Magnetostratigraphy of the Kelasu section in the Baicheng depression, Southern Tian Shan, northwestern China

doi:10.1016/j.jseaes.2015.06.016

CORC > 地质与地球物理研究所 > 中国科学院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

	Magnetostratigraphy of the Kelasu section in the Baicheng depression, Southern Tian Shan, northwestern China
	Zhang, Zhiliang 1,2; Shen, Zhongyue 1; Sun, Jimin 2,3; Wang, Xin 1; Tian, Zhonghua 2; Pan, Xiaoqing 1; Shi, Linquan 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2015-11-01
卷号	111 页码:492-504
关键词	Magnetostratigraphy AMS Kelasu Baicheng Southern Tian Shan
DOI	10.1016/j.jseaes.2015.06.016
文献子类	Article
英文摘要	In order to better constrain chronology of the Cenozoic sediments in the foreland basin of the Southern Tian Shan, we carried out a magnetostratigraphic study along the Kelasu River, in the Baicheng depression, northwestern China. This is the basis for future studies of the tectonic shortening history and paleoclimatic changes. Stepwise thermal demagnetization was used to isolate the high-temperature characteristic component (ChRM) from 1521 oriented samples collected along two overlapped sections. The ChRM directions are interpreted to be acquired at or close to the time of rock formation. A composite magnetostratigraphic column composed of 86 (45 normal and 41 reversed) polarity chrons can correlate with GPTS (CK95) from similar to 54 Ma to similar to 7.6 Ma. The basal ages of the Kumugeliemu, Suweiyi, Jidike and the Kangcun formations are similar to 54 Ma, similar to 46 Ma, similar to 34 Ma and similar to 9.7 Ma, respectively. The changes of anisotropy of magnetic susceptibility (AMS) parameters (P-j and T) cannot be used to reflect the Cenozoic uplift of the southern Chinese Tian Shan due to the parameters have a significant linear positive correlation with the bulk magnetic susceptibility (K-m), suggesting a sedimentary provenance control. Based on the alignments of the AMS, we concluded that the paleo-river channel flowed from north to south, being similar to the present river flowing direction, suggesting that there was still a residue relief of the Tian Shan orogen after the long-term Mesozoic denudation or the reactivation of the Tian Shan may have been initiated as early as similar to 54 Ma. (c) 2015 Elsevier Ltd. All rights reserved.
WOS关键词	INCISED-VALLEY FILL ; DEEP-SEA SEDIMENT ; TIEN-SHAN ; MAGNETIC-SUSCEPTIBILITY ; CENOZOIC TECTONICS ; WESTERN CHINA ; CENTRAL-ASIA ; TARIM BASIN ; PALEOCURRENT DIRECTIONS ; KUCHE DEPRESSION
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000362603300035
资助机构	National Science and Technology Major Projects(2011ZX05009-001) ; National Science and Technology Major Projects(2011ZX05009-001) ; National Natural Science Foundation of China(41290251 ; National Natural Science Foundation of China(41290251 ; 41272203) ; 41272203) ; National Science and Technology Major Projects(2011ZX05009-001) ; National Science and Technology Major Projects(2011ZX05009-001) ; National Natural Science Foundation of China(41290251 ; National Natural Science Foundation of China(41290251 ; 41272203) ; 41272203)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62216]
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
作者单位	1.Zhejiang Univ, Dept Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhiliang,Shen, Zhongyue,Sun, Jimin,et al. Magnetostratigraphy of the Kelasu section in the Baicheng depression, Southern Tian Shan, northwestern China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,111:492-504.
APA	Zhang, Zhiliang.,Shen, Zhongyue.,Sun, Jimin.,Wang, Xin.,Tian, Zhonghua.,...&Shi, Linquan.(2015).Magnetostratigraphy of the Kelasu section in the Baicheng depression, Southern Tian Shan, northwestern China.JOURNAL OF ASIAN EARTH SCIENCES,111,492-504.
MLA	Zhang, Zhiliang,et al."Magnetostratigraphy of the Kelasu section in the Baicheng depression, Southern Tian Shan, northwestern China".JOURNAL OF ASIAN EARTH SCIENCES 111(2015):492-504.