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<datestamp>2018-01-11</datestamp>
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<title lang=en>The Meso-Cenozoic thermo-tectonic evolution of the Eastern Pyrenees: an Ar-40/Ar-39 fission track and (U-Th)/He thermochronological study of the Canigou and Mont-Louis massifs</title>
<creator>Maurel, O.</creator>
<creator>Monie, Patrick</creator>
<creator>Pik, R.</creator>
<creator>Arnaud, Nicolas</creator>
<creator>Brunel, Maurice</creator>
<creator>Jolivet, Marc</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>Centre de Recherches Pétrographiques et Géochimiques (CRPG) ; Université de Lorraine (UL) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<source>ISSN: 1437-3254</source>
<source>EISSN: 1437-3262</source>
<source>International Journal of Earth Sciences</source>
<publisher>Springer Verlag</publisher>
<identifier>hal-00411442</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00411442</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00411442</source>
<source>International Journal of Earth Sciences, Springer Verlag, 2008, 97 (3), pp.565-584. 〈10.1007/s00531-007-0179-x〉</source>
<identifier>DOI : 10.1007/s00531-007-0179-x</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s00531-007-0179-x</relation>
<language>en</language>
<subject lang=en>multi-method thermochronology</subject>
<subject lang=en>Pyrenees</subject>
<subject lang=en>exhumation</subject>
<subject lang=en>T(e)over-capt fault</subject>
<subject lang=en>Canigou massif</subject>
<subject lang=en>Mont-Louis granite</subject>
<subject lang=en>apatite</subject>
<subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<subject>[SDU.STU.PE] Sciences of the Universe [physics]/Earth Sciences/Petrography</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Vertical displacements on the SW-NE T (e) over capt fault (Eastern Pyrenees Axial Zone, France), which separates the Variscan Canigou-Caranca and Mont-Louis massifs, were constrained using a thermochronologic multi-method approach. Ar-40/Ar-39 data from the granitic Mont-Louis massif record its Variscan cooling history and reveal no ages younger than Early Cretaceous, while the Canigou-Caranca gneiss massif records systematically younger Ar-40/Ar-39 ages. These younger Ar-40/Ar-39 ages in the Canigou-Caranca gneiss massif are the result of partial to total rejuvenation of argon isotopic systems related to a thermal flow coeval with the Cretaceous HT-BP metamorphism in the North Pyrenean Zone. Only the deepest rocks from the Canigou-Caranca suffered this extensive Mid-Cretaceous thermal overprint probably due to differential burial around 4 km at that time. The post Mid-Cretaceous vertical displacements along the T (e) over capt fault are recorded by "low" temperature thermochronology using K-feldspar Ar-40/Ar-39, zircon and apatite fission track and (U-Th)/He datings. The Mont-Louis granite samples experienced a long period of protracted cooling reflecting a lack of thermo-tectonic activity in this area from Late Palaeozoic to Early Cenozoic, followed by cooling from 55-60 Ma to Late Eocene at a mean rate of 15-20 degrees C/Ma in the final stage. This cooling stage corresponds to T (e) over capt fault reactivation with a reversed component, promoting exhumation of the Mont-Louis roof zone contemporaneously with the south-vergent Pyrenean thrusting. In the Canigou-Caranca massif, the main cooling event occurred from 32 to 18 Ma at a maximum rate of 30 degrees C/Ma during Early Oligocene followed by a more moderate rate of 3 degrees C/Ma from Late Oligocene to Early Burdigalian, coeval with the normal reactivation of the T (e) over capt fault in brittle conditions that accommodated the final exhumation of the massif during the opening of the Gulf of Lion.</description>
<date>2008</date>
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