Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera

The most recent tectonic structures of the central-eastern Internal Zones of the Betic Cordillera (from 3.1ºW to 1.7ºW and to the south of 37.525ºN) include fault and folds developed from the Late Miocene onwards, which are related to N-S/NW-SE directed continental collision and moderate thickening...

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Autores: Pedrera, A., Galindo Zaldívar, J., Marín Lechado, C., García Tortosa, F.J., Ruano, P., López Garrido, A.C., Azañón, J.M., Peláez, J.A., Giaconia, F.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Universidad de Jaén
Repositorio:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
OAI Identifier:oai:ruja.ujaen.es:10953/6904
Acceso en línea:http://dx.doi.org/10.5209/rev_JIGE.2012.v38.n1.39213
https://hdl.handle.net/10953/6904
Access Level:acceso abierto
Palabra clave:Active tectonics
Earthquakes
Tectonic evolution
Gibraltar Arc
55
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spelling Recent and active faults and folds in the central-eastern Internal Zones of the Betic CordilleraPedrera, A.Galindo Zaldívar, J.Marín Lechado, C.García Tortosa, F.J.Ruano, P.López Garrido, A.C.Azañón, J.M.Peláez, J.A.Giaconia, F.Active tectonicsEarthquakesTectonic evolutionGibraltar Arc55The most recent tectonic structures of the central-eastern Internal Zones of the Betic Cordillera (from 3.1ºW to 1.7ºW and to the south of 37.525ºN) include fault and folds developed from the Late Miocene onwards, which are related to N-S/NW-SE directed continental collision and moderate thickening of a crust that is relatively hot at depth. In this setting, E-W to WSW-ENE folds, with locally associated E-W transpressive right-lateral and reverse faults, favoured the emersion of the northern Alborán basin palaeomargin and the progressive intramontane basin disconnection. The NNE-SSW to NE-SW trending regional left-lateral Palomares and Carboneras fault zones are dominant structures in the easternmost part of the cordillera. In addition, NW-SE to WNWESE trending normal and oblique-slip normal faults are widespread. The collision is still active and continues to drive active folds and faults, some probably being the likely source of moderate-sized earthquakes. The Campo de Dalías and surrounding sectors, deformed by active ENE-WSW folds and NW-SE to WNW-ESE oblique-slip normal faults, are probably the sites with the largest concentration of significant earthquakes during recent years. Moderate-magnitude earthquakes (Mw 5.0 to 6.5) have occurred there at fairly regular intervals, in 1804, 1910, and 1994. Toward the east, NW-SE trending normal faults extending from Almería to the Tabernas basin deform the Quaternary rocks with associated moderate seismicity (the 2002 Gergal Mw 4.7 earthquake, and possibly the 1894 Nacimiento earthquake, felt with intensity VII). In the Sorbas-Vera basin, the Palomares fault zone is also responsible for moderate-sized earthquakes (1518 Vera earthquake). In the Almanzora corridor, NW-SE to WNW-ESE trending Lúcar-Somontín faults also could be considered one of the possible source of moderate-magnitude seismicity (1932 Lúcar, Mw 4.8 earthquake felt with intensity VIII). Toward the east, between Albox and Partaloa, several small reverse faults and associated compressive structures deform Quaternary alluvial and fluvial sediments. Although some of these folds reveal a slow and progressive deformation from the Middle Pleistocene onwards, some of these reverse fault segments that deform the western Huércal-Overa basin could host the 1972 NW Partaloa, mbLg 4.8 earthquake, felt with intensity VII.This study was supported by the projects TOPO-IBERIA CONSOLIDER-INGENIO CSD2006-00041, CGL2010-21048, CGL-2008-03474-E, P09-RNM-5388 of the Spanish Ministry of Science and Education, project CGL-2011-29920, as well as by Research Groups RNM-148, RNM-325, and RNM-370 of the Junta de Andalucía Regional Government.Springer Nature202620262012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://dx.doi.org/10.5209/rev_JIGE.2012.v38.n1.39213https://hdl.handle.net/10953/6904reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaéninstname:Universidad de JaénInglésJournal of Iberian GeologyCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/info:eu-repo/semantics/openAccessoai:ruja.ujaen.es:10953/69042026-06-24T12:41:07Z
dc.title.none.fl_str_mv Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
title Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
spellingShingle Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
Pedrera, A.
Active tectonics
Earthquakes
Tectonic evolution
Gibraltar Arc
55
title_short Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
title_full Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
title_fullStr Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
title_full_unstemmed Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
title_sort Recent and active faults and folds in the central-eastern Internal Zones of the Betic Cordillera
dc.creator.none.fl_str_mv Pedrera, A.
Galindo Zaldívar, J.
Marín Lechado, C.
García Tortosa, F.J.
Ruano, P.
López Garrido, A.C.
Azañón, J.M.
Peláez, J.A.
Giaconia, F.
author Pedrera, A.
author_facet Pedrera, A.
Galindo Zaldívar, J.
Marín Lechado, C.
García Tortosa, F.J.
Ruano, P.
López Garrido, A.C.
Azañón, J.M.
Peláez, J.A.
Giaconia, F.
author_role author
author2 Galindo Zaldívar, J.
Marín Lechado, C.
García Tortosa, F.J.
Ruano, P.
López Garrido, A.C.
Azañón, J.M.
Peláez, J.A.
Giaconia, F.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Active tectonics
Earthquakes
Tectonic evolution
Gibraltar Arc
55
topic Active tectonics
Earthquakes
Tectonic evolution
Gibraltar Arc
55
description The most recent tectonic structures of the central-eastern Internal Zones of the Betic Cordillera (from 3.1ºW to 1.7ºW and to the south of 37.525ºN) include fault and folds developed from the Late Miocene onwards, which are related to N-S/NW-SE directed continental collision and moderate thickening of a crust that is relatively hot at depth. In this setting, E-W to WSW-ENE folds, with locally associated E-W transpressive right-lateral and reverse faults, favoured the emersion of the northern Alborán basin palaeomargin and the progressive intramontane basin disconnection. The NNE-SSW to NE-SW trending regional left-lateral Palomares and Carboneras fault zones are dominant structures in the easternmost part of the cordillera. In addition, NW-SE to WNWESE trending normal and oblique-slip normal faults are widespread. The collision is still active and continues to drive active folds and faults, some probably being the likely source of moderate-sized earthquakes. The Campo de Dalías and surrounding sectors, deformed by active ENE-WSW folds and NW-SE to WNW-ESE oblique-slip normal faults, are probably the sites with the largest concentration of significant earthquakes during recent years. Moderate-magnitude earthquakes (Mw 5.0 to 6.5) have occurred there at fairly regular intervals, in 1804, 1910, and 1994. Toward the east, NW-SE trending normal faults extending from Almería to the Tabernas basin deform the Quaternary rocks with associated moderate seismicity (the 2002 Gergal Mw 4.7 earthquake, and possibly the 1894 Nacimiento earthquake, felt with intensity VII). In the Sorbas-Vera basin, the Palomares fault zone is also responsible for moderate-sized earthquakes (1518 Vera earthquake). In the Almanzora corridor, NW-SE to WNW-ESE trending Lúcar-Somontín faults also could be considered one of the possible source of moderate-magnitude seismicity (1932 Lúcar, Mw 4.8 earthquake felt with intensity VIII). Toward the east, between Albox and Partaloa, several small reverse faults and associated compressive structures deform Quaternary alluvial and fluvial sediments. Although some of these folds reveal a slow and progressive deformation from the Middle Pleistocene onwards, some of these reverse fault segments that deform the western Huércal-Overa basin could host the 1972 NW Partaloa, mbLg 4.8 earthquake, felt with intensity VII.
publishDate 2012
dc.date.none.fl_str_mv 2012
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://dx.doi.org/10.5209/rev_JIGE.2012.v38.n1.39213
https://hdl.handle.net/10953/6904
url http://dx.doi.org/10.5209/rev_JIGE.2012.v38.n1.39213
https://hdl.handle.net/10953/6904
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Iberian Geology
dc.rights.none.fl_str_mv CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
instname:Universidad de Jaén
instname_str Universidad de Jaén
reponame_str RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
collection RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
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