Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)

Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)

Martínez-Loriente, S. ... et al.-- 26 pages, 13 figures, 1 table

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Main Authors: Martínez-Loriente, S., Gràcia, Eulàlia, Bartolomé, Rafael, Sallarès, Valentí, Perea, Héctor, Lo Iacono, Claudio, Dañobeitia, Juan José
Format: artículo biblioteca
Language:English
Published: American Geophysical Union 2013-07
Subjects:Multichannel seismics, Blind thrusts, Strike-slip faults, Seismic hazard assessment, Iberia-Africa boundary, Fault-bend folds,
Online Access:http://hdl.handle.net/10261/86986
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spelling dig-icm-es-10261-869862020-11-10T10:42:35Z Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin) Martínez-Loriente, S. Gràcia, Eulàlia Bartolomé, Rafael Sallarès, Valentí Perea, Héctor Lo Iacono, Claudio Dañobeitia, Juan José Multichannel seismics Blind thrusts Strike-slip faults Seismic hazard assessment Iberia-Africa boundary Fault-bend folds Martínez-Loriente, S. ... et al.-- 26 pages, 13 figures, 1 table Recently acquired high-resolution multichannel seismic profiles together with bathymetric and sub-bottom profiler data from the external part of the Gulf of Cadiz (Iberia-Africa plate boundary) reveal active deformation involving old (Mesozoic) oceanic lithosphere. This area is located 180 km offshore the SW Iberian Peninsula and embraces the prominent NE-SW trending Coral Patch Ridge, and part of the surrounding deep Horseshoe and Seine abyssal plains. E-W trending dextral strike-slip faults showing surface deformation of flower-like structures predominate in the Horseshoe Abyssal Plain, whereas NE-SW trending compressive structures prevail in the Coral Patch Ridge and Seine Hills. Although the Coral Patch Ridge region is characterized by subdued seismic activity, the area is not free from seismic hazard. Most of the newly mapped faults correspond to active blind thrusts and strike-slip faults that are able to generate large magnitude earthquakes (Mw 7.2-8.4). This may represent a significant earthquake and tsunami hazard that has been overlooked so far. Key Points New active structures have been mapped in the Coral Patch Ridge area The newly mapped faults are able to generate large magnitude earthquakes (Mw>7) These new structures may represent a significant earthquake and tsunami hazard ©2013. American Geophysical Union. All Rights Reserved The authors acknowledge the support of the Spanish Ministry of Science and Innovation (MICINN) through National Projects EVENT (CGL2006–12861-C02-02) and SHAKE (CGL2011–30005-C02-02); the European Transnational Access SALVADORE program of the EU (RITA-CT-2004–505322), the ESF EuroMargins SWIM project (01- LEG-EMA09F and REN2002–11234E-MAR), the EU program ‘‘Global Change and Ecosystems’’ contract n. 037110 (NEAREST), the ESF TopoEurope TOPOMED project (CGL2008–03474-E/BTE), and the SWIMGLO project (PTDC/MAR/100522/2008). We also acknowledge funding from the MICINN through the ‘‘Ramon y Cajal’’ program (R. Bartolome) and from the CSIC through a JAE Pre-Doc fellowship (S. Martínez-Loriente) Peer Reviewed 2013-11-19T08:19:17Z 2013-11-19T08:19:17Z 2013-07 2013-11-19T08:19:17Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1002/ggge.20173 issn: 1525-2027 Geochemistry, Geophysics, Geosystems 14(7): 2206-2231 (2013) http://hdl.handle.net/10261/86986 10.1002/ggge.20173 en https://doi.org/10.1002/ggge.20173 open American Geophysical Union
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Multichannel seismics
Blind thrusts
Strike-slip faults
Seismic hazard assessment
Iberia-Africa boundary
Fault-bend folds
Multichannel seismics
Blind thrusts
Strike-slip faults
Seismic hazard assessment
Iberia-Africa boundary
Fault-bend folds
spellingShingle Multichannel seismics
Blind thrusts
Strike-slip faults
Seismic hazard assessment
Iberia-Africa boundary
Fault-bend folds
Multichannel seismics
Blind thrusts
Strike-slip faults
Seismic hazard assessment
Iberia-Africa boundary
Fault-bend folds
Martínez-Loriente, S.
Gràcia, Eulàlia
Bartolomé, Rafael
Sallarès, Valentí
Perea, Héctor
Lo Iacono, Claudio
Dañobeitia, Juan José
Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)
description Martínez-Loriente, S. ... et al.-- 26 pages, 13 figures, 1 table
format artículo
topic_facet Multichannel seismics
Blind thrusts
Strike-slip faults
Seismic hazard assessment
Iberia-Africa boundary
Fault-bend folds
author Martínez-Loriente, S.
Gràcia, Eulàlia
Bartolomé, Rafael
Sallarès, Valentí
Perea, Héctor
Lo Iacono, Claudio
Dañobeitia, Juan José
author_facet Martínez-Loriente, S.
Gràcia, Eulàlia
Bartolomé, Rafael
Sallarès, Valentí
Perea, Héctor
Lo Iacono, Claudio
Dañobeitia, Juan José
author_sort Martínez-Loriente, S.
title Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)
title_short Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)
title_full Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)
title_fullStr Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)
title_full_unstemmed Active deformation in old oceanic lithosphere and significance for earthquake hazard: Seismic imaging of the Coral Patch Ridge area and neighboring abyssal plains (SW Iberian Margin)
title_sort active deformation in old oceanic lithosphere and significance for earthquake hazard: seismic imaging of the coral patch ridge area and neighboring abyssal plains (sw iberian margin)
publisher American Geophysical Union
publishDate 2013-07
url http://hdl.handle.net/10261/86986
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