Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic

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dc.citation.journalTitleJournal Of South American Earth Sciences
dc.contributor.authorMolinares, C. E.spa
dc.contributor.authorMartinez, J. I.spa
dc.contributor.authorFiorini, F.spa
dc.contributor.authorEscobar, J.spa
dc.contributor.authorJaramillo, C.spa
dc.contributor.departmentUniversidad EAFIT. Departamento de Geologíaspa
dc.contributor.researchgroupCiencias del Marspa
dc.date.accessioned2021-03-23T20:20:23Z
dc.date.available2021-03-23T20:20:23Z
dc.date.issued2012-11-01
dc.description.abstractThe Magdalena river transports one of the largest load of sediments per basin area in the world. Its delta position has changed several times over the Neogene. The Arroyo Piedras Section (169 m) in northern Colombia, contains part of the record of the Late Miocene to Early Pliocene evolution of the Magdalena paleodelta. The section was described and sampled for sedimentological and micropaleontological analyses. Based on lithofacies and benthic foraminifera content, the section was divided in three segments, and the upper segment was dated as Early Pliocene using planktonic foraminifera. The lower segment suggests siliciclastic sedimentation in a proximal prodelta/delta plain transitional environment. The intermediate segment suggests sedimentation in a lagoon and/or coastal swamp environment, whereas the upper segment is interpreted as the result of a transgression and subsequent deposition at the foreshore/upper shoreface environment, with a considerable decrease of terrigenous input. The decrease of sediment delivery to the delta produced by permanent El Niño-like conditions coupled with autocyclic processes could explain the transgressive pattern observed in the Arroyo de Piedras section during the Early Pliocene. © 2012 Elsevier Ltd.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1340
dc.identifier.doi10.1016/j.jsames.2012.04.007
dc.identifier.issn08959811
dc.identifier.issn18730647
dc.identifier.otherWOS;000310107400013
dc.identifier.otherSCOPUS;2-s2.0-84866511723
dc.identifier.urihttp://hdl.handle.net/10784/26871
dc.language.isoengeng
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84866511723&doi=10.1016%2fj.jsames.2012.04.007&partnerID=40&md5=9e4c19d936aa03854c7d7031fd95ca98
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0895-9811
dc.sourceJournal Of South American Earth Sciences
dc.subject.keywordbenthic foraminiferaeng
dc.subject.keywordlagooneng
dc.subject.keywordlithofacieseng
dc.subject.keywordNeogeneeng
dc.subject.keywordpaleoclimateeng
dc.subject.keywordpaleoenvironmenteng
dc.subject.keywordPlioceneeng
dc.subject.keywordsediment transporteng
dc.subject.keywordsedimentologyeng
dc.subject.keywordColombiaeng
dc.subject.keywordMagdalena Rivereng
dc.subject.keywordForaminiferaeng
dc.titlePaleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamiceng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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