Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain

[EN] A paleoseismological study of late Miocene lacustrine sediments was carried out in the Neogene basins of the Prebetic Zone in Albacete (Spain). We developed a multidisciplinary methodology which could be used to extrapolate the paleoseismic data to the present d ay. This multidisciplinary appro...

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Detalles Bibliográficos
Autores: Rodríguez-Pascua, M. A., Vicente, G. de, Calvo Sorando, J. P.
Tipo de recurso: artículo
Fecha de publicación:2001
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/5287
Acceso en línea:http://hdl.handle.net/10261/5287
Access Level:acceso abierto
Palabra clave:Seismites
Lacustrine deposits
Varved sediments
Tectonics
Stress field
Paleoearthquake recurrence
Sismita
Depósitos lacustres
Sedimentos varvados
Tectónica
Campos de esfuerzo
Intervalos de recurrencia de paleoterremotos
Intervals "b" value
Parámetro "b"
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oai_identifier_str oai:digital.csic.es:10261/5287
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
Estudio paleosismológico en sucesiones lacustres del Mioceno superior en la Zona Prebética, SE de España
title Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
spellingShingle Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
Rodríguez-Pascua, M. A.
Seismites
Lacustrine deposits
Varved sediments
Tectonics
Stress field
Paleoearthquake recurrence
Sismita
Depósitos lacustres
Sedimentos varvados
Tectónica
Campos de esfuerzo
Intervalos de recurrencia de paleoterremotos
Intervals "b" value
Parámetro "b"
title_short Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
title_full Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
title_fullStr Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
title_full_unstemmed Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
title_sort Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE Spain
dc.creator.none.fl_str_mv Rodríguez-Pascua, M. A.
Vicente, G. de
Calvo Sorando, J. P.
author Rodríguez-Pascua, M. A.
author_facet Rodríguez-Pascua, M. A.
Vicente, G. de
Calvo Sorando, J. P.
author_role author
author2 Vicente, G. de
Calvo Sorando, J. P.
author2_role author
author
dc.subject.none.fl_str_mv Seismites
Lacustrine deposits
Varved sediments
Tectonics
Stress field
Paleoearthquake recurrence
Sismita
Depósitos lacustres
Sedimentos varvados
Tectónica
Campos de esfuerzo
Intervalos de recurrencia de paleoterremotos
Intervals "b" value
Parámetro "b"
topic Seismites
Lacustrine deposits
Varved sediments
Tectonics
Stress field
Paleoearthquake recurrence
Sismita
Depósitos lacustres
Sedimentos varvados
Tectónica
Campos de esfuerzo
Intervalos de recurrencia de paleoterremotos
Intervals "b" value
Parámetro "b"
description [EN] A paleoseismological study of late Miocene lacustrine sediments was carried out in the Neogene basins of the Prebetic Zone in Albacete (Spain). We developed a multidisciplinary methodology which could be used to extrapolate the paleoseismic data to the present d ay. This multidisciplinary approach includes different disciplines, i.e. stratigraphy, structural analysis, seismological analysis and paleoseismology. Paleoseismological analysis was focussed on both shallow and deep lake deposits given that these sediments behave differently in different deformation fields. The seismites formed in shallow sediments were generated by liquefaction and include: sand dikes, pillow structures and intruded and fractured gr avels. The deep lake deposits show varied structures, such as loop bedding, disturbed va rved lamination, mixed layers and pseudonodules. Seismites indicate paleoeart hquake magnitude intervals. The trends of the seismites are usually oriented ve ry close to the stress field trends (from the late Miocene to the Present): NW-SE and NE-SW trends. This constitutes a link between tectonics and seismites. The va rved annual sedimentation evidenced by the deep lake facies was used as a relative dating method. Mixed layers were employed as paleoseismic indicators to calculate the earthquake recurrence interval. The mean recurrence interval is close to 130 years (9446 years of total record with 73 dated events), one maximum interval of 454 years and one minimum interval of 23 years and the mean estimated magnitude value is 5.1. The Gutenberg-Richter relationship shows similar "b" values close to 0.86 from paleoseismological and seismological data. This suggests that the seismic conditions have been similar since the late Miocene.
publishDate 2001
dc.date.none.fl_str_mv 2001
2008
2008
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/10261/5287
url http://hdl.handle.net/10261/5287
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 518561 bytes
application/pdf
dc.publisher.none.fl_str_mv CSIC - Instituto de Ciencias de la Tierra Jaume Almera (ICTJA)
publisher.none.fl_str_mv CSIC - Instituto de Ciencias de la Tierra Jaume Almera (ICTJA)
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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spelling Paleoseismological analysis of late Miocene lacustrine successions in the Prebetic Zone, SE SpainEstudio paleosismológico en sucesiones lacustres del Mioceno superior en la Zona Prebética, SE de EspañaRodríguez-Pascua, M. A.Vicente, G. deCalvo Sorando, J. P.SeismitesLacustrine depositsVarved sedimentsTectonicsStress fieldPaleoearthquake recurrenceSismitaDepósitos lacustresSedimentos varvadosTectónicaCampos de esfuerzoIntervalos de recurrencia de paleoterremotosIntervals "b" valueParámetro "b"[EN] A paleoseismological study of late Miocene lacustrine sediments was carried out in the Neogene basins of the Prebetic Zone in Albacete (Spain). We developed a multidisciplinary methodology which could be used to extrapolate the paleoseismic data to the present d ay. This multidisciplinary approach includes different disciplines, i.e. stratigraphy, structural analysis, seismological analysis and paleoseismology. Paleoseismological analysis was focussed on both shallow and deep lake deposits given that these sediments behave differently in different deformation fields. The seismites formed in shallow sediments were generated by liquefaction and include: sand dikes, pillow structures and intruded and fractured gr avels. The deep lake deposits show varied structures, such as loop bedding, disturbed va rved lamination, mixed layers and pseudonodules. Seismites indicate paleoeart hquake magnitude intervals. The trends of the seismites are usually oriented ve ry close to the stress field trends (from the late Miocene to the Present): NW-SE and NE-SW trends. This constitutes a link between tectonics and seismites. The va rved annual sedimentation evidenced by the deep lake facies was used as a relative dating method. Mixed layers were employed as paleoseismic indicators to calculate the earthquake recurrence interval. The mean recurrence interval is close to 130 years (9446 years of total record with 73 dated events), one maximum interval of 454 years and one minimum interval of 23 years and the mean estimated magnitude value is 5.1. The Gutenberg-Richter relationship shows similar "b" values close to 0.86 from paleoseismological and seismological data. This suggests that the seismic conditions have been similar since the late Miocene.[ES] El estudio paleosismológico en las cuencas neógenas (Mioceno superior) lacustres del Prebético de Albacete ha sido abordado mediante un enfoque multidisciplinar para poder extrapolar los datos paleosímicos a la actualidad. Dicho enfoque integra las siguientes disciplinas: estratigrafía, análisis estructural, análisis de la sismicidad y paleosismología. El estudio paleosismológico se ha realizado en depósitos de facies someras y profundas, ya que los sedimentos de ambas zonas presentan un comportamiento diferente frente a la def o rmación. Las sismitas localizadas en sedimentos someros fueron generadas por fenómenos de licuefacción y son: diques de arena, est ructuras en almohadilla y licuefacción y fracturación en gr avas. Las zonas profundas presentan estructuras más diversas: loop bedding, alteración de la estructura planar de va rvas, niveles de mezcla y pseudonódulos. Las sismitas estudiadas se pueden utilizar como indicadores de intervalos de magnitudes sísmicas. Las estructuras se orientan sistemáticamente según los campos de esfuerzo reciente y actual (que se mantienen desde el Mioceno superior hasta la actualidad): NW-SE y NE-SW. Éste es un punto que permite relacionar genéticamente la tectónica y las sismitas. Se ha utilizado el carácter anual de la sedimentación va rvada para datar de forma relativa las e s t ructuras y establecer periodos de recurrencia de paleoterremotos. El intervalo de recurrencia medio está próximo a los 130 años (9.446 años de registro total y 73 eventos datados), el intervalo máximo es de 454 años y el mínimo de 23 años y la magnitud media estimada es de 5,1. Se ha aplicado la ley de Gutenberg-Richter a los datos paleosísmicos y de sismicidad actual y se obtienen valores del parámetro "b" muy similares, próximos a 0,86. Todas estas premisas indican que las condiciones de la sismicidad en el Mioceno superior fueron muy similares a las actuales.We thank P. Santanach and E. Masana for editing this monograph. We are indebted to S. Martín Velázquez, S. Jiménez Sánchez and D. Gómez Gras, who helped with the field work . We also thank Ll. Cabrera and A. Estévez for their invaluable comments on the content of the paper. Financial support from the "Consejo de Seguridad Nuclear" of Spain and the CICYT project AMB 94-0994 is gratefully acknowled ged .Peer reviewedCSIC - Instituto de Ciencias de la Tierra Jaume Almera (ICTJA)200820082001info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501518561 bytesapplication/pdfhttp://hdl.handle.net/10261/5287reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/52872026-05-22T06:33:51Z
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