Characteristics and dynamic origin of the large-scale Jiaoluotage ductile compressional zone in the eastern Tianshan Mountains, China

doi:10.1016/S0191-8141(03)00017-8

	Characteristics and dynamic origin of the large-scale Jiaoluotage ductile compressional zone in the eastern Tianshan Mountains, China
	Xu, XW ; Ma, TL ; Sun, LQ ; Cai, XP
刊名	JOURNAL OF STRUCTURAL GEOLOGY
	2003
卷号	25 期号:11 页码:1901-1915
关键词	symmetric fabrics radial lineation 'cream-cake' strain style eastern Tianshan Mountains
ISSN号	0191-8141
DOI	10.1016/S0191-8141(03)00017-8
文献子类	Article
英文摘要	The Jiaoluotage ductile compressional zone (JDCZ) in the eastern Tianshan Mountains, China, developed in volcanic and sedimentary rocks that were deposited in a Carboniferous back-arc basin situated between the Jungar plate and middle Tianshan terrane. The ductile compressional zone, similar to 500 km long and 20-50 km wide, consists of a number of east-trending vertical foliation zones that display an augen geometry in plan view and a fan-like geometry in transverse profiles. Ductile compressional deformation has produced pervasive foliation, radial stretching lineations, contemporaneous folds, and various macroscopic to microscopic symmetric structures within the JDCZ. Rotations of most clasts and porphyroclasts are bidirectional. The preferred orientation patterns of the optical axes of calcite and quartz display axial or orthorhombic symmetry. Three kinds of strain patterns have been determined in the JDCZ: apparent flattening, plane strain and apparent constriction. The overall strain character of the JDCZ is 'cream-cake' style. The volcanic and sedimentary rocks within the JDCZ were metamorphosed into greenschist facies with temperature of 400-600 degreesC and pressure of 300-400 MPa. Development of the JDCZ is interpreted as due to N-S coaxial compression caused by the collision between the Tarim plate and the middle Tianshan arc-Jiaoluotage basin-Jungar plate system during the Permian between 270 and 290 Ma. (C) 2003 Elsevier Ltd. All rights reserved.
WOS关键词	PROGRESSIVE DEFORMATION ; FABRIC DEVELOPMENT ; SHEAR ZONE ; FOLD AXES ; STRAIN
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000185524100010
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/78815]
专题	中国科学院地质与地球物理研究所
通讯作者	Xu, XW
作者单位	1.CAS, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.CAGS, Inst Geomech, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Xu, XW,Ma, TL,Sun, LQ,et al. Characteristics and dynamic origin of the large-scale Jiaoluotage ductile compressional zone in the eastern Tianshan Mountains, China[J]. JOURNAL OF STRUCTURAL GEOLOGY,2003,25(11):1901-1915.
APA	Xu, XW,Ma, TL,Sun, LQ,&Cai, XP.(2003).Characteristics and dynamic origin of the large-scale Jiaoluotage ductile compressional zone in the eastern Tianshan Mountains, China.JOURNAL OF STRUCTURAL GEOLOGY,25(11),1901-1915.
MLA	Xu, XW,et al."Characteristics and dynamic origin of the large-scale Jiaoluotage ductile compressional zone in the eastern Tianshan Mountains, China".JOURNAL OF STRUCTURAL GEOLOGY 25.11(2003):1901-1915.