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<datestamp>2018-01-11</datestamp>
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<title lang=en>Stress distribution at the transition from subduction to continental collision (northwestern and central Betic Cordillera)</title>
<creator>RUIZ-CONSTAN, Ana</creator>
<creator>Galindo-Zaldivar, J.</creator>
<creator>Pedrera, A.</creator>
<creator>Celerier, Bernard</creator>
<creator>Marin-Lechado, C.</creator>
<contributor>Manteau et Interfaces ; 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>Departamento de Geodinámica, Universidad de Granada ; Université du Québec</contributor>
<contributor>Instituto Geológico y Minero de España (IGME)</contributor>
<contributor>Transferts en milieux poreux ; 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>
<description>International audience</description>
<source>ISSN: 1525-2027</source>
<source>EISSN: 1525-2027</source>
<source>Geochemistry, Geophysics, Geosystems</source>
<publisher>AGU and the Geochemical Society</publisher>
<identifier>hal-00669889</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00669889</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00669889</source>
<source>Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2011, 12, pp.Q12002. 〈10.1029/2011GC003824〉</source>
<identifier>DOI : 10.1029/2011GC003824</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GC003824</relation>
<language>en</language>
<subject lang=en>Betic Cordillera</subject>
<subject lang=en>active tectonics</subject>
<subject lang=en>subduction zones</subject>
<subject lang=en>western Mediterranean</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>We analyze focal mechanisms of shallow-intermediate earthquakes in a NW-SE transect along the western Betic Cordillera and Alboran Sea, and deep earthquakes located in the central Betics to constrain the state of stress at the Gibraltar Arc slow convergence area. Shallow earthquakes (< 40 km) are preferably clustered at the mountain front. A general NW-SE horizontal compression is compatible with the convergence, and NW plunging compression axes are in agreement with frontal thrust activity. Toward the Alboran Sea the earthquakes are progressively deeper, reaching intermediate depths (40-120 km) near the coast and supporting the present-day activity of subduction only in this area. The Iberian continental crust concentrates most of the intermediate seismicity and is forced to partially sink into the mantle, probably through the pull of the oceanic slab. This downdip pull together with the buoyancy of the Iberian continental crust produces the slab curvature, downdip extension in the external arc of the continental slab, and downdip compression in the inner arc. T axes highly dipping to the southeast at 90-120 km depth occur at the oceanic/continental transition. Deep earthquakes (> 620 km) show very similar focal mechanisms, fitting the general slab behavior of resistance to further descent at the 660 km discontinuity. Seismicity features evidence the present-day stress distribution in a context of transition from subduction to continental collision.</description>
<date>2011</date>
</dc>
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