Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina
- Autores
- Comerio, Marcos; Fernández, Diana; Heredia, Arturo; Pazos, Pablo José
- Año de publicación
- 2017
- Idioma
- español castellano
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Microfacies of distal marine deposits of the Lower Cretaceous Agrio Formation – Pilmatué and Agua de la Mula members – in the Neuquén basin has been analyzed taken into account field data, whole-rock phase-minerals and clay mineralogy with X-ray diffraction, organic components and optical and electron microscopy. Depositional and diagenetic fabrics are compared for the lowermost part of both members. Two facies associations were distinguished that correspond to two depositional settings: distal outer ramp (FA-1); and, proximal outer ramp (FA-2). FA-1 is composed of sediments mainly deposited by suspension settling with calcareous microfossils partially preserved as fecal pellets and organo-minerallic aggregates related to high bioproductivity in the water column. Conversely, FA-2 is dominated by extrabasinal components with illite-rich clay- to silt-si - zed particle aggregates. Storm-influenced processes have a main role in sediment transportation and accumulation as well as controlling oxygenation pulses of the bottom waters. In addition, burial diagenesis was evaluated taking into account thermal maturity of organics together with diagenetic textures such as growth of authigenic minerals and mechanical and chemical compaction features. Due to clay mineral assemblages are mainly detrital in origin the possible effects of burial diagenesis on them cannot be directly evaluated.
- Materia
-
Geología
microfacies
rampa externa
formacion agrio - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Repositorio
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/7997
Ver los metadatos del registro completo
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Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, ArgentinaComerio, MarcosFernández, DianaHeredia, ArturoPazos, Pablo JoséGeologíamicrofaciesrampa externaformacion agrioMicrofacies of distal marine deposits of the Lower Cretaceous Agrio Formation – Pilmatué and Agua de la Mula members – in the Neuquén basin has been analyzed taken into account field data, whole-rock phase-minerals and clay mineralogy with X-ray diffraction, organic components and optical and electron microscopy. Depositional and diagenetic fabrics are compared for the lowermost part of both members. Two facies associations were distinguished that correspond to two depositional settings: distal outer ramp (FA-1); and, proximal outer ramp (FA-2). FA-1 is composed of sediments mainly deposited by suspension settling with calcareous microfossils partially preserved as fecal pellets and organo-minerallic aggregates related to high bioproductivity in the water column. Conversely, FA-2 is dominated by extrabasinal components with illite-rich clay- to silt-si - zed particle aggregates. Storm-influenced processes have a main role in sediment transportation and accumulation as well as controlling oxygenation pulses of the bottom waters. In addition, burial diagenesis was evaluated taking into account thermal maturity of organics together with diagenetic textures such as growth of authigenic minerals and mechanical and chemical compaction features. Due to clay mineral assemblages are mainly detrital in origin the possible effects of burial diagenesis on them cannot be directly evaluated.2017-08info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/7997spainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:40:00Zoai:digital.cic.gba.gob.ar:11746/7997Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:40:00.677CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse |
dc.title.none.fl_str_mv |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
title |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
spellingShingle |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina Comerio, Marcos Geología microfacies rampa externa formacion agrio |
title_short |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
title_full |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
title_fullStr |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
title_full_unstemmed |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
title_sort |
Análisis sedimentológico de facies de rampa externa: la Formación Agrio (Cretácico inferior), en el sector central de la Cuenca Neuquina, Argentina |
dc.creator.none.fl_str_mv |
Comerio, Marcos Fernández, Diana Heredia, Arturo Pazos, Pablo José |
author |
Comerio, Marcos |
author_facet |
Comerio, Marcos Fernández, Diana Heredia, Arturo Pazos, Pablo José |
author_role |
author |
author2 |
Fernández, Diana Heredia, Arturo Pazos, Pablo José |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Geología microfacies rampa externa formacion agrio |
topic |
Geología microfacies rampa externa formacion agrio |
dc.description.none.fl_txt_mv |
Microfacies of distal marine deposits of the Lower Cretaceous Agrio Formation – Pilmatué and Agua de la Mula members – in the Neuquén basin has been analyzed taken into account field data, whole-rock phase-minerals and clay mineralogy with X-ray diffraction, organic components and optical and electron microscopy. Depositional and diagenetic fabrics are compared for the lowermost part of both members. Two facies associations were distinguished that correspond to two depositional settings: distal outer ramp (FA-1); and, proximal outer ramp (FA-2). FA-1 is composed of sediments mainly deposited by suspension settling with calcareous microfossils partially preserved as fecal pellets and organo-minerallic aggregates related to high bioproductivity in the water column. Conversely, FA-2 is dominated by extrabasinal components with illite-rich clay- to silt-si - zed particle aggregates. Storm-influenced processes have a main role in sediment transportation and accumulation as well as controlling oxygenation pulses of the bottom waters. In addition, burial diagenesis was evaluated taking into account thermal maturity of organics together with diagenetic textures such as growth of authigenic minerals and mechanical and chemical compaction features. Due to clay mineral assemblages are mainly detrital in origin the possible effects of burial diagenesis on them cannot be directly evaluated. |
description |
Microfacies of distal marine deposits of the Lower Cretaceous Agrio Formation – Pilmatué and Agua de la Mula members – in the Neuquén basin has been analyzed taken into account field data, whole-rock phase-minerals and clay mineralogy with X-ray diffraction, organic components and optical and electron microscopy. Depositional and diagenetic fabrics are compared for the lowermost part of both members. Two facies associations were distinguished that correspond to two depositional settings: distal outer ramp (FA-1); and, proximal outer ramp (FA-2). FA-1 is composed of sediments mainly deposited by suspension settling with calcareous microfossils partially preserved as fecal pellets and organo-minerallic aggregates related to high bioproductivity in the water column. Conversely, FA-2 is dominated by extrabasinal components with illite-rich clay- to silt-si - zed particle aggregates. Storm-influenced processes have a main role in sediment transportation and accumulation as well as controlling oxygenation pulses of the bottom waters. In addition, burial diagenesis was evaluated taking into account thermal maturity of organics together with diagenetic textures such as growth of authigenic minerals and mechanical and chemical compaction features. Due to clay mineral assemblages are mainly detrital in origin the possible effects of burial diagenesis on them cannot be directly evaluated. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
https://digital.cic.gba.gob.ar/handle/11746/7997 |
url |
https://digital.cic.gba.gob.ar/handle/11746/7997 |
dc.language.none.fl_str_mv |
spa |
language |
spa |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:CIC Digital (CICBA) instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires instacron:CICBA |
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Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
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CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
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marisa.degiusti@sedici.unlp.edu.ar |
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