Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)

The As Pontes basin (12 km2), NW Iberian Peninsula, is bounded by a double restraining bend of a dextral strike-slip fault, which is related to the western onshore end of the Pyrenean belt. Surface and subsurface data obtained from intensive coal exploration and mining in the basin since the 1960s t...

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Detalhes bibliográficos
Autores: Santanach i Prat, Pere F., Ferrús Antón, Beatriz|||0000-0002-0569-3120, Cabrera, Lluís|||0000-0003-0995-310X, Sáez, A.
Formato: artículo
Fecha de publicación:2005
País:España
Recursos:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:86039
Acesso em linha:https://ddd.uab.cat/record/86039
https://dx.doi.org/urn:doi:10.1344/105.000001393
Access Level:acceso abierto
Palavra-chave:Strike-slip basement fault
Restraining bend basin models
Oligocene-Miocene
Iberian Peninsula
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spelling Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)Santanach i Prat, Pere F.Ferrús Antón, Beatriz|||0000-0002-0569-3120Cabrera, Lluís|||0000-0003-0995-310XSáez, A.Strike-slip basement faultRestraining bend basin modelsOligocene-MioceneIberian PeninsulaThe As Pontes basin (12 km2), NW Iberian Peninsula, is bounded by a double restraining bend of a dextral strike-slip fault, which is related to the western onshore end of the Pyrenean belt. Surface and subsurface data obtained from intensive coal exploration and mining in the basin since the 1960s together with additional structural and stratigraphic sequence analysis allowed us to determine the geometric relationships between tectonic structures and stratigraphic markers. The small size of the basin and the large amount of quality data make the As Pontes basin a unique natural laboratory for improving our understanding of the origin and evolution of restraining bends. The double restraining bend is the end stage of the structural evolution of a compressive underlapping stepover, where the basin was formed. During the first stage (stepover stage), which began ca. 30 Ma ago (latest Rupelian) and lasted 3.4 My, two small isolated basins bounded by thrusts and normal faults were formed. For 1.3 My, the strike-slip faults, which defined the stepover, grew towards each other until joining and forming the double restraining bend, which bounds one large As Pontes basin (transition stage). The history of the basin was controlled by the activity of the double restraining bend for a further 3.4 My (restraining bend stage) and ended in mid-Aquitanian times (ca. 22 Ma). 22005-01-0120052005-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/86039https://dx.doi.org/urn:doi:10.1344/105.000001393reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:860392026-06-06T12:50:31Z
dc.title.none.fl_str_mv Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
title Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
spellingShingle Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
Santanach i Prat, Pere F.
Strike-slip basement fault
Restraining bend basin models
Oligocene-Miocene
Iberian Peninsula
title_short Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
title_full Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
title_fullStr Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
title_full_unstemmed Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
title_sort Origin of a restraining bend in an evolving strike-slip system : The Cenozoic As Pontes basin (NW Spain)
dc.creator.none.fl_str_mv Santanach i Prat, Pere F.
Ferrús Antón, Beatriz|||0000-0002-0569-3120
Cabrera, Lluís|||0000-0003-0995-310X
Sáez, A.
author Santanach i Prat, Pere F.
author_facet Santanach i Prat, Pere F.
Ferrús Antón, Beatriz|||0000-0002-0569-3120
Cabrera, Lluís|||0000-0003-0995-310X
Sáez, A.
author_role author
author2 Ferrús Antón, Beatriz|||0000-0002-0569-3120
Cabrera, Lluís|||0000-0003-0995-310X
Sáez, A.
author2_role author
author
author
dc.subject.none.fl_str_mv Strike-slip basement fault
Restraining bend basin models
Oligocene-Miocene
Iberian Peninsula
topic Strike-slip basement fault
Restraining bend basin models
Oligocene-Miocene
Iberian Peninsula
description The As Pontes basin (12 km2), NW Iberian Peninsula, is bounded by a double restraining bend of a dextral strike-slip fault, which is related to the western onshore end of the Pyrenean belt. Surface and subsurface data obtained from intensive coal exploration and mining in the basin since the 1960s together with additional structural and stratigraphic sequence analysis allowed us to determine the geometric relationships between tectonic structures and stratigraphic markers. The small size of the basin and the large amount of quality data make the As Pontes basin a unique natural laboratory for improving our understanding of the origin and evolution of restraining bends. The double restraining bend is the end stage of the structural evolution of a compressive underlapping stepover, where the basin was formed. During the first stage (stepover stage), which began ca. 30 Ma ago (latest Rupelian) and lasted 3.4 My, two small isolated basins bounded by thrusts and normal faults were formed. For 1.3 My, the strike-slip faults, which defined the stepover, grew towards each other until joining and forming the double restraining bend, which bounds one large As Pontes basin (transition stage). The history of the basin was controlled by the activity of the double restraining bend for a further 3.4 My (restraining bend stage) and ended in mid-Aquitanian times (ca. 22 Ma).
publishDate 2005
dc.date.none.fl_str_mv 2
2005-01-01
2005
2005-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/86039
https://dx.doi.org/urn:doi:10.1344/105.000001393
url https://ddd.uab.cat/record/86039
https://dx.doi.org/urn:doi:10.1344/105.000001393
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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