Very coarse-grained beaches as a response to generalized sea level drops in a complex active tectonic setting: Pleistocene marine terraces at the Cadiz coast, SW Spain

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dc.contributor.authorGonzález Acebrón, Laura
dc.contributor.authorMas Mayoral, José Ramón
dc.contributor.authorArribas Mocoroa, José
dc.contributor.authorGutiérrez Mas, José Manuel
dc.contributor.authorPérez Garrido, Carlos
dc.date.accessioned2023-06-18T05:58:02Z
dc.date.available2023-06-18T05:58:02Z
dc.date.issued2016
dc.description.abstractThe studied Pleistocene deposits at the Cadiz coast are located on the current intertidal zone or at cliffs parallel to the actual coast (6.50 m a.s.l.) from the localities of El Puerto de Santa María to Chiclana. Five sequences of very coarse-grained beaches have been recognized and dated. They unconformably overlie Pliocene units and are formed by clast-supported conglomerate and coarse-grained sandstone. Chronological ages (⁸⁷Sr/⁸⁶Sr and AMS ¹⁴C analysis) and stratigraphic correlation stand that the oldest marine terrace is the one placed topographically higher and towards the SE of Cadiz city, dated as Early Pleistocene (1.3 Ma). After it, the sea retreatment produces subaerial exposure of Sequence 1 and the development of several calcrete profiles and a paleokarst. Subsequent sea-level rises allow the sedimentation of Sequences 2, 3 and 4 during Early-Middle Pleistocene (1 to 0.8 Ma) in areas close to Cadiz city, with subaerial exposure recorded at the top of Sequences 3 and 4. During the very Upper Pleistocene, sedimentation of Sequence 5 occurs towards the SE of Cadiz city. Based on the spatial position of Sequence 5 we can conclude that this area constituted a downthrown block during the Latest Pleistocene, in relation to neotectonic processes and diapirism
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/57479
dc.identifier.doi10.1016/j.margeo.2016.09.007
dc.identifier.issn0025-3227
dc.identifier.officialurlhttps://www.sciencedirect.com/journal/marine-geology/vol/382/suppl/C
dc.identifier.relatedurlhttp://www.elsevier.com/locate/margo
dc.identifier.urihttps://hdl.handle.net/20.500.14352/23670
dc.journal.titleMarine Geology
dc.language.isoeng
dc.page.final110
dc.page.initial92
dc.publisherElsevier
dc.relation.projectIDCGL2010-16878
dc.rights.accessRightsrestricted access
dc.subject.cdu551.7
dc.subject.keywordPleistocene
dc.subject.keywordCadiz coast
dc.subject.keywordCoarse-grained beaches
dc.subject.keywordProvenance
dc.subject.keywordDiagenesis
dc.subject.keywordMarine terraces arrangement
dc.subject.ucmGeología estratigráfica
dc.subject.unesco2506.19 Estratigrafía
dc.titleVery coarse-grained beaches as a response to generalized sea level drops in a complex active tectonic setting: Pleistocene marine terraces at the Cadiz coast, SW Spain
dc.typejournal article
dc.volume.number382
dspace.entity.typePublication
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relation.isAuthorOfPublicationc6a33f32-53b8-4e29-93e8-94d356b58a19
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relation.isAuthorOfPublication.latestForDiscovery2fb1dff4-b4f0-4016-be4d-86ea407ff58c
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