untitled
<OAI-PMH schemaLocation=http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd>
<responseDate>2018-01-15T18:37:34Z</responseDate>
<request identifier=oai:HAL:hal-00767654v1 verb=GetRecord metadataPrefix=oai_dc>http://api.archives-ouvertes.fr/oai/hal/</request>
<GetRecord>
<record>
<header>
<identifier>oai:HAL:hal-00767654v1</identifier>
<datestamp>2018-01-11</datestamp>
<setSpec>type:ART</setSpec>
<setSpec>subject:sdu</setSpec>
<setSpec>collection:CNRS</setSpec>
<setSpec>collection:UNIV-RENNES1</setSpec>
<setSpec>collection:INSU</setSpec>
<setSpec>collection:GM</setSpec>
<setSpec>collection:OSUR</setSpec>
<setSpec>collection:GIP-BE</setSpec>
<setSpec>collection:GR</setSpec>
<setSpec>collection:GR8</setSpec>
<setSpec>collection:AGROPOLIS</setSpec>
<setSpec>collection:UR1-SDLM</setSpec>
<setSpec>collection:UR1-SDLMJONCH</setSpec>
<setSpec>collection:UNIV-AG</setSpec>
<setSpec>collection:UR1-HAL</setSpec>
<setSpec>collection:GR-3T</setSpec>
<setSpec>collection:B3ESTE</setSpec>
<setSpec>collection:UNIV-MONTPELLIER</setSpec>
</header>
<metadata><dc>
<publisher>HAL CCSD</publisher>
<title lang=en>Oligo-Miocene exhumation of the Beni-Bousera peridotite through a lithosphere-scale extensional shear zone</title>
<creator>Afiri, A.</creator>
<creator>GUEYDAN, Frédéric</creator>
<creator>Pitra, P.</creator>
<creator>Essaifi, A.</creator>
<creator>Precigout, J.</creator>
<contributor>Géosciences Rennes (GR) ; Université de Rennes 1 (UR1) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire des Sciences de l'Univers de Rennes (OSUR) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Systèmes Tectoniques ; 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) - 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>Terre, Temps, Traçage ; Géosciences Rennes (GR) ; Université de Rennes 1 (UR1) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire des Sciences de l'Univers de Rennes (OSUR) - Centre National de la Recherche Scientifique (CNRS) - Université de Rennes 1 (UR1) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire des Sciences de l'Univers de Rennes (OSUR) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Faculté des Sciences Semlalia, Marrakech ; Université du Québec</contributor>
<contributor>Eidgenössische Technische Hochschule [Zürich] (ETH Zürich)</contributor>
<source>ISSN: 0985-3111</source>
<source>Geodinamica Acta</source>
<publisher>Taylor & Francis</publisher>
<identifier>hal-00767654</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00767654</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00767654</source>
<source>Geodinamica Acta, Taylor & Francis, 2011, 24 (1), pp.49-60. 〈10.3166/ga.24.49-60〉</source>
<identifier>DOI : 10.3166/ga.24.49-60</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.3166/ga.24.49-60</relation>
<language>en</language>
<subject lang=en>subcontinental mantle exhumation</subject>
<subject lang=en>betics</subject>
<subject lang=en>rif</subject>
<subject lang=en>mantle shear zone slab roll-back</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>New structural data and P-T estimates of syn-deformational assemblages within the Beni Bousera peridotites and their crustal envelope are used to explain their Alpine exhumation. The Beni Bousera peridotites occur as thin sheets within high grade crustal units of the lower Sebtides (inner Rif, Morocco) and are composed of weakly deformed spinel lherzolite in the core of the massif and garnet-spinel mylonite at the rim. The main foliation trajectories in both the peridotites and overlying crustal units show systematic rotation towards their mutual contact, indicating a kilometer-scale top to the NW shearing with a dextral component along this crust/mantle contact. Widespread top to the NW shear criteria within the crustal units overlying the peridotite support this feature. Available ages constrain the development of the main foliation in both the peridotites and crustal rocks between 25 and 20 Ma. New P-T data from the peridotites show that deformation occurs during decompression from approximate to 22 kbar, 1050 degrees C to approximate to 9-15 kbar, 800 degrees C. As a consequence, exhumation of the Beni Bousera peridotites takes place during the Oligo-Miocene lithosphere thinning in the footwall of a lithospheric extensional shear zone. The exceptional preservation of garnet within the mylonitic peridotites results from rapid cooling of the border of the massif due to the juxtaposition with colder crustal rocks along this shear zone. Uplifting of the hot mantle rocks simultaneously induces high temperature metamorphism in the overlying crustal units. These new findings allow us to reconstruct the deformation history of the Beni Bousera region and the Alboran domain in the framework of the western Mediterranean geodynamics during the last 40 Myrs.. (C) 2011 Lavoisier SAS. All rights reserved</description>
<date>2011</date>
</dc>
</metadata>
</record>
</GetRecord>
</OAI-PMH>
