Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic
The 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...
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Language: | English |
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Online Access: | http://hdl.handle.net/10784/26871 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1340 https://doi.org/10.1016/j.jsames.2012.04.007 |
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ftuniveafit:oai:repository.eafit.edu.co:10784/26871 2023-05-15T18:00:55+02:00 Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic Molinares, C. E. Martinez, J. I. Fiorini, F. Escobar, J. Jaramillo, C. Universidad EAFIT. Departamento de Geología Ciencias del Mar 2012-11-01 application/pdf http://hdl.handle.net/10784/26871 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1340 https://doi.org/10.1016/j.jsames.2012.04.007 eng eng PERGAMON-ELSEVIER SCIENCE LTD https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866511723&doi=10.1016%2fj.jsames.2012.04.007&partnerID=40&md5=9e4c19d936aa03854c7d7031fd95ca98 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1340 08959811 18730647 WOS;000310107400013 SCOPUS;2-s2.0-84866511723 http://hdl.handle.net/10784/26871 doi:10.1016/j.jsames.2012.04.007 https://v2.sherpa.ac.uk/id/publication/issn/0895-9811 Journal Of South American Earth Sciences benthic foraminifera lagoon lithofacies Neogene paleoclimate paleoenvironment Pliocene sediment transport sedimentology Colombia Magdalena River Foraminifera info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion publishedVersion Artículo 2012 ftuniveafit https://doi.org/10.1016/j.jsames.2012.04.007 2022-09-18T00:00:39Z The 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. Article in Journal/Newspaper Planktonic foraminifera Universidad EAFIT, Medellin: Repositorio Institucional Piedras ENVELOPE(-62.933,-62.933,-64.900,-64.900) Journal of South American Earth Sciences 39 170 183 |
institution |
Open Polar |
collection |
Universidad EAFIT, Medellin: Repositorio Institucional |
op_collection_id |
ftuniveafit |
language |
English |
topic |
benthic foraminifera lagoon lithofacies Neogene paleoclimate paleoenvironment Pliocene sediment transport sedimentology Colombia Magdalena River Foraminifera |
spellingShingle |
benthic foraminifera lagoon lithofacies Neogene paleoclimate paleoenvironment Pliocene sediment transport sedimentology Colombia Magdalena River Foraminifera Molinares, C. E. Martinez, J. I. Fiorini, F. Escobar, J. Jaramillo, C. Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic |
topic_facet |
benthic foraminifera lagoon lithofacies Neogene paleoclimate paleoenvironment Pliocene sediment transport sedimentology Colombia Magdalena River Foraminifera |
description |
The 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. |
author2 |
Universidad EAFIT. Departamento de Geología Ciencias del Mar |
format |
Article in Journal/Newspaper |
author |
Molinares, C. E. Martinez, J. I. Fiorini, F. Escobar, J. Jaramillo, C. |
author_facet |
Molinares, C. E. Martinez, J. I. Fiorini, F. Escobar, J. Jaramillo, C. |
author_sort |
Molinares, C. E. |
title |
Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic |
title_short |
Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic |
title_full |
Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic |
title_fullStr |
Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic |
title_full_unstemmed |
Paleoenvironmental reconstruction for the lower Pliocene Arroyo Piedras section (Tubará - Colombia): Implications for the Magdalena River - paleodelta's dynamic |
title_sort |
paleoenvironmental reconstruction for the lower pliocene arroyo piedras section (tubará - colombia): implications for the magdalena river - paleodelta's dynamic |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2012 |
url |
http://hdl.handle.net/10784/26871 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1340 https://doi.org/10.1016/j.jsames.2012.04.007 |
long_lat |
ENVELOPE(-62.933,-62.933,-64.900,-64.900) |
geographic |
Piedras |
geographic_facet |
Piedras |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Journal Of South American Earth Sciences |
op_relation |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866511723&doi=10.1016%2fj.jsames.2012.04.007&partnerID=40&md5=9e4c19d936aa03854c7d7031fd95ca98 https://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1340 08959811 18730647 WOS;000310107400013 SCOPUS;2-s2.0-84866511723 http://hdl.handle.net/10784/26871 doi:10.1016/j.jsames.2012.04.007 |
op_rights |
https://v2.sherpa.ac.uk/id/publication/issn/0895-9811 |
op_doi |
https://doi.org/10.1016/j.jsames.2012.04.007 |
container_title |
Journal of South American Earth Sciences |
container_volume |
39 |
container_start_page |
170 |
op_container_end_page |
183 |
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1766170196927578112 |