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

2019-11-27Journal article Restricted access
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dc.contributor.authorSilva, Pedro
dc.contributor.authorRoque, C.
dc.contributor.authorDrago, Teresa
dc.contributor.authorBelen, A.
dc.contributor.authorErcilla, Gemma
dc.contributor.authorLopes, Ana
dc.contributor.authorLopez-Gonzalez, Nieves
dc.contributor.authorCASAS, DAVID
dc.contributor.authorNaughton, F.
dc.contributor.authorVazquez, Juan-Tomas
dc.contributor.authorHenry, B.
dc.date.accessioned2019-12-12T14:24:52Z
dc.date.available2019-12-12T14:24:52Z
dc.date.issued2019-11-27
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 Portimão 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 Portimão 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 Portimão 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.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSILVA, Pedro Fernandes; [et al] – Multidisciplinary characterization of Quaternary mass movement deposits in the Portimão Bank (Gulf of Cadiz, SW Iberia). Marine Geology. ISSN 0025-3227. Vol. 420 (2019), pp. 1-64pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.margeo.2019.106086pt_PT
dc.identifier.issn0025-3227
dc.identifier.urihttp://hdl.handle.net/10400.21/10848
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCTM-14157-C02-02-MAR - MONTERA project (Spanish Science Foundation)pt_PT
dc.relation.publisherversionhttps://pdf.sciencedirectassets.com/271781/AIP/1-s2.0-S0025322719302725/main.pdf?X-Amz-Date=20191212T140545Z&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Signature=f9eed1e3f7f6eb8fb0182e14f763170b77ba5c46a2b61407dfb39753bb2c5ffd&X-Amz-Credential=ASIAQ3PHCVTYVKCZXMHZ%2F20191212%2Fus-east-1%2Fs3%2Faws4_request&type=client&tid=prr-edf9ae46-cf04-4187-b249-a1e0f535abe4&sid=e0e1f8ca3653084db57a7198eb486f4113fagxrqb&pii=S0025322719302725&X-Amz-SignedHeaders=host&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEL3%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCXVzLWVhc3QtMSJHMEUCIQCamgRz8EgW0iDXzqkOBB6CTli8iPdCIubCPZ0urcPKngIgCEHPfik4jjUBplCrZr9gCt1oseWPqxkRTFfwjod%2BTJAqzwIIFRACGgwwNTkwMDM1NDY4NjUiDNNEbxmGMD2mZkAF6SqsAvG6%2F6Z%2FVWSL2u968oxyXp2Xj5GJM530x6VmD7mh7iWWB42ibrIdIZtd231PEb68h0hFtssYYKpIZjzs%2FdzPOFd67WNqzfF%2B%2BeT3qL0yyllf2uugJPosihr9F%2BX0OxxaOc0fl7Q5cfhPYtsbi0S3sMvZs9wc5jFdKiVyDKQTxyrn%2FNrIqcp%2FIlmXhIrPJnz30m8N5AuCWcjhn7LuFT2grUfJgDu19Ga9HX%2Fe1Xk8UZy4y0%2FJCLGO7kRftjAXFpOKP0MYEQ4OiBFdoTljk1rDR0hATCs4G0ijVny3PpveyoVcNSXoEmWeHz16U%2BCUz0iVeUzejV8NoNa98yOTtENUqlKa1bRYU7LB3g5T5HW%2FZw%2Fb6FoPkzkmQL813vjwx4Bo1dgePvB%2Bqawf55k2pTD83MjvBTrQAndcUvlCQYTJj3L%2Fg1hmYBX1D%2BnB4PyU4%2FpUDtt4hG452%2F0cBR8Syd8RFMk0ISAlUDQCMPSoA8vf7PCl9wmopsQ4ezE1ByJDE%2FP%2Fbr5hMAlI%2F1gQkOo3TQZttj8jg1qQpPgBpwz%2F5EvRMZFg8jC6qluNJmcrrBhuS7Rx6H%2BRs5PwBhPnzsAU3d3CdtUJx%2FVbjCsEI4WiPTewUhE5wg1svoXbL1TMErG2P7AKguz6u0f3RvEvlAkGItXf0MRekBshv8qWA%2BN2tHTteGG4gXVdAbq7kfGNRFv%2ByocExoY4X23p0qZ%2B%2FS33jmz0kUEGNFJuX5nBGYL4lUaOaZgrSIumPm4BqadRBn%2BrzE3t27xDu%2BuPkYO4BFiCWg4vd9yxaY%2BFNsrTi9Xm%2FN37W2dAdXZzwcMo3tA9UMtrGPGUT95LaQLizIF6Ek%2FPHNv9UVgFpOrceA%3D%3D&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&X-Amz-Expires=300&hash=7a1e4afcfb9faf46afb165f6d439c38c880e4f4eb2826a6287bb4f1457cae699pt_PT
dc.subjectMass movement depositspt_PT
dc.subjectBathymetric and seismic profilespt_PT
dc.subjectPiston core analysespt_PT
dc.subjectMagnetic fabricpt_PT
dc.subjectDeformed sedimentspt_PT
dc.titleMultidisciplinary characterization of Quaternary mass movement deposits in the Portimão Bank (Gulf of Cadiz, SW Iberia)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage64pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleMarine Geologypt_PT
oaire.citation.volume420
person.familyNameSilva
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person.familyNameLopes
person.familyNameLopez-Gonzalez
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person.givenNameJuan-Tomas
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person.identifierFilipa Naughton
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person.identifier.orcid0000-0002-3747-4838
person.identifier.ridB-8512-2008
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rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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