Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina

Autores
Privat, Aurélia M. L.; Peakall, Jeff; Hodgson, David M.; Schwarz, Ernesto; Jackson, Christopher A. L.; Arnol, Jonatan Ariel
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Inherited rift topography controls the sediment routeing, timing of sand supply, and sedimentary linkage of early post-rift depocentres. Exhumed examples of early post-rift turbidite systems are rare and previous studies have examined the evolution of individual depocentres; in contrast, the detailed evolution of early post-rift turbidite systems across multiple depocentres has never been documented. Current fill-and-spill models do not detail the stratigraphic architecture and evolution of sedimentological characteristics of multiple intraslope fans developed across topography, including bed type distributions. Here, the evolution of three intraslope fans that developed across two early post-rift depocentres is documented along an 18 km-long transect in the southern Neuquén Basin, Argentina. The relative chronology of sand supply in depocentres is constrained with new U-Pb ages, and sediment source areas with provenance analysis. The early post-rift intraslope fans record progradation of the system and progressive sedimentary linkage of post-rift depocentres, transverse to local syn-rift structures, with sediment routeing subparallel to the cratonic basin margin. The large-scale stratigraphic architecture of intraslope fans indicates an evolution as a fill-and-spill system, with initial confinement through flow stripping and overspill to spillover with erosion and bypass across a transverse topographic high separating the depocentres. Changes in early post-rift intraslope fan characteristics, including thickness, sandstone content, lobe complex stacking patterns, stratal termination patterns, and bed type distribution, record changing confinement through time within a depocentre, and spatially across depocentres. The strong spatial and vertical stratigraphic variability of transitional flow deposits and hybrid event beds reflects enhanced erosion, sediment bypass and flow transformation across transverse relief between the two depocentres during the spillover phase. These findings advance our understanding of early post-rift turbidite systems and refine fill-and-spill models, which will help the prediction of spatial and vertical changes in rock quality and connectivity in subsurface hydrocarbon reservoirs and CO2 storage sites.
Fil: Privat, Aurélia M. L.. University of Leeds; Reino Unido
Fil: Peakall, Jeff. University of Leeds; Reino Unido
Fil: Hodgson, David M.. University of Leeds; Reino Unido
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
Fil: Jackson, Christopher A. L.. Imperial College London; Reino Unido
Fil: Arnol, Jonatan Ariel. 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
Materia
EARLY POST-RIFT
INTRASLOPE LOBES
FILL-AND-SPILL
NEUQUEN BASIN
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/238743
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, ArgentinaPrivat, Aurélia M. L.Peakall, JeffHodgson, David M.Schwarz, ErnestoJackson, Christopher A. L.Arnol, Jonatan ArielEARLY POST-RIFTINTRASLOPE LOBESFILL-AND-SPILLNEUQUEN BASINhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Inherited rift topography controls the sediment routeing, timing of sand supply, and sedimentary linkage of early post-rift depocentres. Exhumed examples of early post-rift turbidite systems are rare and previous studies have examined the evolution of individual depocentres; in contrast, the detailed evolution of early post-rift turbidite systems across multiple depocentres has never been documented. Current fill-and-spill models do not detail the stratigraphic architecture and evolution of sedimentological characteristics of multiple intraslope fans developed across topography, including bed type distributions. Here, the evolution of three intraslope fans that developed across two early post-rift depocentres is documented along an 18 km-long transect in the southern Neuquén Basin, Argentina. The relative chronology of sand supply in depocentres is constrained with new U-Pb ages, and sediment source areas with provenance analysis. The early post-rift intraslope fans record progradation of the system and progressive sedimentary linkage of post-rift depocentres, transverse to local syn-rift structures, with sediment routeing subparallel to the cratonic basin margin. The large-scale stratigraphic architecture of intraslope fans indicates an evolution as a fill-and-spill system, with initial confinement through flow stripping and overspill to spillover with erosion and bypass across a transverse topographic high separating the depocentres. Changes in early post-rift intraslope fan characteristics, including thickness, sandstone content, lobe complex stacking patterns, stratal termination patterns, and bed type distribution, record changing confinement through time within a depocentre, and spatially across depocentres. The strong spatial and vertical stratigraphic variability of transitional flow deposits and hybrid event beds reflects enhanced erosion, sediment bypass and flow transformation across transverse relief between the two depocentres during the spillover phase. These findings advance our understanding of early post-rift turbidite systems and refine fill-and-spill models, which will help the prediction of spatial and vertical changes in rock quality and connectivity in subsurface hydrocarbon reservoirs and CO2 storage sites.Fil: Privat, Aurélia M. L.. University of Leeds; Reino UnidoFil: Peakall, Jeff. University of Leeds; Reino UnidoFil: Hodgson, David M.. University of Leeds; Reino UnidoFil: 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; ArgentinaFil: Jackson, Christopher A. L.. Imperial College London; Reino UnidoFil: Arnol, Jonatan Ariel. 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; ArgentinaWiley Blackwell Publishing, Inc2024-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/238743Privat, Aurélia M. L.; Peakall, Jeff; Hodgson, David M.; Schwarz, Ernesto; Jackson, Christopher A. L.; et al.; Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina; Wiley Blackwell Publishing, Inc; Sedimentology; 6-2024; 1-500037-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/sed.13190info:eu-repo/semantics/altIdentifier/doi/10.1111/sed.13190info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:08:58Zoai:ri.conicet.gov.ar:11336/238743instacron: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:34982025-09-29 10:08:58.543CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
title Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
spellingShingle Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
Privat, Aurélia M. L.
EARLY POST-RIFT
INTRASLOPE LOBES
FILL-AND-SPILL
NEUQUEN BASIN
title_short Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
title_full Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
title_fullStr Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
title_full_unstemmed Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
title_sort Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina
dc.creator.none.fl_str_mv Privat, Aurélia M. L.
Peakall, Jeff
Hodgson, David M.
Schwarz, Ernesto
Jackson, Christopher A. L.
Arnol, Jonatan Ariel
author Privat, Aurélia M. L.
author_facet Privat, Aurélia M. L.
Peakall, Jeff
Hodgson, David M.
Schwarz, Ernesto
Jackson, Christopher A. L.
Arnol, Jonatan Ariel
author_role author
author2 Peakall, Jeff
Hodgson, David M.
Schwarz, Ernesto
Jackson, Christopher A. L.
Arnol, Jonatan Ariel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv EARLY POST-RIFT
INTRASLOPE LOBES
FILL-AND-SPILL
NEUQUEN BASIN
topic EARLY POST-RIFT
INTRASLOPE LOBES
FILL-AND-SPILL
NEUQUEN BASIN
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Inherited rift topography controls the sediment routeing, timing of sand supply, and sedimentary linkage of early post-rift depocentres. Exhumed examples of early post-rift turbidite systems are rare and previous studies have examined the evolution of individual depocentres; in contrast, the detailed evolution of early post-rift turbidite systems across multiple depocentres has never been documented. Current fill-and-spill models do not detail the stratigraphic architecture and evolution of sedimentological characteristics of multiple intraslope fans developed across topography, including bed type distributions. Here, the evolution of three intraslope fans that developed across two early post-rift depocentres is documented along an 18 km-long transect in the southern Neuquén Basin, Argentina. The relative chronology of sand supply in depocentres is constrained with new U-Pb ages, and sediment source areas with provenance analysis. The early post-rift intraslope fans record progradation of the system and progressive sedimentary linkage of post-rift depocentres, transverse to local syn-rift structures, with sediment routeing subparallel to the cratonic basin margin. The large-scale stratigraphic architecture of intraslope fans indicates an evolution as a fill-and-spill system, with initial confinement through flow stripping and overspill to spillover with erosion and bypass across a transverse topographic high separating the depocentres. Changes in early post-rift intraslope fan characteristics, including thickness, sandstone content, lobe complex stacking patterns, stratal termination patterns, and bed type distribution, record changing confinement through time within a depocentre, and spatially across depocentres. The strong spatial and vertical stratigraphic variability of transitional flow deposits and hybrid event beds reflects enhanced erosion, sediment bypass and flow transformation across transverse relief between the two depocentres during the spillover phase. These findings advance our understanding of early post-rift turbidite systems and refine fill-and-spill models, which will help the prediction of spatial and vertical changes in rock quality and connectivity in subsurface hydrocarbon reservoirs and CO2 storage sites.
Fil: Privat, Aurélia M. L.. University of Leeds; Reino Unido
Fil: Peakall, Jeff. University of Leeds; Reino Unido
Fil: Hodgson, David M.. University of Leeds; Reino Unido
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
Fil: Jackson, Christopher A. L.. Imperial College London; Reino Unido
Fil: Arnol, Jonatan Ariel. 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
description Inherited rift topography controls the sediment routeing, timing of sand supply, and sedimentary linkage of early post-rift depocentres. Exhumed examples of early post-rift turbidite systems are rare and previous studies have examined the evolution of individual depocentres; in contrast, the detailed evolution of early post-rift turbidite systems across multiple depocentres has never been documented. Current fill-and-spill models do not detail the stratigraphic architecture and evolution of sedimentological characteristics of multiple intraslope fans developed across topography, including bed type distributions. Here, the evolution of three intraslope fans that developed across two early post-rift depocentres is documented along an 18 km-long transect in the southern Neuquén Basin, Argentina. The relative chronology of sand supply in depocentres is constrained with new U-Pb ages, and sediment source areas with provenance analysis. The early post-rift intraslope fans record progradation of the system and progressive sedimentary linkage of post-rift depocentres, transverse to local syn-rift structures, with sediment routeing subparallel to the cratonic basin margin. The large-scale stratigraphic architecture of intraslope fans indicates an evolution as a fill-and-spill system, with initial confinement through flow stripping and overspill to spillover with erosion and bypass across a transverse topographic high separating the depocentres. Changes in early post-rift intraslope fan characteristics, including thickness, sandstone content, lobe complex stacking patterns, stratal termination patterns, and bed type distribution, record changing confinement through time within a depocentre, and spatially across depocentres. The strong spatial and vertical stratigraphic variability of transitional flow deposits and hybrid event beds reflects enhanced erosion, sediment bypass and flow transformation across transverse relief between the two depocentres during the spillover phase. These findings advance our understanding of early post-rift turbidite systems and refine fill-and-spill models, which will help the prediction of spatial and vertical changes in rock quality and connectivity in subsurface hydrocarbon reservoirs and CO2 storage sites.
publishDate 2024
dc.date.none.fl_str_mv 2024-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/238743
Privat, Aurélia M. L.; Peakall, Jeff; Hodgson, David M.; Schwarz, Ernesto; Jackson, Christopher A. L.; et al.; Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina; Wiley Blackwell Publishing, Inc; Sedimentology; 6-2024; 1-50
0037-0746
CONICET Digital
CONICET
url http://hdl.handle.net/11336/238743
identifier_str_mv Privat, Aurélia M. L.; Peakall, Jeff; Hodgson, David M.; Schwarz, Ernesto; Jackson, Christopher A. L.; et al.; Evolving fill‐and‐spill patterns across linked early post‐rift depocentres control lobe characteristics: Los Molles Formation, Argentina; Wiley Blackwell Publishing, Inc; Sedimentology; 6-2024; 1-50
0037-0746
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://onlinelibrary.wiley.com/doi/10.1111/sed.13190
info:eu-repo/semantics/altIdentifier/doi/10.1111/sed.13190
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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 13.070432

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