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<publisher>HAL CCSD</publisher>
<title lang=en>Coupled phengite 40Ar–39Ar geochronology andthermobarometry: P-T-t evolution of AndrosIsland (Cyclades, Greece)</title>
<creator>Huet, Benjamin</creator>
<creator>Labrousse, Loic</creator>
<creator>Monié, Patrick</creator>
<creator>Malvoisin, Benjamin</creator>
<creator>Jolivet, Laurent</creator>
<contributor>Department of Geodynamics and Sedimentology ; Université de Vienne</contributor>
<contributor>Institut des Sciences de la Terre de Paris (iSTeP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - 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>Faculté de Géosciences et de l'Environnement ; Université de Lausanne</contributor>
<contributor>Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) ; Centre National de la Recherche Scientifique (CNRS) - Université d'Orléans (UO) - Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) - Institut national des sciences de l'Univers (INSU - CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 0016-7568</source>
<source>EISSN: 1469-5081</source>
<source>Geological Magazine</source>
<publisher>Cambridge University Press (CUP)</publisher>
<identifier>insu-01114909</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01114909</identifier>
<source>https://hal-insu.archives-ouvertes.fr/insu-01114909</source>
<source>Geological Magazine, Cambridge University Press (CUP), 2015, 152 (4), pp.711-727. 〈10.1017/S0016756814000661〉</source>
<identifier>DOI : 10.1017/S0016756814000661</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1017/S0016756814000661</relation>
<language>en</language>
<subject lang=en>blueschist</subject>
<subject lang=en>P-T-t path</subject>
<subject lang=en>HP-LT metamorphism</subject>
<subject lang=en>Aegean</subject>
<subject lang=en>detachments</subject>
<subject lang=en>subduction.</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Andros is a key island for understanding both the timing of high-pressure–low-temperature(HP-LT) metamorphism and the dynamics of crustal-scale detachment systems exhuming high-gradeunits in the Cyclades (Greece). Using phengite 40Ar–39Ar geochronology coupled with thermobarometry,as well as data from literature, we constrain the pressure–temperature–time (P-T-t) paths of theMakrotantalon and Attic–Cycladic Blueschist units on Andros. Peak conditions of the HP-LT episodein the Makrotantalon unit are 550 °C and 18.5 kbar, dated at 116 Ma. We correlate this episode withEarly Cretaceous blueschist facies metamorphism recognized in the Pelagonian zone of continentalGreece. This is a new argument favouring a Pelagonian origin for the Makrotantalon unit. In the Attic–Cycladic Blueschist unit, the P-T-t path is characterized by: (1) exhumation after peak conditions inHP-LT conditions between 55 and 35 Ma; (2) isobaric heating at 7 kbar until 30 Ma; and (3) isothermaldecompression until 21 Ma. This thermal evolution and timing are similar to those of the neighbouringTinos Island, emphasizing major thermal re-equilibration at the transition between stable and retreatingsubduction. Modifications of the crustal thermal state played a major role in the evolution of the NorthCycladic Detachment System, below which Andros HP-LT units were exhumed.</description>
<date>2015</date>
<contributor>ANR EGEO Project, ANR EGEO Project</contributor>
</dc>
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