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dc.contributor.authorPuga, Encarnación
dc.contributor.authorDíaz de Federico, Antonio
dc.contributor.authorFanning, C. M.
dc.contributor.authorNieto Liñán, José Miguel 
dc.contributor.authorRodríguez Martínez Conde, José Ángel
dc.contributor.authorDíaz Puga, Miguel Ángel
dc.contributor.authorLozano, José Antonio
dc.contributor.authorBianchini, Gianluca
dc.contributor.authorNatali, Claudio
dc.contributor.authorBeccaluva, Luigi
dc.identifier.citationPuga, E., Díaz de Federico, A., Fanning, M., Nieto, J., Rodríguez Martínez-Conde, J., Díaz Puga, M., … Beccaluva, L. (2017). The Betic Ophiolites and the Mesozoic Evolution of the Western Tethys. Geosciences, 7(2), 31.
dc.description.abstractThe Betic Ophiolites consist of numerous tectonic slices, metric to kilometric in size, of eclogitized mafic and ultramafic rocks associated to oceanic metasediments, deriving from the Betic oceanic domain. The outcrop of these ophiolites is aligned along 250 km in the Mulhacén Complex of the Nevado-Filábride Domain, located at the center-eastern zone of the Betic Cordillera (SE Spain). According to petrological/geochemical inferences and SHRIMP (Sensitive High Resolution Ion Micro-Probe) dating of igneous zircons, the Betic oceanic lithosphere originated along an ultra-slow mid-ocean ridge, after rifting, thinning and breakup of the preexisting continental crust. The Betic oceanic sector, located at the westernmost end of the Tethys Ocean, developed from the Lower to Middle Jurassic (185–170 Ma), just at the beginning of the Pangaea break-up between the Iberia-European and the Africa-Adrian plates. Subsequently, the oceanic spreading migrated northeastward to form the Ligurian and Alpine Tethys oceans, from 165 to 140 Ma. Breakup and oceanization isolated continental remnants, known as the Mesomediterranean Terrane, which were deformed and affected by the Upper Cretaceous-Paleocene Eo-Alpine high-pressure metamorphic event, due to the intra-oceanic subduction of the Jurassic oceanic lithosphere and the related continental margins. This process was followed by the partial exhumation of the subducted oceanic rocks onto their continental margins, forming the Betic and Alpine Ophiolites. Subsequently, along the Upper Oligocene and Miocene, the deformed and metamorphosed Mesomediterranean Terrane was dismembered into different continental blocks collectively known as AlKaPeCa microplate (Alboran, Kabylian, Peloritan and Calabrian). In particular, the Alboran block was displaced toward the SW to occupy its current setting between the Iberian and African plates, due to the Neogene opening of the Algero-Provençal Basin. During this translation, the different domains of the Alboran microplate, forming the Internal Zones of the Betic and Rifean Cordilleras, collided with the External Zones representing the Iberian and African margins and, together with them, underwent the later alpine deformation and metamorphism, characterized by local differences of P-T (Pressure-Temperature) conditions. These Neogene metamorphic processes, known as Meso-Alpine and Neo-Alpine events, developed in the Nevado-Filábride Domain under Ab-Ep amphibolite and greenschists facies conditions, respectively, causing retrogradation and intensive deformation of the Eo-Alpine eclogites.es_ES
dc.description.sponsorshipThis research was funded by Project CGL2009-12369 of the Spanish Ministry of Science and Innovation, co-financed with FEDER funds, and by Research Group RNM 333 of Junta de Andalucia (Spain). The authors strongly appreciate the detailed revisions of two anonymous reviewers and the Guest Editor of this Ophiolite Volume, so as the discussion, exchange of ideas and revision of previous versions of this manuscript by A. Martin-Algarra and A. Garcia-Casco.es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherZircon U–Pb SHRIMP datinges_ES
dc.subject.otherEclogitized ophioliteses_ES
dc.subject.otherPangaea break-upes_ES
dc.subject.otherWestern Tethyses_ES
dc.subject.otherBetic Cordilleraes_ES
dc.titleThe Betic Ophiolites and the Mesozoic Evolution of the Western Tethyses_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/Spanish Ministry of Science and Innovation [CGL2009-12369]es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/Junta de Andalucia (Spain) [RNM 333]

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