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<OAI-PMH schemaLocation=http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd> <responseDate>2018-01-15T15:42:40Z</responseDate> <request identifier=oai:HAL:insu-00353657v1 verb=GetRecord metadataPrefix=oai_dc>http://api.archives-ouvertes.fr/oai/hal/</request> <GetRecord> <record> <header> <identifier>oai:HAL:insu-00353657v1</identifier> <datestamp>2018-01-11</datestamp> <setSpec>type:ART</setSpec> <setSpec>collection:INSU</setSpec> <setSpec>collection:CNRS</setSpec> <setSpec>collection:UNIV-GRENOBLE1</setSpec> <setSpec>collection:UNIV-SAVOIE</setSpec> <setSpec>collection:GM</setSpec> <setSpec>collection:OSUG</setSpec> <setSpec>collection:UGA</setSpec> <setSpec>collection:AGROPOLIS</setSpec> <setSpec>collection:IFSTTAR</setSpec> <setSpec>collection:ISTERRE</setSpec> <setSpec>collection:UNIV-AMU</setSpec> <setSpec>collection:B3ESTE</setSpec> <setSpec>collection:UNIV-AG</setSpec> <setSpec>collection:UNIV-MONTPELLIER</setSpec> </header> <metadata><dc> <publisher>HAL CCSD</publisher> <title lang=en>The Mamonia Complex (SW Cyprus) revisited: remnant of Late Triassic intra-oceanic volcanism along the Tethyan southwestern passive margin</title> <creator>Lapierre, Henriette</creator> <creator>Bosch, D.</creator> <creator>Narros, A.</creator> <creator>Mascle, G. H.</creator> <creator>Tardy, Marc</creator> <creator>Demant, A.</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>Institut des Sciences de la Terre, de l'Environnement et de l'Espace de Montpellier (ISTEEM), Université Montpellier-2 ; Université Montpellier 2 - Sciences et Techniques (UM2) - ISTEEM - UMR 5573</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>Laboratoire de Pétrologie magmatique ; Université Paul Cézanne - Aix-Marseille 3</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-00353657</identifier> <identifier>https://hal-insu.archives-ouvertes.fr/insu-00353657</identifier> <source>https://hal-insu.archives-ouvertes.fr/insu-00353657</source> <source>Geological Magazine, Cambridge University Press (CUP), 2007, 144 (1), pp.1 à 19. 〈10.1017/S0016756806002937〉</source> <identifier>DOI : 10.1017/S0016756806002937</identifier> <relation>info:eu-repo/semantics/altIdentifier/doi/10.1017/S0016756806002937</relation> <language>en</language> <subject lang=en>Late Triassic volcanism</subject> <subject lang=en>SW Cyprus</subject> <subject lang=en>Pb–Nd</subject> <subject lang=en>oceanic island basalts</subject> <subject lang=en>Neotethys opening</subject> <type>info:eu-repo/semantics/article</type> <type>Journal articles</type> <description lang=en>Upper Triassic volcanic and sedimentary rocks of the Mamonia Complex in southwestern Cyprus are exposed in erosional windows through the post-Cretaceous cover, where the Mamonia Complex is tectonically imbricated with the Troodos and Akamas ophiolitic suites. Most of these Upper Triassic volcanic rocks have been considered to represent remnants of Triassic oceanic crust and its associated seamounts. New Nd and Pb isotopic data show that the whole Mamonia volcanic suite exhibits features of oceanic island basalts (OIB). Four rock types have been distinguished on the basis of the petrology and chemistry of the rocks. Volcanism began with the eruption of depleted olivine tholeiites (Type 1) and oceanic island tholeiites (Type 2) associated with deep basin siliceous and/or calcareous sediments. The tholeiites were followed by highly phyric alkali basalts (Type 3) interbedded with pelagic Halobia-bearing limestones or white reefal limestones. Strongly LREE-enriched trachytes (Type 4) were emplaced during the final stage of volcanic activity. Nd and Pb isotopic ratios suggest that tholeiites and mildly alkali basalts derived from partial melting of heterogeneous enriched mantle sources. Fractional crystallization alone cannot account for the derivation of trachytes from alkaline basalts. The trachytes could have been derived from the partial melting at depth of mafic material which shares with the alkali basalts similar trace element and isotopic compositions. This is corroborated by the rather similar isotopic compositions of the alkali basalts and trachytes. The correlations observed between incompatible elements (Nb, Th) and {varepsilon}Nd and Pb isotopic initial ratios suggest that the Mamonia suite was derived from the mixing of a depleted mantle (DMM) and an enriched component of High µ (µ = 238U/204Pb, HIMU) type. Models using both Nd and Pb isotopic initial ratios suggest that the depleted tholeiites (Type 1) derived from a DMM source contaminated by an Enriched Mantle Type 2 component (EM2), and that the oceanic tholeiites (Type 2), alkali basalts (Type 3) and trachytes (Type 4) were derived from the mixing of the enriched mantle source of the depleted tholeiites with a HIMU component. None of the Mamonia volcanic rocks show evidence of crustal contamination. The Upper Triassic within-plate volcanism likely erupted in a small southerly Neotethyan basin, located north of the Eratosthenes seamount and likely floored by oceanic crust.</description> <date>2007</date> </dc> </metadata> </record> </GetRecord> </OAI-PMH>