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Multidisciplinary characterization of Quaternary mass movement deposits in the Portimao Bank (Gulf of Cadiz, SW Iberia)

2020-02Journal article Restricted access
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dc.contributor.authorSilva, P. F.
dc.contributor.authorRoque, C.
dc.contributor.authorDrago, T.
dc.contributor.authorBelen, A.
dc.contributor.authorHenry, B.
dc.contributor.authorGemma, E.
dc.contributor.authorLopes, Ana
dc.contributor.authorLopez-Gonzalez, N.
dc.contributor.authorCasas, D.
dc.contributor.authorNaughton, F.
dc.contributor.authorNaughton, F.
dc.date.accessioned2021-06-24T11:35:59Z
dc.date.available2021-06-24T11:35:59Z
dc.date.issued2020-02
dc.description.abstractWe present a multidisciplinary study of the seismic stratigraphy, sedimentology, geochemistry and magnetism to characterize the Quaternary mass movement deposits (MMD) and the associated deformation in the Portimao Bank (Gulf of Cadiz, offshore SW Iberia). Two scales of approach have been applied. At large-scale (m to km) approach, were recognized and characterized a series of important and subsequent slide scars (tens of meters high) and MMD (the larger one with 10 km length) related to landslides, more prominent at Portimao Bank's southern flank. At small-scale (cm) approach, we point out on a piston core collected within a scar affected by MMD, a replication of the sedimentary column as evidenced by geochronological results and corroborated by sedimentology, geochemistry and magnetic data. Magnetic fabric data enabled the identification and characterization of the internal structure and deformation of MMD along the sedimentary column. For last, geochronology and the morphology of Portimao seamount are discussed in order to constraint the factors controlling MMD triggering. The multidisciplinary approach is useful in a better characterization of the MMD at different scales and improved the understanding of its dynamics.
dc.description.sponsorshipMONTERA project by Ministerio de Ciencia e Innovacion [CTM2009-14157-C02]
dc.description.sponsorshipFAUCES project by Ministerio de Economia y Competitividad [CTM2015-65461-C2-R]
dc.description.sponsorshipFEDEREuropean Commission
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.margeo.2019.106086
dc.identifier.issn0025-3227
dc.identifier.urihttp://hdl.handle.net/10400.1/16592
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMass movement deposits
dc.subjectBathymetric and seismic profiles
dc.subjectPiston core analyses
dc.subjectMagnetic fabric
dc.subjectDeformed sediments
dc.titleMultidisciplinary characterization of Quaternary mass movement deposits in the Portimao Bank (Gulf of Cadiz, SW Iberia)
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage106086
oaire.citation.titleMarine Geology
oaire.citation.volume420
person.familyNameLopes
person.familyNameNaughton
person.givenNameAna
person.givenNameFilipa
person.identifierR-000-JPJ
person.identifier.ciencia-id9E17-B774-BA21
person.identifier.ciencia-id1419-F239-1CEA
person.identifier.orcid0000-0002-1069-4451
person.identifier.orcid0000-0002-3055-9396
person.identifier.ridE-7659-2013
person.identifier.scopus-author-id23009659300
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationafdb3040-f14a-4bde-8cbc-16d3ad9394ee
relation.isAuthorOfPublication53f17112-41aa-4bd9-a437-50736dbde6f9
relation.isAuthorOfPublication.latestForDiscovery53f17112-41aa-4bd9-a437-50736dbde6f9

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