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<title lang=en>Alpine tectonics in the Calabrian-Peloritan belt (southern Italy): New Ar-40/Ar-39 data in the Aspromonte Massif area</title>
<creator>Heymes, Thomas</creator>
<creator>Monie, Patrick</creator>
<creator>Arnaud, Nicolas</creator>
<creator>Pecher, Arnaud</creator>
<creator>Bouillin, Jean-Pierre</creator>
<creator>Compagnoni, Roberto</creator>
<contributor>Laboratoire de Géodynamique des Chaines Alpines (LGCA) ; Observatoire des Sciences de l'Univers de Grenoble (OSUG) ; Université Joseph Fourier - Grenoble 1 (UJF) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS) - Université Joseph Fourier - Grenoble 1 (UJF) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS) - Institut des Sciences de la Terre (ISTerre) ; Université Joseph Fourier - Grenoble 1 (UJF) - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR) - Institut national des sciences de l'Univers (INSU - CNRS) - Institut de recherche pour le développement [IRD] : UR219 - PRES Université de Grenoble - Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) - Centre National de la Recherche Scientifique (CNRS) - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR) - Institut de recherche pour le développement [IRD] : UR219 - PRES Université de Grenoble - Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<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>DSMP, Università degli Studi di Torino ; Université du Québec</contributor>
<description>International audience</description>
<source>ISSN: 0024-4937</source>
<source>Lithos</source>
<publisher>Elsevier</publisher>
<identifier>hal-00475649</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00475649</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00475649</source>
<source>Lithos, Elsevier, 2010, 114 (3-4), pp.451-472. 〈10.1016/j.lithos.2009.10.011〉</source>
<identifier>DOI : 10.1016/j.lithos.2009.10.011</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2009.10.011</relation>
<language>en</language>
<subject lang=en>Western Mediterranean</subject>
<subject lang=en>Calabrian-Peloritan belt</subject>
<subject lang=en>Alpine convergence/extension</subject>
<subject lang=en>Exhumation</subject>
<subject lang=en>Ar-40/Ar-39 dating</subject>
<subject lang=en>Mylonitic shear zones</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>This study provides new Ar-40/Ar-39 geochronological constraints on the age of the Alpine tectonics in the Aspromonte Massif (southern part of the Calabrian-Peloritan belt). This massif exposes the upper units of the Calabride Complex which originated from the European continental margin. The Calabride Complex was incorporated in the Alpine orogenic wedge and then integrated into the Apennines and Maghrebides fold- and-thrust belts. Throughout the Calabride Complex there is evidence for a two stage tectonic history, which remains however rather poorly dated: Alpine nappe stacking is followed by extensional reworking along the former thrust contacts or along new detachment surfaces. Our new ages suggest that exhumation of the uppermost units, which accompanied nappe stacking, probably started at 45 Ma and that the deepest units were almost completely exhumed at 33 Ma. This kinematics probably corresponds to syn-orogenic extension while the end of exhumation is clearly related to the extensional tectonics dated at 28.6 Ma along detachment structures.;Our geochronological data reveal a very short lag time between accretional and extensional processes in this part of the Mediterranean Alpine orogenic belt. The direction of extension, when the units are restored to their initial position (i.e. before the opening of the Western Mediterranean basins and the bending of the arc) is NNE-SSW. Such a direction does not fit with the eastward slab-retreat model generally put forward to explain extension in the Western Mediterranean. In contrast, we provide evidence for roughly N-S middle Oligocene extension in the accretionary prism, not previously described in this part of the Mediterranean domain.</description>
<date>2010</date>
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