High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)

Special issue Geological characterization of the Galicia Bank Region (Atlantic Ocean, NW Iberia).-- 29 pages, 10 figures

Detalhes bibliográficos
Autores: Ercilla, Gemma, García-Gil, Soledad, Estrada, Ferran, Vizcaino, Alexis, Vázquez, Juan Tomás, Díez Tagarró, Susana, Vilas, Federico, Gràcia, Eulàlia, Casas, David, Alonso, Belén, Dañobeitia, Juan José, Farran, Marcel-lí
Formato: artículo
Fecha de publicación:2008
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/26408
Acesso em linha:http://hdl.handle.net/10261/26408
Access Level:acceso abierto
Palavra-chave:Galicia Bank
High-resolution seismic profiles
Stratigraphy
Seismic facies
Facies architecture
Sedimentary evolution
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spelling High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)Ercilla, GemmaGarcía-Gil, SoledadEstrada, FerranVizcaino, AlexisVázquez, Juan TomásDíez Tagarró, SusanaVilas, FedericoGràcia, EulàliaCasas, DavidAlonso, BelénDañobeitia, Juan JoséFarran, Marcel-líGalicia BankHigh-resolution seismic profilesStratigraphySeismic faciesFacies architectureSedimentary evolutionSpecial issue Geological characterization of the Galicia Bank Region (Atlantic Ocean, NW Iberia).-- 29 pages, 10 figuresThe high-resolution seismic stratigraphy of the Galicia Bank Region and adjacent deposits of the neighbouring Iberian and Biscay Abyssal Plains was included as part of the geological studies conducted in the area where the oil-tanker Prestige wreck is located. This seismic stratigraphy is characterized by five seismic units (5 to 1, from oldest to youngest) lying above an irregular acoustic basement defined by a highly fractured system of horsts and grabens. These faulted systems have controlled the local depositional architecture, deforming, fracturing, relocating and distributing sediments since the Valanginian. Three depositional models of facies can be recognized on the Galicia Bank Region and surrounding abyssal plains: bank, escarpment, and abyssal plain facies. The bank facies reflects the depositional evolution from initial filling to obliterating stages of the horsts and grabens. The escarpment facies has a local distribution and represents deposition associated with active slopes of the faulted escarpments. The abyssal plain facies represents gravity flow deposits coming mostly from the bounded-fault flanks of the Galicia Bank Region. The Valanginian to Quaternary sedimentary evolution of the Galicia Bank Region reflects depositional responses to tectonic condition. The occurrence of mass-movements confirms that the syn-rift period (Valanginian to Aptian age) along the Galicia margin was diachronous, beginning in the Interior Basin and shifting later toward the west of the Galicia Bank Region (Deep Galicia Margin). The Albian to Quaternary post-rift evolution is characterized by a decrease in tectonic activity and sedimentary variations in the style of deposition (valley and related features, mass-movement deposits, contourites, and drape deposits) conditioned by changes in the sedimentary processes, paleoenvironments, and tectonic reactivation of the regional slopes. The effects of tectonic movements persist, as evidenced in areas where faulted escarpments and highs outcrop, and in areas of near-surface faulting. The syn-rift and post-rift stages have also conditioned the depositional architecture of the Prestige sinking area. The evolution of the surrounding abyssal plains does not reflect the same pattern to tectonic conditionThe research was supported by the Comisión de Coordinación Científica (MEC) Special Action and CICYT (MEC) ERGAP (Ref. VEM 2003-20093-CO3) and MARCONI (Ref. (REN2001-1734 C03-01/M) projectsPeer reviewedElsevier201020102008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65015867 bytesapplication/pdfhttp://hdl.handle.net/10261/26408reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.margeo.2007.09.009info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/264082026-05-22T06:33:51Z
dc.title.none.fl_str_mv High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
title High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
spellingShingle High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
Ercilla, Gemma
Galicia Bank
High-resolution seismic profiles
Stratigraphy
Seismic facies
Facies architecture
Sedimentary evolution
title_short High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
title_full High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
title_fullStr High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
title_full_unstemmed High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
title_sort High-resolution seismic stratigraphy of the Galicia Bank Region and neighbouring abyssal plains (NW Iberian continental margin)
dc.creator.none.fl_str_mv Ercilla, Gemma
García-Gil, Soledad
Estrada, Ferran
Vizcaino, Alexis
Vázquez, Juan Tomás
Díez Tagarró, Susana
Vilas, Federico
Gràcia, Eulàlia
Casas, David
Alonso, Belén
Dañobeitia, Juan José
Farran, Marcel-lí
author Ercilla, Gemma
author_facet Ercilla, Gemma
García-Gil, Soledad
Estrada, Ferran
Vizcaino, Alexis
Vázquez, Juan Tomás
Díez Tagarró, Susana
Vilas, Federico
Gràcia, Eulàlia
Casas, David
Alonso, Belén
Dañobeitia, Juan José
Farran, Marcel-lí
author_role author
author2 García-Gil, Soledad
Estrada, Ferran
Vizcaino, Alexis
Vázquez, Juan Tomás
Díez Tagarró, Susana
Vilas, Federico
Gràcia, Eulàlia
Casas, David
Alonso, Belén
Dañobeitia, Juan José
Farran, Marcel-lí
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Galicia Bank
High-resolution seismic profiles
Stratigraphy
Seismic facies
Facies architecture
Sedimentary evolution
topic Galicia Bank
High-resolution seismic profiles
Stratigraphy
Seismic facies
Facies architecture
Sedimentary evolution
description Special issue Geological characterization of the Galicia Bank Region (Atlantic Ocean, NW Iberia).-- 29 pages, 10 figures
publishDate 2008
dc.date.none.fl_str_mv 2008
2010
2010
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/10261/26408
url http://hdl.handle.net/10261/26408
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.2007.09.009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 5867 bytes
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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