The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia

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dc.citation.journalTitlePalaios
dc.contributor.authorMartinez, JIspa
dc.contributor.departmentUniversidad EAFIT. Departamento de Geologíaspa
dc.contributor.researchgroupCiencias del Marspa
dc.date.accessioned2021-03-23T20:20:24Z
dc.date.available2021-03-23T20:20:24Z
dc.date.issued2003-10-01
dc.description.abstractTen planktonic foraminiferal zones are identified and six stratigraphic sequences are interpreted in the Turonian-Maastrichtian interval of the Michu-1 well in the Upper Magdalena Basin. Anoxic bottom-water conditions prevailed during the Turonian and Coniacian followed by dysoxic conditions in the Santonian and Campanian. Oxic conditions were established during the Maastrichtian age. Upwelling occurred for most of the Late Cretaceous. Coccolithophorids, planktonic foraminifera, radialaria, ammonites, clupeoid fish, and mosasaurs dominated the food-web structure of the Turonian-Coniacian interval. Following a major turnover during the Coniacian-Santonian boundary interval, dinoflagellates were the primary producers that sustained radiolarians, a sparse population of planktonic foraminifera, clupeoid fish, and ammonites. Dinaflagellate blooms (peridinoids) were frequent during the Campanian interval and sustained a sparse population of planktonic foraminifera and abundant clupeoid fish whose feces (phosphatic pellets) were grazed extensively by a specialized population of buliminids dominated by the genus Siphogenerinoides.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1493
dc.identifier.doi10.1669/0883-1351(2003)018<0305:TPOLCU>2.0.CO;2
dc.identifier.issn08831351
dc.identifier.otherWOS;000186081900003
dc.identifier.otherSCOPUS;2-s2.0-0345604392
dc.identifier.urihttp://hdl.handle.net/10784/26881
dc.language.isoengeng
dc.publisherSEPM-SOC SEDIMENTARY GEOLOGY
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0345604392&doi=10.1669%2f0883-1351%282003%29018%3c0305%3aTPOLCU%3e2.0.CO%3b2&partnerID=40&md5=e755aeb16e7a3a19c10e19533b8538e2
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0883-1351
dc.sourcePalaios
dc.subject.keywordbiostratigraphyeng
dc.subject.keywordCretaceouseng
dc.subject.keywordorganic carboneng
dc.subject.keywordpaleoceanographyeng
dc.subject.keywordpaleoecologyeng
dc.subject.keywordplanktonic foraminiferaeng
dc.subject.keywordsequence stratigraphyeng
dc.subject.keywordupwellingeng
dc.subject.keywordColombiaeng
dc.subject.keywordClupeiformeseng
dc.subject.keywordDinophyceaeeng
dc.subject.keywordForaminiferaeng
dc.subject.keywordHaptophyceaeeng
dc.subject.keywordRadiolaria (protozoans)eng
dc.titleThe paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombiaeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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