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<publisher>HAL CCSD</publisher>
<title lang=en>Inherited Ocean-Continent Transition zones in deeply subducted terranes: Insights from Alpine Corsica</title>
<creator>Vitale Brovarone, A.</creator>
<creator>Beltrando, Marco</creator>
<creator>Malavieille, Jacques</creator>
<creator>Giuntoli, Francesco</creator>
<creator>Tondella, Ermete</creator>
<creator>Groppo, Chiara</creator>
<creator>Beyssac, Olivier</creator>
<creator>Compagnoni, Roberto</creator>
<contributor>Università degli Studi di Torino, Dip. di Scienze Mineralogiche e Petrologiche, Via Valperga Caluso, 35, 10125 Torino, Italy ; università degli studi di Torno</contributor>
<contributor>Dept. of Mineralogical and Petrological Sciences, University of Torino ; Université du Québec</contributor>
<contributor>Dynamique de la Lithosphere ; 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) - 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 de minéralogie et de physique des milieux condensés (IMPMC) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 0024-4937</source>
<source>Lithos</source>
<publisher>Elsevier</publisher>
<identifier>hal-00617744</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00617744</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00617744</source>
<source>Lithos, Elsevier, 2011, 124 (3-4), pp.273-290. 〈10.1016/j.lithos.2011.02.013〉</source>
<identifier>DOI : 10.1016/j.lithos.2011.02.013</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2011.02.013</relation>
<language>en</language>
<subject lang=en>Ocean-Continent Transition</subject>
<subject lang=en>Tethyan rifting</subject>
<subject lang=en>Structural inheritance</subject>
<subject lang=en>Lawsonite eclogite</subject>
<subject lang=en>Alpine Corsica</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>In the Schistes Lustres of Alpine Corsica (France) serpentinized mantle rocks are associated with continental basement and meta-volcanic/-seclimentary cover rocks. The relationships among these different lithologies are especially well exposed in the Monte San Petrone unit, where Alpine metamorphism reached lawsonite-eclogite conditions. The contact between serpentinites and slivers of continental basement, relatively flat-lying over several kilometers, is characterized by evidence of cataclastic deformation pre-dating Alpine High-Pressure ductile fabrics. The serpentinite/continental basement pair is stratigraphically overlain by metasediments with a typical Jurassic-Cretaceous supra-ophiolitic lithostratigraphy, with metaradiolarites passing upward to marbles and cal cschists. Noticeably, no evidence of cataclastic deformation is found in metasediments. These observations indicate that the lithostratigraphy of the Monte San Petrone unit was established during a pre-Alpine polyphase evolution, which culminated in extensive brittle deformation along a flat-lying detachment fault prior to the deposition of Jurassic sediments. We suggest that the inferred Mesozoic extensional tectonics were related to the opening of the Westem Tethys. The Mesozoic architecture of the Monte San Petrone area, which is typical of an Ocean-Continent Transition (OCT) zone, was preserved despite Alpine deformation and metamorphism, when the different lithologies (i.e. meta-ophiolites, continent-derived rocks and metasediments) underwent a common metamorphic evolution, culminating at T=490-550 degrees C and P= 2.2-2.6 GPa. Similar tectonostratigraphic associations are observed in other high-pressure terranes of Alpine Corsica, suggesting that inherited OCT-type domains may be common in Alpine-type orogens.</description>
<date>2011</date>
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