Polycyclic Palaeozoic evolution of accretionary orogenic wedge in the southern Chinese Altai: Evidence from structural relationships and U-Pb geochronology

doi:10.1016/j.lithos.2018.06.005

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

	Polycyclic Palaeozoic evolution of accretionary orogenic wedge in the southern Chinese Altai: Evidence from structural relationships and U-Pb geochronology
	Broussolle, Arnaud 1; Aguilar, Carmen 2; Sun, Min 1; Schulmann, Karel 2,3; Stipska, Pavla 2,3; Jiang, Yingde 4; Yu, Yang 1,4; Xiao, Wenjiao 5; Wang, Sheng 4; Mikova, Jitka 6
刊名	LITHOS
	2018-08-01
卷号	314 页码:400-424
关键词	Chinese Altai Devonian and Permian metamorphism Structural synthesis U-Pb zircon dating Permian exhumation
ISSN号	0024-4937
DOI	10.1016/j.lithos.2018.06.005
英文摘要	Structural analysis and U-Pb geochronological study on zircons from the southern Chinese Altai (the Kalasu area, SE of the Altai city) show that the Cambro-Ordovician accretionary wedge (ca. 520-492 Ma) underwent four major geological events: 1) emplacement of Early Devonian magmas (ca. 410-400) associated with formation of a volcano-sedimentary cover, 2) major Middle Devonian (ca. 390-374 Ma) tectono-metamorphic event, 3) Late Devonian-Early Carboniferous folding without apparent metamorphism, and 4) a regional folding with localized Early Permian high- to ultrahigh-temperature reworking (ca. 300-280 Ma). The Early Devonian magmatism is characterized by emplacement of mafic rocks and granitoids in the centre of the NE-SW profile, coevally with granitoid magmatism and rhyolite volcanism in the southwest and northeast, respectively. The whole volcano-sedimentary and magmatic edifice was transposed by sub-horizontal metamorphic fabric associated with variable metamorphic degrees in different areas ranging from greenschist facies in the northeast (mu + bi +/- g) to amphibolite facies in the southwest (st + g +/- sill) and granulite facies in the centre (g + sill+kfs). This metamorphic architecture, distribution of magmatism and character of metamorphic zircon populations allow to correlate these areas with upper, middle and lower orogenic crust that developed during important vertical shortening and horizontal flow in Middle Devonian. Subsequently, the whole edifice was affected by regional NE-SW trending upright (possibly Late Devonian-Early Carboniferous) folding. Finally, Early Permian shortening produced NW-SE trending regional upright folds in the southwest and northeast and a crustal-scale vertical, tabular deformation zone in the centre. The Permian deformation is accompanied by granulite facies (kfs + cd + sill+g) metamorphism and anatexis reworking the Devonian lower orogenic crust, with extensive resetting and growth of new zircons and with intrusions of Permian granites and gabbros. This study suggests that the Early Permian event was related to massive perturbation of thermal structure of the mantle lithosphere due to the collision of the Junggar arc with the Chinese Altai terrane. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2017YFC0601205] ; NSF China[41672056] ; NSF China[41230207] ; International Partnership Program of the Chinese Academy of Sciences[132744KYSB20160005] ; Hong Kong RGC Research Projects[17303415] ; Hong Kong RGC Research Projects[17302317] ; HKU[201411159173] ; HKU[201511159199] ; Czech Science Foundation (GACR grant)[17-17540S]
WOS关键词	TARIM MANTLE PLUME ; NW CHINA ; TECTONIC EVOLUTION ; CONTINENTAL-CRUST ; NORTHWESTERN CHINA ; CENTRAL-ASIA ; NORTH XINJIANG ; SW MONGOLIA ; GEOLOGICAL IMPLICATIONS ; ISOTOPIC EVIDENCE
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000441854400026
资助机构	National Key Research and Development Program of China ; NSF China ; International Partnership Program of the Chinese Academy of Sciences ; Hong Kong RGC Research Projects ; HKU ; Czech Science Foundation (GACR grant) ; National Key Research and Development Program of China ; NSF China ; International Partnership Program of the Chinese Academy of Sciences ; Hong Kong RGC Research Projects ; HKU ; Czech Science Foundation (GACR grant) ; National Key Research and Development Program of China ; NSF China ; International Partnership Program of the Chinese Academy of Sciences ; Hong Kong RGC Research Projects ; HKU ; Czech Science Foundation (GACR grant) ; National Key Research and Development Program of China ; NSF China ; International Partnership Program of the Chinese Academy of Sciences ; Hong Kong RGC Research Projects ; HKU ; Czech Science Foundation (GACR grant)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88550]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Sun, Min
作者单位	1.Univ Hong Kong, Dept Earth Sci, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China 2.Czech Geol Survey, Ctr Lithospher Res, Klarov 3, Prague 11821 1, Czech Republic 3.Univ Strasbourg, Ecole & Observ Sci Terre, Inst Phys Globe Strasbourg, CNRS UMR7516, F-67084 Strasbourg, France 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 6.Czech Geol Survey, Geol 6, Prague 15200 5, Czech Republic
推荐引用方式 GB/T 7714	Broussolle, Arnaud,Aguilar, Carmen,Sun, Min,et al. Polycyclic Palaeozoic evolution of accretionary orogenic wedge in the southern Chinese Altai: Evidence from structural relationships and U-Pb geochronology[J]. LITHOS,2018,314:400-424.
APA	Broussolle, Arnaud.,Aguilar, Carmen.,Sun, Min.,Schulmann, Karel.,Stipska, Pavla.,...&Mikova, Jitka.(2018).Polycyclic Palaeozoic evolution of accretionary orogenic wedge in the southern Chinese Altai: Evidence from structural relationships and U-Pb geochronology.LITHOS,314,400-424.
MLA	Broussolle, Arnaud,et al."Polycyclic Palaeozoic evolution of accretionary orogenic wedge in the southern Chinese Altai: Evidence from structural relationships and U-Pb geochronology".LITHOS 314(2018):400-424.