Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data
19 pages, 18 figures, 1 table
| Autores: | , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2009 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/17760 |
| Acceso en línea: | http://hdl.handle.net/10261/17760 |
| Access Level: | acceso abierto |
| Palabra clave: | Gulf of Cadiz Southwest Iberia Margin Multibeam bathymetry Morphotectonics Seismotectonics Wrench tectonics Strain partitioning Migration of deformation |
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Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection dataTerrinha, PedroMatias, L.Vicente, J.Duarte, João C.Luis, JoaquimMenezes Pinheiro, LuisLourenço, N.Díez Tagarró, SusanaRosas, FilipeMagalhães, Vitor HugoValadares, V.Zitellini, NevioRoque, CristinaMendes-Victor, L.MATESPRO TeamGulf of CadizSouthwest Iberia MarginMultibeam bathymetryMorphotectonicsSeismotectonicsWrench tectonicsStrain partitioningMigration of deformation19 pages, 18 figures, 1 tableThe Gulf of Cadiz, off SW Iberia and the NW Moroccan margin, straddles the cryptic plate boundary between Africa and Eurasia, a region where the orogenic Alpine compressive deformation in the continental collision zone passes laterally to the west to strike-slip deformation. A set of new multibeam bathymetry, multi-channel and single channel seismic data presented here image the main morphological features of tectonic origin of a significant part of the Gulf of Cadiz from the continental shelf to the abyssal plain. These morphotectonic features are shown to result from the reactivation of deeply rooted faults that changed their kinematics from the early Mesozoic rifting, through the Late Cretaceous-Paleogene collision, to Pliocene-Quaternary thrusting and wrenching. The old faults control deep incised, more than 100 km long canyons and valleys. Several effects of neotectonics on deep water seabed are shown. These include: i) the complex morphology caused by wrenching on the 230 km long WNW-ESE faults that produced en echelon folds on the sediments; ii) the formation of up to 5 km wide crescent shaped scours at roughly 4 km water depth by reactivation of thrusts; iii) 10 km long creep folds on the continental slope; and iv) the formation of landslides on active fault escarpments. The present day deformation is partitioned on NE-SW thrusts and WNW-ESE to W-E strike-slip faults and is propagating northwards on N-S trending thrusts along the West Iberia Margin from 35.5°N to 38°N, which should be considered for seismic hazardThe work was sponsored by MATESPRO (PDCTM/P/MAR/15264/1999), EUROMARGINS SWIM (01-LEC-EMA09F), MVSEIS (01-LEC_EMA24F; PDCTM 72003/DIV/40018) and TOPOMED (TOPOEUROPE/0001/2007) projects. Instituto Scienze Marine (CNR) Bologna contribution 1587. JD and VV benefited from PhD grants from Fundação para a Ciência e a Tecnologia (SFRH/BD/31188/2006, SFRH/BD/17603/2004). We acknowledge the PARSIFAL Project MAR1998-1837-CE for the use of bathymetry data. We acknowledge the financial support from the ESF EuroMargins Program, contract n. 01-LEC-EMA09F and from EU Specific Programme "Integrating and Strengthening the European Research Area", Sub-Priority 1.1.6.3, "Global Change and Ecosystems", contract n. 037110 (NEAREST)Peer reviewedElsevier200920092009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501952681 bytesapplication/pdfhttp://hdl.handle.net/10261/17760reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.margeo.2009.09.012info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/177602026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| title |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| spellingShingle |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data Terrinha, Pedro Gulf of Cadiz Southwest Iberia Margin Multibeam bathymetry Morphotectonics Seismotectonics Wrench tectonics Strain partitioning Migration of deformation |
| title_short |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| title_full |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| title_fullStr |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| title_full_unstemmed |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| title_sort |
Morphotectonics and Strain Partitioning at the Iberia-Africa plate boundary from multibeam and seismic reflection data |
| dc.creator.none.fl_str_mv |
Terrinha, Pedro Matias, L. Vicente, J. Duarte, João C. Luis, Joaquim Menezes Pinheiro, Luis Lourenço, N. Díez Tagarró, Susana Rosas, Filipe Magalhães, Vitor Hugo Valadares, V. Zitellini, Nevio Roque, Cristina Mendes-Victor, L. MATESPRO Team |
| author |
Terrinha, Pedro |
| author_facet |
Terrinha, Pedro Matias, L. Vicente, J. Duarte, João C. Luis, Joaquim Menezes Pinheiro, Luis Lourenço, N. Díez Tagarró, Susana Rosas, Filipe Magalhães, Vitor Hugo Valadares, V. Zitellini, Nevio Roque, Cristina Mendes-Victor, L. MATESPRO Team |
| author_role |
author |
| author2 |
Matias, L. Vicente, J. Duarte, João C. Luis, Joaquim Menezes Pinheiro, Luis Lourenço, N. Díez Tagarró, Susana Rosas, Filipe Magalhães, Vitor Hugo Valadares, V. Zitellini, Nevio Roque, Cristina Mendes-Victor, L. MATESPRO Team |
| author2_role |
author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Gulf of Cadiz Southwest Iberia Margin Multibeam bathymetry Morphotectonics Seismotectonics Wrench tectonics Strain partitioning Migration of deformation |
| topic |
Gulf of Cadiz Southwest Iberia Margin Multibeam bathymetry Morphotectonics Seismotectonics Wrench tectonics Strain partitioning Migration of deformation |
| description |
19 pages, 18 figures, 1 table |
| publishDate |
2009 |
| dc.date.none.fl_str_mv |
2009 2009 2009 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/17760 |
| url |
http://hdl.handle.net/10261/17760 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
https://doi.org/10.1016/j.margeo.2009.09.012 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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952681 bytes application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
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Elsevier |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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