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Cenozoic deformation and crustal shortening in the foreland of southern Tian Shan, NW China, as a response to the India-Asia collision
Lu, LX (Lu, Lixing)1,2; Sun, JM (Sun, Jimin)1,2,3; Zhang, ZL (Zhang, Zhiliang)1; Jia, YY (Jia, Yingying)1; Li, T (Li, Tao)4; Li, CH (Li, Chunhong)2,5; Tian, SC (Tian, Shengchen)1,2; Cao, MM (Cao, Mengmeng)(1,2
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
2019
Volume183Issue:0Pages:103960
DOI10.1016/j.jseaes.2019.103960
Abstract

Investigations of geometry and kinematics of foreland fold-and-thrust belts provide key information for understanding how convergence is accommodated in deformed forelands of orogenic belts. Here, we present the structural styles, deformation ages and shortening rates of three en echelon anticlines located at the west end of the Baicheng-Kuqa foreland fold-and-thrust belt. The results indicate that the three anticlines developed above the Eocene evaporites of the Kumugeliemu Group which constitute the decollement level in this typical thin-skinned tectonics. The initial growth of the East Awate and North Kalayuergun anticlines, as indicated by the syn-tectonic growth strata accumulations, occurred at similar to 5.3 Ma with shortening rates of similar to 0.70-0.77 mm/yr and similar to 0.40-0.43 mm/yr, respectively. Whereas, the initial folding time of the Middle Kalayuergun anticline is similar to 2.6-1.7 Ma, resulting in a shortening rate of similar to 0.35-0.65 mm/yr. The shortening rates are lower when compared with foreland deformation in the middle and eastern parts of the Baicheng-Kuqa fold-and-thrust belt. Such differences are mostly related to the strain partitioning caused by the NW-SE dextral strike-slip Kalayuergun fault as well as the influence of a dextral wrenching component in the west end of the Baicheng-Kuqa fold-and-thrust belt. Our study suggests that episodic tectonic deformation in the southern foreland of Tian Shan has been a response to the ongoing India-Asia convergence since the latest Miocene, and the spatial variability of crustal shortening rates has depended on regional tectonic differences.

Subject AreaGeosciences
WOS IDWOS:000487567500005
Language英语
Indexed BySCI
KeywordSyntectonic Growth Strata Western Kuqa Foreland Fold-thrust Belt Tarim Basin Tien-shan Baicheng Depression Tectonic Evolution Salt Structures Uplift Magnetostratigraphy
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
Cooperation Status国内
ISSN1367-9120
Department环境变化与地表过程重点实验室
URL查看原文
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9148
Collection图书馆
Corresponding AuthorLu, LX (Lu, Lixing); Sun, JM (Sun, Jimin)
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
4.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Provincal Key Lab Geodynam & Geohazards, Guangzhou, Guangdong, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Change & Land Surface Pr, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Lu, LX ,Sun, JM ,Zhang, ZL ,et al. Cenozoic deformation and crustal shortening in the foreland of southern Tian Shan, NW China, as a response to the India-Asia collision[J]. JOURNAL OF ASIAN EARTH SCIENCES,2019,183(0):103960.
APA Lu, LX .,Sun, JM .,Zhang, ZL .,Jia, YY .,Li, T .,...&Cao, MM .(2019).Cenozoic deformation and crustal shortening in the foreland of southern Tian Shan, NW China, as a response to the India-Asia collision.JOURNAL OF ASIAN EARTH SCIENCES,183(0),103960.
MLA Lu, LX ,et al."Cenozoic deformation and crustal shortening in the foreland of southern Tian Shan, NW China, as a response to the India-Asia collision".JOURNAL OF ASIAN EARTH SCIENCES 183.0(2019):103960.
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