Geological framework of the pacific coast sedimentary basins, western colombia

The Pacific Coastal Province comprises the Tumaco, San Juan, Atrato and Urabá Basins. Althoughthese basins are laterally contiguous and related to an active margin (convergence of Nazcaand South America Plates) each one is characterized by a distinctive geological framework. The comparativeregional...

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Autores:
Suárez Rodríguez, Mario A.
Tipo de recurso:
Article of journal
Fecha de publicación:
2007
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/42397
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/42397
http://bdigital.unal.edu.co/32494/
Palabra clave:
Geociencias
Estratigrafía
Back-arc basin
convergent margin
fore-arc basin
inter-arc basin
pull apart
second order sequence.
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openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_eb3ca5555fbda75602f9092e34a44dc8
oai_identifier_str oai:repositorio.unal.edu.co:unal/42397
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Geological framework of the pacific coast sedimentary basins, western colombia
title Geological framework of the pacific coast sedimentary basins, western colombia
spellingShingle Geological framework of the pacific coast sedimentary basins, western colombia
Geociencias
Estratigrafía
Back-arc basin
convergent margin
fore-arc basin
inter-arc basin
pull apart
second order sequence.
title_short Geological framework of the pacific coast sedimentary basins, western colombia
title_full Geological framework of the pacific coast sedimentary basins, western colombia
title_fullStr Geological framework of the pacific coast sedimentary basins, western colombia
title_full_unstemmed Geological framework of the pacific coast sedimentary basins, western colombia
title_sort Geological framework of the pacific coast sedimentary basins, western colombia
dc.creator.fl_str_mv Suárez Rodríguez, Mario A.
dc.contributor.author.spa.fl_str_mv Suárez Rodríguez, Mario A.
dc.subject.proposal.spa.fl_str_mv Geociencias
Estratigrafía
Back-arc basin
convergent margin
fore-arc basin
inter-arc basin
pull apart
second order sequence.
topic Geociencias
Estratigrafía
Back-arc basin
convergent margin
fore-arc basin
inter-arc basin
pull apart
second order sequence.
description The Pacific Coastal Province comprises the Tumaco, San Juan, Atrato and Urabá Basins. Althoughthese basins are laterally contiguous and related to an active margin (convergence of Nazcaand South America Plates) each one is characterized by a distinctive geological framework. The comparativeregional stratigraphic and structural setting of these active basins as well as their petroleumpotential is presented here using 2000 km of 2D seismic profile and information from fifteen exploratorywells. Due to the lack of biostratigraphic control within these basins, only second order sequenceswere recognized based mainly on seismic information.The Tumaco Basin is a forearc basin that comprises four second order sequences, one pre-Mioceneand three post-lower Miocene, which were deposited in deep marine environments. The base ofthe Sequence B (lower Miocene) and C (upper Miocene) were deposited in submarine fan systemsproviding turbiditic coarse clastics. The sequence A (pre-Miocene sequence) could have a thick potentialsource section of shale.The San Juan Basin represents a pull-apart basin comprising rocks from Paleocene to Quaternary,deposited mainly in deep marine environments as well as in neritic environments. The Sierra(Oligocene), Conglomerado La Mojarra (lower Miocene) and Munguidó (upper Miocene) Formations,could provide potential clastic reservoirs). In the Iró Formation also occurs competent rocks (chertsand limestones) highly fractured that represents potential fractured reservoirs. The shaly section of theIró Formation is a potential source rock in the basin.The Atrato basin is an interarc, which comprises by five second order sequences depositedmainly in deep marine environments from Late Cretaceous to Quaternary. The base of the C and Dsequences (Oligocene and middle Miocene respectively) were possibly deposited in submarine fansystems. These levels could provide sandstones and conglomerates as potential reservoirs. Sourcepotential rocks could occur in sequence A (upper Cretaceous-lower Miocene) and sequence B (lowerEocene-Oligocene).The Urabá Basin represents a backarc basin which contains five second order sequences, probablydeposited from Late Cretaceous to Quaternary, mainly in marine to transitional environments.There are three levels with coarse clastic facies. These three levels are in the upper part of theSequence B (Oligocene), in the Sequence C (Oligocene-middle Miocene) and in the Sequence D(Middle Miocene-Pliocene?), which have coarser facies toward the southwest. The Sequences A (upperCretaceous?-Eocene) and B (Eocene) contain pelitic facies in the depocenter of the basin thatcould be potential source rocks.The present study is a preliminar evaluation of the regional geology of the sedimentary basins ofthe Pacific Coast Province. This evaluation provides new ideas about the different geologic featuresof basins developed in a same tectonic setting (convergent margin) and the implications for petroleumpotential. The different characteristics of these basins could be related to differential local rate ofsubduction, different angle of the Benniof zone, transcurrent faults, etc. factors beyond the scope ofthis paper.
publishDate 2007
dc.date.issued.spa.fl_str_mv 2007
dc.date.accessioned.spa.fl_str_mv 2019-06-28T10:47:30Z
dc.date.available.spa.fl_str_mv 2019-06-28T10:47:30Z
dc.type.spa.fl_str_mv Artículo de revista
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url https://repositorio.unal.edu.co/handle/unal/42397
http://bdigital.unal.edu.co/32494/
dc.language.iso.spa.fl_str_mv spa
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dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/geocol/article/view/32023
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Geología Colombiana
Geología Colombiana
dc.relation.ispartofseries.none.fl_str_mv Geología Colombiana - An International Journal on Geosciences; Vol. 32 (2007); 47-62 Geología Colombiana; Vol. 32 (2007); 47-62 2357-3767 0072-0992
dc.relation.references.spa.fl_str_mv Suárez Rodríguez, Mario A. (2007) Geological framework of the pacific coast sedimentary basins, western colombia. Geología Colombiana - An International Journal on Geosciences; Vol. 32 (2007); 47-62 Geología Colombiana; Vol. 32 (2007); 47-62 2357-3767 0072-0992 .
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
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dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
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http://creativecommons.org/licenses/by-nc/4.0/
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eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Departamento de Geociencias
institution Universidad Nacional de Colombia
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Suárez Rodríguez, Mario A.021548d7-6cd7-48ca-9c78-43374f90ede43002019-06-28T10:47:30Z2019-06-28T10:47:30Z2007https://repositorio.unal.edu.co/handle/unal/42397http://bdigital.unal.edu.co/32494/The Pacific Coastal Province comprises the Tumaco, San Juan, Atrato and Urabá Basins. Althoughthese basins are laterally contiguous and related to an active margin (convergence of Nazcaand South America Plates) each one is characterized by a distinctive geological framework. The comparativeregional stratigraphic and structural setting of these active basins as well as their petroleumpotential is presented here using 2000 km of 2D seismic profile and information from fifteen exploratorywells. Due to the lack of biostratigraphic control within these basins, only second order sequenceswere recognized based mainly on seismic information.The Tumaco Basin is a forearc basin that comprises four second order sequences, one pre-Mioceneand three post-lower Miocene, which were deposited in deep marine environments. The base ofthe Sequence B (lower Miocene) and C (upper Miocene) were deposited in submarine fan systemsproviding turbiditic coarse clastics. The sequence A (pre-Miocene sequence) could have a thick potentialsource section of shale.The San Juan Basin represents a pull-apart basin comprising rocks from Paleocene to Quaternary,deposited mainly in deep marine environments as well as in neritic environments. The Sierra(Oligocene), Conglomerado La Mojarra (lower Miocene) and Munguidó (upper Miocene) Formations,could provide potential clastic reservoirs). In the Iró Formation also occurs competent rocks (chertsand limestones) highly fractured that represents potential fractured reservoirs. The shaly section of theIró Formation is a potential source rock in the basin.The Atrato basin is an interarc, which comprises by five second order sequences depositedmainly in deep marine environments from Late Cretaceous to Quaternary. The base of the C and Dsequences (Oligocene and middle Miocene respectively) were possibly deposited in submarine fansystems. These levels could provide sandstones and conglomerates as potential reservoirs. Sourcepotential rocks could occur in sequence A (upper Cretaceous-lower Miocene) and sequence B (lowerEocene-Oligocene).The Urabá Basin represents a backarc basin which contains five second order sequences, probablydeposited from Late Cretaceous to Quaternary, mainly in marine to transitional environments.There are three levels with coarse clastic facies. These three levels are in the upper part of theSequence B (Oligocene), in the Sequence C (Oligocene-middle Miocene) and in the Sequence D(Middle Miocene-Pliocene?), which have coarser facies toward the southwest. The Sequences A (upperCretaceous?-Eocene) and B (Eocene) contain pelitic facies in the depocenter of the basin thatcould be potential source rocks.The present study is a preliminar evaluation of the regional geology of the sedimentary basins ofthe Pacific Coast Province. This evaluation provides new ideas about the different geologic featuresof basins developed in a same tectonic setting (convergent margin) and the implications for petroleumpotential. The different characteristics of these basins could be related to differential local rate ofsubduction, different angle of the Benniof zone, transcurrent faults, etc. factors beyond the scope ofthis paper.application/pdfspaDepartamento de Geocienciashttp://revistas.unal.edu.co/index.php/geocol/article/view/32023Universidad Nacional de Colombia Revistas electrónicas UN Geología ColombianaGeología ColombianaGeología Colombiana - An International Journal on Geosciences; Vol. 32 (2007); 47-62 Geología Colombiana; Vol. 32 (2007); 47-62 2357-3767 0072-0992Suárez Rodríguez, Mario A. (2007) Geological framework of the pacific coast sedimentary basins, western colombia. Geología Colombiana - An International Journal on Geosciences; Vol. 32 (2007); 47-62 Geología Colombiana; Vol. 32 (2007); 47-62 2357-3767 0072-0992 .Geological framework of the pacific coast sedimentary basins, western colombiaArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTGeocienciasEstratigrafíaBack-arc basinconvergent marginfore-arc basininter-arc basinpull apartsecond order sequence.ORIGINAL32023-117372-1-PB.pdfapplication/pdf11312345https://repositorio.unal.edu.co/bitstream/unal/42397/1/32023-117372-1-PB.pdff0f0af7d078029ba20af748fdae93772MD51THUMBNAIL32023-117372-1-PB.pdf.jpg32023-117372-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg8174https://repositorio.unal.edu.co/bitstream/unal/42397/2/32023-117372-1-PB.pdf.jpg8a0c0b81bd5132bf086c1e410dfcda89MD52unal/42397oai:repositorio.unal.edu.co:unal/423972023-02-07 23:06:01.996Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co