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dc.contributor.author
de la Parra, Felipe
dc.contributor.author
Pinzón Aceros, Diego Alberto
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dc.contributor.author
Rodriguez, Guillermo
dc.contributor.author
Bedoya, Omar
dc.contributor.author
Benson, Roger
dc.date.available
2023-09-04T12:41:38Z
dc.date.issued
2019-10
dc.identifier.citation
de la Parra, Felipe; Pinzón Aceros, Diego Alberto; Rodriguez, Guillermo; Bedoya, Omar; Benson, Roger; Lacustrine systems in the early Miocene of northern South America—Evidence from the Upper Magdalena Valley, Colombia; Society for Sedimentary Geology; Palaios; 34; 10; 10-2019; 490-505
dc.identifier.issn
0883-1351
dc.identifier.uri
http://hdl.handle.net/11336/210332
dc.description.abstract
Extensive areas covered by semi-permanent water bodies were common during the Miocene in the Neotropics. These floods are noteworthy because of their possible role in promoting the high biological diversity observed today in the Amazonia. In particular, a relatively good understanding of the floods has been achieved for the Llanos basin of Colombia and western Amazonia. In these two basins the evidence suggests episodes of marine incursions and development of lacustrine systems at different times during the Miocene. Other intra-montane basins in Colombia, like the Middle and Upper Magdalena basins, also show clear evidence that water bodies covered them during that time. However, the chronostratigraphy and paleoecology of these deposits are still unclear. In this study, we use the palynological record of the Middle and Upper Magdalena valleys to establish the age of the deposits of the Barzalosa Formation, a unit that preserves a detailed record of a lacustrine system deposited during the late early Miocene in the Upper Magdalena Valley. The results indicate that the Barzalosa Formation is correlative with the lacustrine deposits of the La Cira fossiliferous horizon in the Middle Magdalena Valley. This indicates that extensive lacustrine systems covered the intramontane basins of the northern Andes during the early Miocene. Paleoecologically, the Barzalosa Formation is the result of the evolution of a lacustrine system in three phases, which show marked differences in the proportion of algae, palynological composition and sedimentary depositional sequence. Climate and tectonic processes were the most probable mechanisms controlling the evolution of the Barzalosa system.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society for Sedimentary Geology
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Lacustrine systems
dc.subject
Palynology
dc.subject
Northern South America
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Lacustrine systems in the early Miocene of northern South America—Evidence from the Upper Magdalena Valley, Colombia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-08-28T13:26:55Z
dc.journal.volume
34
dc.journal.number
10
dc.journal.pagination
490-505
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: de la Parra, Felipe. University of Oxford; Reino Unido
dc.description.fil
Fil: Pinzón Aceros, Diego Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Rodriguez, Guillermo. No especifíca;
dc.description.fil
Fil: Bedoya, Omar. No especifíca;
dc.description.fil
Fil: Benson, Roger. University of Oxford; Reino Unido
dc.journal.title
Palaios
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.2110/palo.2019.025
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