An early extensional event of the South China Block during the Late Mesozoic recorded by the emplacement of the Late Jurassic syntectonic Hengshan Composite Granitic Massif (Hunan, SE China)

doi:10.1016/j.tecto.2016.01.028

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 > 岩石圈演化国家重点实验室

	An early extensional event of the South China Block during the Late Mesozoic recorded by the emplacement of the Late Jurassic syntectonic Hengshan Composite Granitic Massif (Hunan, SE China)
	Wei, Wei 1,2,3,4; Chen, Yan 2,3; Faure, Michel 2,3; Martelet, Guillaume 2,3; Lin, Wei 4; Wang, Qingchen 4; Yan, Quanren 1; Hou, Quanlin 1
刊名	TECTONOPHYSICS
	2016-03-16
卷号	672 页码:50-67
关键词	South China Block Hengshan composite granitic massif Syntectonic pluton Anisotropy of Magnetic Susceptibility (AMS) Gravity modeling Mesozoic extensional tectonics
DOI	10.1016/j.tecto.2016.01.028
文献子类	Article
英文摘要	Continental scaled extension is the major Late Mesozoic (Jurassic and Cretaceous) tectonic event in East Asia, characterized by faulting, magmatic intrusions and half-grabens in an area with a length of >5000 km and a width of >1000 km. Numerous studies have been conducted on this topic in the South China Block (SCB), However, the space and time ranges of the compressional or extensional regimes of the SCB during the Jurassic are still unclear, partly due to the lack of structural data. The emplacement fabrics of granitic plutons can help determine the regional tectonic background. In this study, a multidisciplinary approach, including Anisotropy of Magnetic Susceptibility (AMS), macro and microstructural analyses, quartz c-axis preferred orientation, gravity modeling and monazite EPMA dating, was conducted on the Hengshan composite granitic massif in SO that consists of the Triassic Nanyue biotite granitic pluton and the Late Jurassic Baishifeng two-mica granitic pluton. The magnetic fabrics are characterized by a consistent NW-SE oriented lineation and weakly inclined foliation. A dominant high temperature deformation with a top-to-the-NW shear sense is identified for both plutons. The deformation increasing from the center of the Baishifeng pluton to its western border is associated to the development of the West Hengshan Boundary Fault (WHBF). The gravity modeling shows a "saw tooth-shaped" NE-SW oriented structure of the Baishifeng pluton, which may be considered as NE-SW oriented tension-gashes formed due to the NW-SE extension. All results show that the Triassic Nanyue pluton was deformed under post-solidus conditions by the WHBF coeval with the emplacement of the Late Jurassic Baishifeng pluton. All these observations comply with the NW-SE extensional tectonics coeval with the emplacement of the Baishifeng pluton, which argues that the NW-SE crustal stretching started since the Late Jurassic, at least in this part of the SO. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	TAN-LU FAULT ; QINGYANG-JIUHUA MASSIF ; GREAT XINGAN RANGE ; U-PB AGE ; EASTERN CHINA ; TECTONIC EVOLUTION ; MAGNETIC FABRICS ; VOLCANIC-ROCKS ; YANGTZE-RIVER ; INTRACONTINENTAL OROGEN
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000374608400005
资助机构	NSFC(41225009 ; NSFC(41225009 ; grant of Ministry of Land and Resources(201211024-04) ; grant of Ministry of Land and Resources(201211024-04) ; 41502215 ; 41502215 ; 41472193 ; 41472193 ; 2011ZX05008-001) ; 2011ZX05008-001) ; NSFC(41225009 ; NSFC(41225009 ; grant of Ministry of Land and Resources(201211024-04) ; grant of Ministry of Land and Resources(201211024-04) ; 41502215 ; 41502215 ; 41472193 ; 41472193 ; 2011ZX05008-001) ; 2011ZX05008-001)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53474]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China 2.Univ Orleans, ISTO, UMR 7327, F-45071 Orleans, France 3.CNRS, BRGM, INSU, ISTO,UMR 7327, F-45071 Orleans, France 4.Chinese Acad Sci, Inst Geol & Geophys, SKL, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wei, Wei,Chen, Yan,Faure, Michel,et al. An early extensional event of the South China Block during the Late Mesozoic recorded by the emplacement of the Late Jurassic syntectonic Hengshan Composite Granitic Massif (Hunan, SE China)[J]. TECTONOPHYSICS,2016,672:50-67.
APA	Wei, Wei.,Chen, Yan.,Faure, Michel.,Martelet, Guillaume.,Lin, Wei.,...&Hou, Quanlin.(2016).An early extensional event of the South China Block during the Late Mesozoic recorded by the emplacement of the Late Jurassic syntectonic Hengshan Composite Granitic Massif (Hunan, SE China).TECTONOPHYSICS,672,50-67.
MLA	Wei, Wei,et al."An early extensional event of the South China Block during the Late Mesozoic recorded by the emplacement of the Late Jurassic syntectonic Hengshan Composite Granitic Massif (Hunan, SE China)".TECTONOPHYSICS 672(2016):50-67.