Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)

Autores
Mon, Lucas Francisco; Gugliotta, Marcello; Schwarz, Ernesto
Año de publicación
2023
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Marginal-marine environments show a large number of physicochemical processes (e.g., fluvial currents, tides, waves, salinity changes) that operate at different temporal and spatial scales. To better understand this complexity this study focused on the succession of the Pilmatué Member (Agrio Formation, Lower Cretaceous, Neuquén Basin, Argentina) with the aim to unravel the sedimentary processes, facies associations and accumulation of this marginal marine system. The succession was studied with log descriptions and facies analysis using a total of 150 m of cores from two distinct wells.The succession is siliciclastic dominated, arranged in a general coarsening upward trend and consists of five facies associations interpreted as: delta plain, distributary channels, mouth bar complex, distal-delta front and transgressive deposits. The distal-delta front contains veryfine sandstones interbedded with bioturbated mudstones with flaser to horizontal lamination. The mouth-bar complex involves a variety of carbonaceous-rich very-fine sandstones with horizontal lamination or structureless. The distributary channels show erosional bases and consist of carbonaceous-rich very-fine sandstones with cross bedding, asymmetrical ripples, intraclast mudstones and soft sediment deformation. The delta plain includes mudstones and very-fine sandstones with asymmetric ripples, root marks and high bioturbation index. Finally, the transgressive deposits consist of bioclastic sandstones. The succession was interpreted as a deltaic system recording a progradational shallowing-upward trend and changes in the depositional processes from wave-dominated, tide-influenced distal-delta front deposits to proximal fluvial-dominated delta-plain deposits. Understanding spatial-temporal variability in process regime recorded in similar marginal-marine successions requires a bed by bed detailed description, which, in this study, was allowed by the superb quality of the Pilmatué Member cores. This study demonstrates that even within relative thin packages (10–15 m) the system does not necessarily have to be “one process dominated” but show a variability of process as the system shifts between proximal to distal environments.
Fil: Mon, Lucas Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Gugliotta, Marcello. Universitat Bremen; Alemania. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
36th International Meeting of Sedimentology
Dubrovnik
Croacia
International Association of Sedimentologists
Materia
PILMATUÉ MB
NEUQUÉN BASIN
DELTAIC SYSTEMS
PROCESSES VARIABILITY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/236571
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/236571
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)Mon, Lucas FranciscoGugliotta, MarcelloSchwarz, ErnestoPILMATUÉ MBNEUQUÉN BASINDELTAIC SYSTEMSPROCESSES VARIABILITYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Marginal-marine environments show a large number of physicochemical processes (e.g., fluvial currents, tides, waves, salinity changes) that operate at different temporal and spatial scales. To better understand this complexity this study focused on the succession of the Pilmatué Member (Agrio Formation, Lower Cretaceous, Neuquén Basin, Argentina) with the aim to unravel the sedimentary processes, facies associations and accumulation of this marginal marine system. The succession was studied with log descriptions and facies analysis using a total of 150 m of cores from two distinct wells.The succession is siliciclastic dominated, arranged in a general coarsening upward trend and consists of five facies associations interpreted as: delta plain, distributary channels, mouth bar complex, distal-delta front and transgressive deposits. The distal-delta front contains veryfine sandstones interbedded with bioturbated mudstones with flaser to horizontal lamination. The mouth-bar complex involves a variety of carbonaceous-rich very-fine sandstones with horizontal lamination or structureless. The distributary channels show erosional bases and consist of carbonaceous-rich very-fine sandstones with cross bedding, asymmetrical ripples, intraclast mudstones and soft sediment deformation. The delta plain includes mudstones and very-fine sandstones with asymmetric ripples, root marks and high bioturbation index. Finally, the transgressive deposits consist of bioclastic sandstones. The succession was interpreted as a deltaic system recording a progradational shallowing-upward trend and changes in the depositional processes from wave-dominated, tide-influenced distal-delta front deposits to proximal fluvial-dominated delta-plain deposits. Understanding spatial-temporal variability in process regime recorded in similar marginal-marine successions requires a bed by bed detailed description, which, in this study, was allowed by the superb quality of the Pilmatué Member cores. This study demonstrates that even within relative thin packages (10–15 m) the system does not necessarily have to be “one process dominated” but show a variability of process as the system shifts between proximal to distal environments.Fil: Mon, Lucas Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Gugliotta, Marcello. Universitat Bremen; Alemania. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina36th International Meeting of SedimentologyDubrovnikCroaciaInternational Association of SedimentologistsInternational Association of SedimentologistsVlahović, IgorMatešić, Darko2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/236571Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina); 36th International Meeting of Sedimentology; Dubrovnik; Croacia; 2023; 245-245978-953-6907-79-3CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iasdubrovnik2023.org/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:54:13Zoai:ri.conicet.gov.ar:11336/236571instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:54:14.266CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
title Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
spellingShingle Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
Mon, Lucas Francisco
PILMATUÉ MB
NEUQUÉN BASIN
DELTAIC SYSTEMS
PROCESSES VARIABILITY
title_short Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
title_full Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
title_fullStr Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
title_full_unstemmed Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
title_sort Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina)
dc.creator.none.fl_str_mv Mon, Lucas Francisco
Gugliotta, Marcello
Schwarz, Ernesto
author Mon, Lucas Francisco
author_facet Mon, Lucas Francisco
Gugliotta, Marcello
Schwarz, Ernesto
author_role author
author2 Gugliotta, Marcello
Schwarz, Ernesto
author2_role author
author
dc.contributor.none.fl_str_mv Vlahović, Igor
Matešić, Darko
dc.subject.none.fl_str_mv PILMATUÉ MB
NEUQUÉN BASIN
DELTAIC SYSTEMS
PROCESSES VARIABILITY
topic PILMATUÉ MB
NEUQUÉN BASIN
DELTAIC SYSTEMS
PROCESSES VARIABILITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Marginal-marine environments show a large number of physicochemical processes (e.g., fluvial currents, tides, waves, salinity changes) that operate at different temporal and spatial scales. To better understand this complexity this study focused on the succession of the Pilmatué Member (Agrio Formation, Lower Cretaceous, Neuquén Basin, Argentina) with the aim to unravel the sedimentary processes, facies associations and accumulation of this marginal marine system. The succession was studied with log descriptions and facies analysis using a total of 150 m of cores from two distinct wells.The succession is siliciclastic dominated, arranged in a general coarsening upward trend and consists of five facies associations interpreted as: delta plain, distributary channels, mouth bar complex, distal-delta front and transgressive deposits. The distal-delta front contains veryfine sandstones interbedded with bioturbated mudstones with flaser to horizontal lamination. The mouth-bar complex involves a variety of carbonaceous-rich very-fine sandstones with horizontal lamination or structureless. The distributary channels show erosional bases and consist of carbonaceous-rich very-fine sandstones with cross bedding, asymmetrical ripples, intraclast mudstones and soft sediment deformation. The delta plain includes mudstones and very-fine sandstones with asymmetric ripples, root marks and high bioturbation index. Finally, the transgressive deposits consist of bioclastic sandstones. The succession was interpreted as a deltaic system recording a progradational shallowing-upward trend and changes in the depositional processes from wave-dominated, tide-influenced distal-delta front deposits to proximal fluvial-dominated delta-plain deposits. Understanding spatial-temporal variability in process regime recorded in similar marginal-marine successions requires a bed by bed detailed description, which, in this study, was allowed by the superb quality of the Pilmatué Member cores. This study demonstrates that even within relative thin packages (10–15 m) the system does not necessarily have to be “one process dominated” but show a variability of process as the system shifts between proximal to distal environments.
Fil: Mon, Lucas Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Gugliotta, Marcello. Universitat Bremen; Alemania. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
36th International Meeting of Sedimentology
Dubrovnik
Croacia
International Association of Sedimentologists
description Marginal-marine environments show a large number of physicochemical processes (e.g., fluvial currents, tides, waves, salinity changes) that operate at different temporal and spatial scales. To better understand this complexity this study focused on the succession of the Pilmatué Member (Agrio Formation, Lower Cretaceous, Neuquén Basin, Argentina) with the aim to unravel the sedimentary processes, facies associations and accumulation of this marginal marine system. The succession was studied with log descriptions and facies analysis using a total of 150 m of cores from two distinct wells.The succession is siliciclastic dominated, arranged in a general coarsening upward trend and consists of five facies associations interpreted as: delta plain, distributary channels, mouth bar complex, distal-delta front and transgressive deposits. The distal-delta front contains veryfine sandstones interbedded with bioturbated mudstones with flaser to horizontal lamination. The mouth-bar complex involves a variety of carbonaceous-rich very-fine sandstones with horizontal lamination or structureless. The distributary channels show erosional bases and consist of carbonaceous-rich very-fine sandstones with cross bedding, asymmetrical ripples, intraclast mudstones and soft sediment deformation. The delta plain includes mudstones and very-fine sandstones with asymmetric ripples, root marks and high bioturbation index. Finally, the transgressive deposits consist of bioclastic sandstones. The succession was interpreted as a deltaic system recording a progradational shallowing-upward trend and changes in the depositional processes from wave-dominated, tide-influenced distal-delta front deposits to proximal fluvial-dominated delta-plain deposits. Understanding spatial-temporal variability in process regime recorded in similar marginal-marine successions requires a bed by bed detailed description, which, in this study, was allowed by the superb quality of the Pilmatué Member cores. This study demonstrates that even within relative thin packages (10–15 m) the system does not necessarily have to be “one process dominated” but show a variability of process as the system shifts between proximal to distal environments.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Reunión
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/236571
Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina); 36th International Meeting of Sedimentology; Dubrovnik; Croacia; 2023; 245-245
978-953-6907-79-3
CONICET Digital
CONICET
url http://hdl.handle.net/11336/236571
identifier_str_mv Variability in process regime in the Lower Cretaceous Pilmatué marginal-marine system (Neuquén Basin, Argentina); 36th International Meeting of Sedimentology; Dubrovnik; Croacia; 2023; 245-245
978-953-6907-79-3
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://iasdubrovnik2023.org/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Association of Sedimentologists
publisher.none.fl_str_mv International Association of Sedimentologists
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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