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Monazite U-Th-Pb EPMA and zircon U-Pb SIMS chronological constraints on the tectonic, metamorphic, and thermal events in the inner part of the Variscan orogen, example from the Sioule series, French Massif Central

文献类型：期刊论文

作者Do Couto, Damien1,2; Faure, Michel1; Augier, Romain1; Cocherie, Alain3; Rossi, Philippe3; Li, Xian-Hua4; Lin, Wei4
刊名INTERNATIONAL JOURNAL OF EARTH SCIENCES
出版日期2016-03-01
卷号105期号:2页码:557-579
关键词Variscan orogeny Monazite chemistry Monazite U-Th-Pb chemical dating Zircon SIMS geochronology Granulite facies Monazite chemistry French Massif Central
DOI10.1007/s00531-015-1184-0
文献子类Article
英文摘要In the northern Variscan French Massif Central, the Sioule metamorphic series exposes from top to bottom the tectonic superposition of the Upper Gneiss Unit (UGU), Lower Gneiss Unit (LGU), and Para-autochthonous Unit (PAU). The nappe stacking developed throughout two prograde syn-metamorphic events: D-1 is a top-to-the-SW shearing coeval with a probable Devonian migmatization and D-2 is a top-to-the-NW shearing event. Both events were completed before the unconformable deposition of the undeformed and unmetamorphosed "Tufs anthracifSres" formation, dated at ca 330 Ma (Late Visean). Furthermore, the UGU experienced a high-pressure metamorphism ascribed to a D-0 event during which eclogite or granulite crystallized in several parts of the UGU. Monazite U-Th-Pb and zircon U-Pb SIMS datings were carried out in order to constrain the ages of these D-0, D-1, and D-2 tectono-metamorphic events. These new geochronological results are placed in a P-T-t diagram constructed for the UGU, LGU, and PAU. Monazite sampled in UGU, LGU, and PAU rocks yields similar 365-350 Ma ages consistent with the D-2 event dated in other places of the French Massif Central. A zoned monazite grain from a granulitic paragneiss yields 416 +/- A 15 and 362 +/- A 14 Ma ages interpreted as those of the D-0 and D-2 events, respectively. Zircon from the same granulitic paragneiss yields SIMS ages at 343 +/- A 2 and 328 +/- A 2 Ma that are interpreted as recrystallization processes associated with post-thickening thermal events, possibly recording the onset of orogenic collapse of the Northern Massif Central. It is worth to note that neither monazite nor zircon recorded the D-1 event.
WOS关键词ELECTRON-MICROPROBE ; POLYCYCLIC EVOLUTION ; GRADE METAMORPHISM ; HERCYNIAN BELT ; TRACE-ELEMENT ; AGE ; COMPLEX ; GEOCHRONOLOGY ; METAPELITES ; XENOTIME
WOS研究方向Geology
语种英语
WOS记录号WOS:000370171400006
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)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62055]  
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 Orleans, CNRS, INSU, Inst Sci Terre Orleans, Campus Geosci,1A Rue Ferollerie, F-45071 Orleans 2, France
2.Dept Sci Terre, 13 Rue Maraichers, CH-1205 Geneva, Switzerland
3.Bur Rech Geol & Minieres, Av Claude Guillemin,BP 36009, F-45060 Orleans 2, France
4.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Do Couto, Damien,Faure, Michel,Augier, Romain,et al. Monazite U-Th-Pb EPMA and zircon U-Pb SIMS chronological constraints on the tectonic, metamorphic, and thermal events in the inner part of the Variscan orogen, example from the Sioule series, French Massif Central[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2016,105(2):557-579.
APA Do Couto, Damien.,Faure, Michel.,Augier, Romain.,Cocherie, Alain.,Rossi, Philippe.,...&Lin, Wei.(2016).Monazite U-Th-Pb EPMA and zircon U-Pb SIMS chronological constraints on the tectonic, metamorphic, and thermal events in the inner part of the Variscan orogen, example from the Sioule series, French Massif Central.INTERNATIONAL JOURNAL OF EARTH SCIENCES,105(2),557-579.
MLA Do Couto, Damien,et al."Monazite U-Th-Pb EPMA and zircon U-Pb SIMS chronological constraints on the tectonic, metamorphic, and thermal events in the inner part of the Variscan orogen, example from the Sioule series, French Massif Central".INTERNATIONAL JOURNAL OF EARTH SCIENCES 105.2(2016):557-579.

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来源：地质与地球物理研究所

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