The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia
Ten 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...
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SEPM-SOC SEDIMENTARY GEOLOGY
2003
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ftuniveafit:oai:repository.eafit.edu.co:10784/26881 2023-05-15T18:00:12+02:00 The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia Martinez, JI Universidad EAFIT. Departamento de Geología Ciencias del Mar 2003-10-01 http://hdl.handle.net/10784/26881 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1493 eng eng SEPM-SOC SEDIMENTARY GEOLOGY https://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 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1493 08831351 WOS;000186081900003 SCOPUS;2-s2.0-0345604392 http://hdl.handle.net/10784/26881 10.1669/0883-1351(2003)018<0305:TPOLCU>2.0.CO;2 https://v2.sherpa.ac.uk/id/publication/issn/0883-1351 Palaios biostratigraphy Cretaceous organic carbon paleoceanography paleoecology planktonic foraminifera sequence stratigraphy upwelling Colombia Clupeiformes Dinophyceae Foraminifera Haptophyceae Radiolaria (protozoans) info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion publishedVersion Artículo 2003 ftuniveafit 2022-03-07T07:56:15Z Ten 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. Article in Journal/Newspaper Planktonic foraminifera Universidad EAFIT, Medellin: Repositorio Institucional |
institution |
Open Polar |
collection |
Universidad EAFIT, Medellin: Repositorio Institucional |
op_collection_id |
ftuniveafit |
language |
English |
topic |
biostratigraphy Cretaceous organic carbon paleoceanography paleoecology planktonic foraminifera sequence stratigraphy upwelling Colombia Clupeiformes Dinophyceae Foraminifera Haptophyceae Radiolaria (protozoans) |
spellingShingle |
biostratigraphy Cretaceous organic carbon paleoceanography paleoecology planktonic foraminifera sequence stratigraphy upwelling Colombia Clupeiformes Dinophyceae Foraminifera Haptophyceae Radiolaria (protozoans) Martinez, JI The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia |
topic_facet |
biostratigraphy Cretaceous organic carbon paleoceanography paleoecology planktonic foraminifera sequence stratigraphy upwelling Colombia Clupeiformes Dinophyceae Foraminifera Haptophyceae Radiolaria (protozoans) |
description |
Ten 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. |
author2 |
Universidad EAFIT. Departamento de Geología Ciencias del Mar |
format |
Article in Journal/Newspaper |
author |
Martinez, JI |
author_facet |
Martinez, JI |
author_sort |
Martinez, JI |
title |
The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia |
title_short |
The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia |
title_full |
The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia |
title_fullStr |
The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia |
title_full_unstemmed |
The paleoecology of Late Cretaceous upwelling events from the upper Magdalena basin, Colombia |
title_sort |
paleoecology of late cretaceous upwelling events from the upper magdalena basin, colombia |
publisher |
SEPM-SOC SEDIMENTARY GEOLOGY |
publishDate |
2003 |
url |
http://hdl.handle.net/10784/26881 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1493 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Palaios |
op_relation |
https://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 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1493 08831351 WOS;000186081900003 SCOPUS;2-s2.0-0345604392 http://hdl.handle.net/10784/26881 10.1669/0883-1351(2003)018<0305:TPOLCU>2.0.CO;2 |
op_rights |
https://v2.sherpa.ac.uk/id/publication/issn/0883-1351 |
_version_ |
1766169206136504320 |