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<datestamp>2018-01-11</datestamp>
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<title lang=en>Geochronological and geochemical characterization of magmatic-hydrothermal events within the Southern Variscan external domain (Ce'vennes area, France)</title>
<creator>Chauvet, Alain</creator>
<creator>Volland-Tuduri, Nathalie</creator>
<creator>Lerouge, Catherine</creator>
<creator>Bouchot, Vincent</creator>
<creator>Monié, Patrick</creator>
<creator>Charonnat, Xavier</creator>
<creator>Faure, Michel</creator>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut des Sciences de la Terre d'Orléans (ISTO) ; Institut national des sciences de l'Univers (INSU - CNRS) - Université d'Orléans (UO) - Université François Rabelais - Tours - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)</contributor>
<contributor>CNRS-GDR TRANSMET</contributor>
<description>International audience</description>
<source>ISSN: 1437-3254</source>
<source>EISSN: 1437-3262</source>
<source>International Journal of Earth Sciences</source>
<publisher>Springer Verlag</publisher>
<identifier>insu-00576546</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00576546</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00576546/document</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00576546/file/Chauvet-InternationalJournalEarthSciences-2012.pdf</identifier>
<source>https://hal-insu.archives-ouvertes.fr/insu-00576546</source>
<source>International Journal of Earth Sciences, Springer Verlag, 2012, 101 (1), pp.69-86. 〈10.1007/s00531-011-0639-1〉</source>
<identifier>DOI : 10.1007/s00531-011-0639-1</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s00531-011-0639-1</relation>
<language>en</language>
<subject lang=en>40Ar/39Ar dating</subject>
<subject lang=en>(H</subject>
<subject lang=en>O) isotope geochemistry</subject>
<subject lang=en>Granite</subject>
<subject lang=en>Hydrothermalism</subject>
<subject lang=en>Aplite and pegmatite dykes</subject>
<subject lang=en>Ce'vennes</subject>
<subject lang=en>Variscan</subject>
<subject lang=en>French Massif central</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Geochronological, mineralogical, and geochemical analyses have been focussed on the Mont-Loze're- Borne plutonic complex and surrounding rocks (Ce'vennes, French Massif Central) in which B-W-Sn and As-Au-Sb mineralization is encountered. Two main results are highlighted: (1) the existence of a 301-306 Ma magmatohydrothermal event unrelated to the emplacement of the Pont-de-Montvert-Borne plutonic body at 316 Ma; (2) the magmatic and hydrothermal features are strongly associated, both in time and in space, thus demonstrating an intimate connection between mineralizing processes and magmatism in this part of the French Massif Central. We also show that mineralization and associated hydrothermal occurrences do not correspond to a simple and single geochemical signature and that a contamination model must be invoked in order to account for the complexity of isotopic results. This study demonstrates that the application of the O and H isotopic signatures as tracers of the source and nature of fluids in an orogenic context requires some specific care. Finally, a model of the tectonic-magmatic- hydrothermal evolution of the study area is suggested in which we discuss two alternative scenarios. The first one implies the existence of two different hydrothermal/ mineralizing events (Bo-W-Sn and As-Au-Sb ones). The second one suggests the same source for all hydrothermal and mineralized structures.</description>
<date>2012</date>
</dc>
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