Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz
X Congreso Geológico de España, 5-7 de julio 2021, Vitoria-Gasteiz.-- 4 pages, 4 figures [EN] The Gulf of Cadiz upper slope in the area close to the Strait of Gibraltar is covered by a plastered drift deposited by the activity of the Mediterranean Outflow Water (MOW) and the North Atlantic Central W...
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Sociedad Geológica de España
2021
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Online Access: | http://hdl.handle.net/10261/263959 https://doi.org/10.13039/501100003329 |
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ftcsic:oai:digital.csic.es:10261/263959 2024-02-11T10:06:25+01:00 Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz Interacción entre procesos gravitacionales y oceanográficos en los valles submarinos del talud superior del Golfo de Cádiz García, Marga Mena, Anxo Hernández-Molina, Francisco J. Alonso, Belén Ercilla, Gemma Casas, David Llave, Estefanía Fernández-Salas, L. M. Lobo, F. J. Ministerio de Economía y Competitividad (España) 2021 http://hdl.handle.net/10261/263959 https://doi.org/10.13039/501100003329 unknown Sociedad Geológica de España #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO//CGL2015-74216-JIN/ES/SEDIMENTACION GRAVITACIONAL VS. CONTORNITICA EN EL TALUD SUPERIOR DE CADIZ: IMPLICACIONES CONCEPTUALES EN LOS MODELOS DE CONSTRUCCION DE TALUDES CONTINENTALES/ info:eu-repo/grantAgreement/MINECO//CTM2016-75129-C3-1-R info:eu-repo/grantAgreement/MINECO//CTM2015-65461-C2-1-R/ES/FACTORES DE RIESGO GEOLOGICO ASOCIADO A CABECERAS DE CAÑONES SUBMARINOS DEL SUR DE LA PENINSULA IBERICA/ info:eu-repo/grantAgreement/MINECO//CGL2016-80445-R https://sociedadgeologica.org/publicaciones/geotemas/geo-temas-18/ Sí issn: 1576-5172 e-issn: 2792-2308 Geo-temas 18: 748-751 (2021) http://hdl.handle.net/10261/263959 http://dx.doi.org/10.13039/501100003329 none Plastered drift Gullies Sedimentary facies Bottom currents Gulf of Cadiz Depósito adosado Facies sedimentarias Corrientes de fondo Golfo de Cádiz comunicación de congreso http://purl.org/coar/resource_type/c_5794 2021 ftcsic https://doi.org/10.13039/501100003329 2024-01-16T11:21:00Z X Congreso Geológico de España, 5-7 de julio 2021, Vitoria-Gasteiz.-- 4 pages, 4 figures [EN] The Gulf of Cadiz upper slope in the area close to the Strait of Gibraltar is covered by a plastered drift deposited by the activity of the Mediterranean Outflow Water (MOW) and the North Atlantic Central Water (NACW). A number of small gullies are incised across the plastered drift, due to the interaction between gravitational and contouritic processes. The study of parametric sounder profiles and sedimentological analyses of nine sediment cores obtained from the axes of two gullies and from the undisturbed upper slope, giving a Holocene age frame, has allowed analyzing the recent sedimentary processes and their spatial and temporal variability. The upper slope shows a general increase in grain size towards the NW, suggesting bottom current intensification and/or the occurrence of gravity flows from the continental shelf and shelf-edge. The two studied upper slope gullies display significant differences in their recent activity and dominant processes. The one located to the SE seems to have been inactive since about 5.9 ka, and it has been draped by contouritic deposits. In contrast, the gully located to the NW has been a sediment transport conduit for the entire time span recorded in the sediment cores [ES] El talud superior del margen Ibérico del Golfo de Cádiz en las proximidades del Estrecho de Gibraltar está ocupado por un depósito contornítico adosado resultado de la circulación del Agua Mediterránea de Salida (Mediterranean Outflow Water, MOW) y de la Masa de Agua Central Noratlántica (North Atlantic Central Water, NACW). En él se encajan pequeños valles submarinos (gullies) debido a la interacción entre los procesos gravitacionales y contorníticos. Mediante el estudio de perfiles de sonda paramétrica y el análisis sedimentológico de nueve testigos obtenidos en el área del talud superior no afectada por gullies y en los ejes de dos gullies, cuya datación corresponde al Holoceno, este estudio analiza los ... Conference Object North Atlantic Digital.CSIC (Spanish National Research Council) Depósito ENVELOPE(-57.500,-57.500,-64.383,-64.383) Estrecho ENVELOPE(-60.783,-60.783,-62.467,-62.467) The Gully ENVELOPE(-57.731,-57.731,51.567,51.567) Valles ENVELOPE(-58.783,-58.783,-62.167,-62.167) |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Plastered drift Gullies Sedimentary facies Bottom currents Gulf of Cadiz Depósito adosado Facies sedimentarias Corrientes de fondo Golfo de Cádiz |
spellingShingle |
Plastered drift Gullies Sedimentary facies Bottom currents Gulf of Cadiz Depósito adosado Facies sedimentarias Corrientes de fondo Golfo de Cádiz García, Marga Mena, Anxo Hernández-Molina, Francisco J. Alonso, Belén Ercilla, Gemma Casas, David Llave, Estefanía Fernández-Salas, L. M. Lobo, F. J. Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz |
topic_facet |
Plastered drift Gullies Sedimentary facies Bottom currents Gulf of Cadiz Depósito adosado Facies sedimentarias Corrientes de fondo Golfo de Cádiz |
description |
X Congreso Geológico de España, 5-7 de julio 2021, Vitoria-Gasteiz.-- 4 pages, 4 figures [EN] The Gulf of Cadiz upper slope in the area close to the Strait of Gibraltar is covered by a plastered drift deposited by the activity of the Mediterranean Outflow Water (MOW) and the North Atlantic Central Water (NACW). A number of small gullies are incised across the plastered drift, due to the interaction between gravitational and contouritic processes. The study of parametric sounder profiles and sedimentological analyses of nine sediment cores obtained from the axes of two gullies and from the undisturbed upper slope, giving a Holocene age frame, has allowed analyzing the recent sedimentary processes and their spatial and temporal variability. The upper slope shows a general increase in grain size towards the NW, suggesting bottom current intensification and/or the occurrence of gravity flows from the continental shelf and shelf-edge. The two studied upper slope gullies display significant differences in their recent activity and dominant processes. The one located to the SE seems to have been inactive since about 5.9 ka, and it has been draped by contouritic deposits. In contrast, the gully located to the NW has been a sediment transport conduit for the entire time span recorded in the sediment cores [ES] El talud superior del margen Ibérico del Golfo de Cádiz en las proximidades del Estrecho de Gibraltar está ocupado por un depósito contornítico adosado resultado de la circulación del Agua Mediterránea de Salida (Mediterranean Outflow Water, MOW) y de la Masa de Agua Central Noratlántica (North Atlantic Central Water, NACW). En él se encajan pequeños valles submarinos (gullies) debido a la interacción entre los procesos gravitacionales y contorníticos. Mediante el estudio de perfiles de sonda paramétrica y el análisis sedimentológico de nueve testigos obtenidos en el área del talud superior no afectada por gullies y en los ejes de dos gullies, cuya datación corresponde al Holoceno, este estudio analiza los ... |
author2 |
Ministerio de Economía y Competitividad (España) |
format |
Conference Object |
author |
García, Marga Mena, Anxo Hernández-Molina, Francisco J. Alonso, Belén Ercilla, Gemma Casas, David Llave, Estefanía Fernández-Salas, L. M. Lobo, F. J. |
author_facet |
García, Marga Mena, Anxo Hernández-Molina, Francisco J. Alonso, Belén Ercilla, Gemma Casas, David Llave, Estefanía Fernández-Salas, L. M. Lobo, F. J. |
author_sort |
García, Marga |
title |
Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz |
title_short |
Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz |
title_full |
Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz |
title_fullStr |
Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz |
title_full_unstemmed |
Gravitational and oceanographic processes interaction in the upper slope gullies of the Gulf of Cadiz |
title_sort |
gravitational and oceanographic processes interaction in the upper slope gullies of the gulf of cadiz |
publisher |
Sociedad Geológica de España |
publishDate |
2021 |
url |
http://hdl.handle.net/10261/263959 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-57.500,-57.500,-64.383,-64.383) ENVELOPE(-60.783,-60.783,-62.467,-62.467) ENVELOPE(-57.731,-57.731,51.567,51.567) ENVELOPE(-58.783,-58.783,-62.167,-62.167) |
geographic |
Depósito Estrecho The Gully Valles |
geographic_facet |
Depósito Estrecho The Gully Valles |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO//CGL2015-74216-JIN/ES/SEDIMENTACION GRAVITACIONAL VS. CONTORNITICA EN EL TALUD SUPERIOR DE CADIZ: IMPLICACIONES CONCEPTUALES EN LOS MODELOS DE CONSTRUCCION DE TALUDES CONTINENTALES/ info:eu-repo/grantAgreement/MINECO//CTM2016-75129-C3-1-R info:eu-repo/grantAgreement/MINECO//CTM2015-65461-C2-1-R/ES/FACTORES DE RIESGO GEOLOGICO ASOCIADO A CABECERAS DE CAÑONES SUBMARINOS DEL SUR DE LA PENINSULA IBERICA/ info:eu-repo/grantAgreement/MINECO//CGL2016-80445-R https://sociedadgeologica.org/publicaciones/geotemas/geo-temas-18/ Sí issn: 1576-5172 e-issn: 2792-2308 Geo-temas 18: 748-751 (2021) http://hdl.handle.net/10261/263959 http://dx.doi.org/10.13039/501100003329 |
op_rights |
none |
op_doi |
https://doi.org/10.13039/501100003329 |
_version_ |
1790604130778087424 |