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<title lang=en>Thrust-wrench interference tectonics in the Gulf of Cadiz (Africa-Iberia plate boundary in the North-East Atlantic): Insights from analog models</title>
<creator>Duarte, João, </creator>
<creator>Rosas, Filipe, </creator>
<creator>Terrinha, Pedro</creator>
<creator>Gutscher, Marc-André, </creator>
<creator>Malavielle, Jacques</creator>
<creator>Silva, Sonia</creator>
<creator>Matias, Luis</creator>
<contributor>Instituto Dom Luiz ; University of Lisbon</contributor>
<contributor>Faculdade de Ciencias ; Universidade de Lisboa (ULISBOA)</contributor>
<contributor>LNEG ; Unidade de Geologia Marinha</contributor>
<contributor>School of Geosciences ; Monash University [Clayton]</contributor>
<contributor>Domaines Océaniques (LDO) ; Centre National de la Recherche Scientifique (CNRS) - Institut d'écologie et environnement - Observatoire des Sciences de l'Univers - Université de Brest (UBO) - Institut national des sciences de l'Univers (INSU - CNRS)</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>Faculdade de Ciencias ; Universidade de Lisboa (ULISBOA)</contributor>
<description>International audience</description>
<source>ISSN: 0025-3227</source>
<source>Marine Geology</source>
<publisher>Elsevier</publisher>
<identifier>insu-00643630</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00643630</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00643630/document</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00643630/file/Duarte_etal_2011_MS-1.pdf</identifier>
<source>https://hal-insu.archives-ouvertes.fr/insu-00643630</source>
<source>Marine Geology, Elsevier, 2011, 289 (1-4), pp.135-149. 〈10.1016/j.margeo.2011.09.014〉</source>
<identifier>DOI : 10.1016/j.margeo.2011.09.014</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2011.09.014</relation>
<language>en</language>
<subject lang=en>SWIM wrench system</subject>
<subject lang=en>Gulf of Cadiz Accretionary Wedge (GCAW)</subject>
<subject lang=en>thrust-wrench interference</subject>
<subject lang=en>analog modeling</subject>
<subject lang=en>Tethyan-related plate boundary</subject>
<subject>[SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]</subject>
<subject>[PHYS.PHYS.PHYS-GEO-PH] Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>In the Gulf of Cadiz key segment of the Africa-Iberia plate boundary (North-East Atlantic ocean), three main different modes of tectonic interference between a recently identified wrench system (SWIM) and the Gulf of Cadiz Accretionary Wedge (GCAW) were tested through analog sand-box modeling: a) An active accretionary wedge on top of a pre-existent inactive basement fault; b) An active strike-slip fault cutting a previously formed, inactive, accretionary wedge; and c) Simultaneous activity of both the accretionary wedge and the strike-slip fault. The results we obtained and the comparison with the natural deformation pattern favor a tectonic evolution comprising two main steps: i) the formation of the Gulf of Cadiz Accretionary Wedge on top of inactive, Tethyan-related, basement faults (Middle Miocene to ~ 1.8 Ma); ii) subsequent reactivation of these basement faults with dextral strike-slip motion (~ 1.8 Ma to present) simultaneously with continued tectonic accretion in the GCAW. These results exclude the possibility of ongoing active SWIM wrench system cross-cutting an inactive GCAW structure. Our results also support a new interpretation of the SWIM wrench system as fundamentally resulting from strike-slip reactivation of an old (Tethyan-related) plate boundary.</description>
<date>2011-11-01</date>
</dc>
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