Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain

21 páginas, 15 figuras, 2 tablas

Detalles Bibliográficos
Autores: Azañón, José Miguel, Azor, Antonio, Yesares, Jesús, Tsige, Meaza, Mateos Ruiz, Rosa María, Nieto, F., Delgado, J., López Chicano, Manuel, Martín Rosales, Wenceslao, Rodríguez-Fernández, José
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/32439
Acceso en línea:http://hdl.handle.net/10261/32439
Access Level:acceso abierto
Palabra clave:Complex landslides
Flysch formation
Smectite
Swelling pressure
Betic Cordilleres
Spain
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network_acronym_str ES
network_name_str España
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spelling Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast SpainAzañón, José MiguelAzor, AntonioYesares, JesúsTsige, MeazaMateos Ruiz, Rosa MaríaNieto, F.Delgado, J.López Chicano, ManuelMartín Rosales, WenceslaoRodríguez-Fernández, JoséComplex landslidesFlysch formationSmectiteSwelling pressureBetic CordilleresSpain21 páginas, 15 figuras, 2 tablasComplex landslides in clay-bearing sediments are investigated in two moderate-relief regions of Southeast Spain. Both regions, more than 100 km apart show landslides affecting the same Flysch formation, which outcrops widely in the central and western Betic Cordillera along the contact between the External (South Iberian Domain) and Internal (Alborán Domain) zones. Intense rainfall episodes can be considered as the main triggering factor for slope failures in these two areas. We have chosen two landslides (Diezma and Riogordo landslides), one from each area of study, to investigate their morphological and geotechnical features in order to establish the relative importance of the different controlling factors. From a kinematic point of view, the two features studied in detail can be referred as to rotational failures, evolving downhill to slow earthflows. The movement was concentrated on several surfaces developed on a clay-rich layer mostly constituted by smectite. This clay mineral is of critical relevance to the mechanical behaviour of soils and Flysch-like formations, being very consistent at dry conditions, but rapidly losing its strength at wet conditions. Thus, softened smectite-rich clay layers with high water contents can approach the properties of a lubricant, which, in turn, can be critical for slope stability. In addition to their high plasticity, these clays have a high swelling potential, which can induce significant vertical overpressure, thus reducing even more the strength properties of the Flysch formation. In Southeast Spain, a region with a Mediterranean rainfall regime, slope stability can be seriously influenced by the presence of these smectite-rich clay layers in a formation of regional extent, as is the case of the Flysch formation. Therefore, this lithologically-controlled factor should be taken into account when evaluating landslide hazard in the Betic Cordillera.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201120112010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/32439reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.geomorph.2009.09.012Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/324392026-05-22T06:33:51Z
dc.title.none.fl_str_mv Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
title Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
spellingShingle Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
Azañón, José Miguel
Complex landslides
Flysch formation
Smectite
Swelling pressure
Betic Cordilleres
Spain
title_short Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
title_full Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
title_fullStr Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
title_full_unstemmed Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
title_sort Regional-scale high-plasticity clay-bearing formation as controlling factor on landslides in Southeast Spain
dc.creator.none.fl_str_mv Azañón, José Miguel
Azor, Antonio
Yesares, Jesús
Tsige, Meaza
Mateos Ruiz, Rosa María
Nieto, F.
Delgado, J.
López Chicano, Manuel
Martín Rosales, Wenceslao
Rodríguez-Fernández, José
author Azañón, José Miguel
author_facet Azañón, José Miguel
Azor, Antonio
Yesares, Jesús
Tsige, Meaza
Mateos Ruiz, Rosa María
Nieto, F.
Delgado, J.
López Chicano, Manuel
Martín Rosales, Wenceslao
Rodríguez-Fernández, José
author_role author
author2 Azor, Antonio
Yesares, Jesús
Tsige, Meaza
Mateos Ruiz, Rosa María
Nieto, F.
Delgado, J.
López Chicano, Manuel
Martín Rosales, Wenceslao
Rodríguez-Fernández, José
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Complex landslides
Flysch formation
Smectite
Swelling pressure
Betic Cordilleres
Spain
topic Complex landslides
Flysch formation
Smectite
Swelling pressure
Betic Cordilleres
Spain
description 21 páginas, 15 figuras, 2 tablas
publishDate 2010
dc.date.none.fl_str_mv 2010
2011
2011
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/10261/32439
url http://hdl.handle.net/10261/32439
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.geomorph.2009.09.012
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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
_version_ 1869425695400132608
score 15.198674

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