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<datestamp>2018-01-11</datestamp>
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<title lang=en>Crustal-scale transcurrent fault development in a weak-layered crust from an integrated geophysical research: Carboneras Fault Zone, eastern Betic Cordillera, Spain</title>
<creator>Pedrera, Antonio</creator>
<creator>De Lis Mancilla, Flor</creator>
<creator>RUIZ-CONSTAN, Ana</creator>
<creator>Galindo-Zaldivar, Jesus</creator>
<creator>Morales, Jose</creator>
<creator>Arzate, Jorge</creator>
<creator>Marin-Lechado, Carlos</creator>
<creator>Ruano, Patricia</creator>
<creator>Buontempo, Luisa</creator>
<creator>Anahnah, Farida</creator>
<creator>Stich, Daniel</creator>
<contributor>Instituto Geológico y Minero de España (IGME)</contributor>
<contributor>Instituto Andaluz de Geofísica, Universidad de Granada ; Universidad de Granada (UGR)</contributor>
<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 Andaluz de Geofísica, Universidad de Granada ; Université du Québec</contributor>
<contributor>Centro de Geociencias [Queretaro] ; Universidad Nacional Autónoma de México (UNAM)</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-00671024</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00671024</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00671024</source>
<source>Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2010, 11, pp.Q12005. 〈10.1029/2010GC003274〉</source>
<identifier>DOI : 10.1029/2010GC003274</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2010GC003274</relation>
<language>en</language>
<subject lang=da>magnetotelluric data</subject>
<subject lang=da>receiver function</subject>
<subject lang=da>strike-slip fault</subject>
<subject lang=da>folds</subject>
<subject lang=da>crustal detachments</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>New magnetotelluric and receiver transfer function studies provide insights from the upper to the lower crust of the eastern Betic Cordillera, which is deformed by large folds, normal faults, and a major transcurrent left-lateral fault, the Carboneras Fault Zone (CFZ). Receiver function analysis determines a NNW dipping Moho reaching 20 degrees that increases in depth, from 20 km south of the CFZ up to 34 km in the Sierra de Los Filabres. In addition, seismic discontinuities determined in the upper crust are interpreted as major contacts between metamorphic complexes that are detached and folded. The MT inversion model reveals a conductive zone, also representing a crustal seismic discontinuity, associated with the Alpujarride/Nevado-Filabride contact and fitting the N vergent geometry of the Sierra Alhamilla antiform. A small flexure at Moho coincides with the CFZ, as revealed by the Bouguer anomaly trend, in agreement with the receiver function results. Moreover, the Bahr strike and tipper angle at the stations placed closest to the CFZ clearly reveal the continuity of the CFZ at least down to approximately 15 km in depth, crossing all the detected crustal discontinuities up to the Moho. The lack of a clear Moho offset associated with the Carboneras Fault supports the idea that some large strike-slip faults tend to accommodate the deformation by a broadening fault zone at lower crustal levels. Its nucleation could occur at the base of a thin crust, where melting processes critically reduced the lithospheric strength during the late Miocene, to then propagate upward, reaching the topographic surface. Northward, the lithosphere comprised moderately larger strength, and the crustal discontinuities favored the development of larger folds with kilometric amplitude instead of strike-slip faults since the late Miocene.</description>
<date>2010</date>
</dc>
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