Alborán basin, southern Spain. Part I: Geomorphology

Bathymetric, 3D relief and shaded relief maps created from multibeam echo-sounding data image the morphology of the Alborán Basin, a structural low along the east–west-trending Eurasian–African plates boundary. Topographic features in the basin are the consequence of volcanism associated with Miocen...

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Authors: Pereiro-Muñoz, José Antonio, Gómez-Ballesteros, María, Montoya, I., Rivera, Jesús, Acosta-Yepes, Juan, Uchupi, E.
Format: article
Publication Date:2008
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/319937
Online Access:http://hdl.handle.net/10261/319937
Access Level:Open access
Keyword:Sede Central IEO
Medio Marino
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oai_identifier_str oai:digital.csic.es:10261/319937
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repository_id_str
spelling Alborán basin, southern Spain. Part I: GeomorphologyPereiro-Muñoz, José AntonioGómez-Ballesteros, MaríaMontoya, I.Rivera, JesúsAcosta-Yepes, JuanUchupi, E.Sede Central IEOMedio MarinoBathymetric, 3D relief and shaded relief maps created from multibeam echo-sounding data image the morphology of the Alborán Basin, a structural low along the east–west-trending Eurasian–African plates boundary. Topographic features in the basin are the consequence of volcanism associated with Miocene rifting, rift and post-rift sedimentation, and recent faulting resulting from the convergence of the African–Eurasian plates. Pleistiocene glacially induced regressions/transgressions when the sea level dropped to about 150 m below its present level gas seeps and bottom currents. Recent faulting and the Pleistocene transgressions/regressions led to mass-wasting, formation of turbidity currents and canyon erosion on the basin's slopes. Recent fault traces at the base of the northern basin slope have also served as passageways for thermogenic methane, the oxidation of which by bacteria led to the formation of carbonate mounds along the fault intercepts on the sea floor. Expulsion of thermogenic or biogenic gas has led to the formation of pockmarks; erosion by bottom currents has resulted in the formation of moats around seamounts and erosion of the seafloor of the Alborán Ridge and kept the southern edge of the 36°10′N high sediment free.Sí202320232008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/319937reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSede Central IEOhttps://www.sciencedirect.com/science/article/pii/S026481720700061Xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3199372026-05-22T06:33:51Z
dc.title.none.fl_str_mv Alborán basin, southern Spain. Part I: Geomorphology
title Alborán basin, southern Spain. Part I: Geomorphology
spellingShingle Alborán basin, southern Spain. Part I: Geomorphology
Pereiro-Muñoz, José Antonio
Sede Central IEO
Medio Marino
title_short Alborán basin, southern Spain. Part I: Geomorphology
title_full Alborán basin, southern Spain. Part I: Geomorphology
title_fullStr Alborán basin, southern Spain. Part I: Geomorphology
title_full_unstemmed Alborán basin, southern Spain. Part I: Geomorphology
title_sort Alborán basin, southern Spain. Part I: Geomorphology
dc.creator.none.fl_str_mv Pereiro-Muñoz, José Antonio
Gómez-Ballesteros, María
Montoya, I.
Rivera, Jesús
Acosta-Yepes, Juan
Uchupi, E.
author Pereiro-Muñoz, José Antonio
author_facet Pereiro-Muñoz, José Antonio
Gómez-Ballesteros, María
Montoya, I.
Rivera, Jesús
Acosta-Yepes, Juan
Uchupi, E.
author_role author
author2 Gómez-Ballesteros, María
Montoya, I.
Rivera, Jesús
Acosta-Yepes, Juan
Uchupi, E.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Sede Central IEO
Medio Marino
topic Sede Central IEO
Medio Marino
description Bathymetric, 3D relief and shaded relief maps created from multibeam echo-sounding data image the morphology of the Alborán Basin, a structural low along the east–west-trending Eurasian–African plates boundary. Topographic features in the basin are the consequence of volcanism associated with Miocene rifting, rift and post-rift sedimentation, and recent faulting resulting from the convergence of the African–Eurasian plates. Pleistiocene glacially induced regressions/transgressions when the sea level dropped to about 150 m below its present level gas seeps and bottom currents. Recent faulting and the Pleistocene transgressions/regressions led to mass-wasting, formation of turbidity currents and canyon erosion on the basin's slopes. Recent fault traces at the base of the northern basin slope have also served as passageways for thermogenic methane, the oxidation of which by bacteria led to the formation of carbonate mounds along the fault intercepts on the sea floor. Expulsion of thermogenic or biogenic gas has led to the formation of pockmarks; erosion by bottom currents has resulted in the formation of moats around seamounts and erosion of the seafloor of the Alborán Ridge and kept the southern edge of the 36°10′N high sediment free.
publishDate 2008
dc.date.none.fl_str_mv 2008
2023
2023
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/10261/319937
url http://hdl.handle.net/10261/319937
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sede Central IEO
https://www.sciencedirect.com/science/article/pii/S026481720700061X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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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score 15,81155

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