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Variscan orogeny in Corsica: new structural and geochronological insights, and its place in the Variscan geodynamic framework

文献类型：期刊论文

作者Faure, Michel1; Rossi, Philippe2,3; Gache, Julien1; Melleton, Jeremie1,2; Frei, Dirk4; Li, Xianhua5; Lin, Wei5
刊名INTERNATIONAL JOURNAL OF EARTH SCIENCES
出版日期2014-09-01
卷号103期号:6页码:1533-1551
关键词Variscan orogeny Corsica Synmetamorphic deformation U-Th-Pb chemical dating Crustal melting Microcontinent collision Armorica Mid-German Crystalline Rise
ISSN号1437-3254
DOI10.1007/s00531-014-1031-8
文献子类Article
英文摘要In Western Corsica, remnants of pre-batholitic lithological and metamorphic assemblages are preserved as km-scale septa enclosed within Lower Carboniferous to Early Permian plutons. Two groups of septa were recognized: (1) the Argentella and Agriates-Tenda fragments correspond to Neoproterozoic rocks deformed and metamorphosed during the Cadomian-Panafrican orogeny, and (2) the Zicavo, Porto-Vecchio, Solenzara-Fautea, BelgodSre, Topiti, and Vignola fragments consist of Variscan metamorphic rocks. The lithological content and the main ductile deformation events for each septum are presented. In the Zicavo, Porto-Vecchio, and Topiti septa, a top-to-the-SW ductile shearing (D1 event) coeval with an amphibolite facies metamorphism is responsible for crustal thickening at ca 360 Ma. This main event was preceded by eclogite and granulite facies metamorphic events preserved as restites within migmatites dated at ca 345-330 Ma. A top-to-the-SE ductile shearing (D2 event) coeval with the crustal melting accommodated the exhumation of the D1 event. In contrast, the BelgodSre segment is peculiar as it exhibits a top-to-the-E vergence, although retrogressed high-pressure rocks are also recognized. The pre-Permian fragments are arranged in four NW-SE-striking stripes that define a SW-NE zoning with (1) a Western domain in Topiti, Vignola, Zicavo, Porto-Vecchio, and Solenzara-Fautea; (2) a Neoproterozoic basement with its unconformable Early Paleozoic sedimentary cover in Argentella; (3) an Eastern metamorphic domain in BelgodSre; (4) another Neoproterozoic basement with its Upper Paleozoic sedimentary cover in Agriates-Tenda. The Argentella basement is separated from the Western and Eastern domains by two sutures: S1 and S2. The Variscan Corsica represents the Eastern part of the Sardinia-Corsica-Maures segment. The comparison of this segment with other Variscan domains allows us to propose some possible correlations. We argue that the Western domain, Argentella, BelgodSre, and Agriates-Tenda domains can be compared with the Southern Variscan belt exposed in French Massif Central-Southern Massif Armoricain, Armorica microblock, L,on block, respectively.
WOS关键词EXTERNAL CRYSTALLINE MASSIFS ; ECLOGITE-FACIES RELICS ; TECTONIC EVOLUTION ; WESTERN CORSICA ; NE SARDINIA ; METAMORPHIC EVOLUTION ; ORDOVICIAN MAGMATISM ; PALEOZOIC EVOLUTION ; NORTHERN CORSICA ; SOUTHERN EUROPE
WOS研究方向Geology
语种英语
WOS记录号WOS:000340557400002
出版者SPRINGER
资助机构French national program Carte geologique de la France au 1/50 000 ; French national program Carte geologique de la France au 1/50 000 ; National Natural Science Foundation of China (NNSFC)(41273070) ; National Natural Science Foundation of China (NNSFC)(41273070) ; French national program Carte geologique de la France au 1/50 000 ; French national program Carte geologique de la France au 1/50 000 ; National Natural Science Foundation of China (NNSFC)(41273070) ; National Natural Science Foundation of China (NNSFC)(41273070) ; French national program Carte geologique de la France au 1/50 000 ; French national program Carte geologique de la France au 1/50 000 ; National Natural Science Foundation of China (NNSFC)(41273070) ; National Natural Science Foundation of China (NNSFC)(41273070) ; French national program Carte geologique de la France au 1/50 000 ; French national program Carte geologique de la France au 1/50 000 ; National Natural Science Foundation of China (NNSFC)(41273070) ; National Natural Science Foundation of China (NNSFC)(41273070)
源URL[http://ir.iggcas.ac.cn/handle/132A11/85100]  
专题中国科学院地质与地球物理研究所
通讯作者Faure, Michel
作者单位1.Univ Orleans, CNRS, UMR 7327, Inst Sci Terre Orleans, F-45067 Orleans 2, France
2.Bur Rech Geol & Minieres, F-45060 Orleans 2, France
3.U Mercatu, F-20218 Lama, Ponte Leccia, France
4.Univ Stellenbosch, Dept Earth Sci, ZA-7602 Matieland, South Africa
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Faure, Michel,Rossi, Philippe,Gache, Julien,et al. Variscan orogeny in Corsica: new structural and geochronological insights, and its place in the Variscan geodynamic framework[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2014,103(6):1533-1551.
APA Faure, Michel.,Rossi, Philippe.,Gache, Julien.,Melleton, Jeremie.,Frei, Dirk.,...&Lin, Wei.(2014).Variscan orogeny in Corsica: new structural and geochronological insights, and its place in the Variscan geodynamic framework.INTERNATIONAL JOURNAL OF EARTH SCIENCES,103(6),1533-1551.
MLA Faure, Michel,et al."Variscan orogeny in Corsica: new structural and geochronological insights, and its place in the Variscan geodynamic framework".INTERNATIONAL JOURNAL OF EARTH SCIENCES 103.6(2014):1533-1551.

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来源：地质与地球物理研究所

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