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DOI	10.1016/j.jseaes.2019.103960
	Cenozoic deformation and crustal shortening in the foreland of southern Tian Shan, NW China, as a response to the India-Asia collision
	Lu, Lixing; Sun, Jimin; Zhang, Zhiliang; Jia, Yingying; Li, Tao; Li, Chunhong; Tian, Shengchen; Cao, Mengmeng
通讯作者	Lu, LX ; Sun, JM (通讯作者)
发表日期	2019
ISSN	1367-9120
EISSN	1878-5786
卷号	183
英文摘要	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.
关键词	SYNTECTONIC GROWTH STRATA WESTERN KUQA FORELAND FOLD-THRUST BELT TARIM BASIN TIEN-SHAN BAICHENG DEPRESSION TECTONIC EVOLUTION SALT STRUCTURES UPLIFT MAGNETOSTRATIGRAPHY
英文关键词	Foreland deformation; Shortening rate; Growth strata; Decollement fold; Tian Shan
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000487567500005
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259499
推荐引用方式 GB/T 7714	Lu, Lixing,Sun, Jimin,Zhang, Zhiliang,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]. 中国科学院青藏高原研究所,2019,183.
APA	Lu, Lixing.,Sun, Jimin.,Zhang, Zhiliang.,Jia, Yingying.,Li, Tao.,...&Cao, Mengmeng.(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.
MLA	Lu, Lixing,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(2019).