Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basi...

Autores
Spalletti, Luis Antonio; Schwarz, Ernesto; Veiga, Gonzalo Diego
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
During the Early Jurassic – Early Cretaceous, between 32º and 40º S latitude, a steeply dipping active subduction zone along the western margin of Gondwana led to the development of a magmatic arc and a large back-arc depression known as the Neuquén Basin. A thick record of Tithonian – Berriasian organic rich sediments resulted from back-arc subsidence, expansion of the marine realm and flooding of the basin, which was presumably connected to the proto-Pacific Ocean through gaps in the magmatic arc. Widespread and persistent starved conditions in the basinal areas of the Neuquén Sea allowed the accumulation of a thick record of hybrid siliciclastic-carbonate sediments (“Vaca Muerta Facies”), while along the eastern and southeastern cratonic basin margins, inner ramp deposits (“Quintuco Facies”) were dominated by biogenic and clastic carbonates with subordinated muds, sands and salt deposits. The “Vaca Muerta Facies” is essentially composed of two (aggradational and progradational) accommodation sets. The aggradational set consists of hundred meters thick and widely distributed organic-rich silty and clayey mudstones with varying proportion of hemipelagic/pelagic siliceous and carbonate contribution, accumulated in the more distal sectors of the marine ramp under anoxic to suboxic conditions. The progradational sets, developed between the inner ramp and the deeper sectors of the basin, extend hundreds of kilometres both along and across the depositional dip, showing sigmoidal or clinoform geometries with well-defined topset, foreset, and toeset configurations. In comparison with the aggradational sets, these intraplatform clinoforms are enriched in intrabasinal carbonate components and exhibit a reduction in organic matter content denoting a comparative increase in oxygenation of the marine bottom waters. If the productivity of pelagic biogenic carbonates was approximately constant at the basin level, the increase in the proportion of these components in the intraplatform clinoform deposits is attributed to the resuspension and dispersal of biogenic and clastic carbonate particles and grains from the internal ramp deposits ("Quintuco facies") by cross-shelf oriented barotropic currents. These currents seem to be related either to storms and/or to deflection by the Coriolis Effect (Ekman component) of highly efficient geostrophic contour currents at depths above the pycnocline. In the “Vaca Muerta facies” the supply of terrigenous siliciclastic particles has been voluminous and persistent, and the main source for these components was most probably the magmatic arc located to the western flank of the Neuquén Basin. Due to the marked stagnation and density stratification of the Neuquén Sea waters, much of the terrigenous fine-grained material was dispersed in the basinal and offshore settings of the basin by suspension plumes mobilised by baroclinic currents that travelled for long distances above the pycnocline.
Fil: Spalletti, Luis Antonio. 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: 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: Veiga, Gonzalo Diego. 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
FINE-GRAINED PARTICLES
DEPOSITIONAL PROCESSES
VACA MUERTA–QUINTUCO SYSTEM
NEUQUÉN BASIN
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acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
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CONICET Digital (CONICET)
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Consejo Nacional de Investigaciones Científicas y Técnicas
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Acceder
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network_name_str CONICET Digital (CONICET)
spelling Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)Spalletti, Luis AntonioSchwarz, ErnestoVeiga, Gonzalo DiegoFINE-GRAINED PARTICLESDEPOSITIONAL PROCESSESVACA MUERTA–QUINTUCO SYSTEMNEUQUÉN BASINhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1During the Early Jurassic – Early Cretaceous, between 32º and 40º S latitude, a steeply dipping active subduction zone along the western margin of Gondwana led to the development of a magmatic arc and a large back-arc depression known as the Neuquén Basin. A thick record of Tithonian – Berriasian organic rich sediments resulted from back-arc subsidence, expansion of the marine realm and flooding of the basin, which was presumably connected to the proto-Pacific Ocean through gaps in the magmatic arc. Widespread and persistent starved conditions in the basinal areas of the Neuquén Sea allowed the accumulation of a thick record of hybrid siliciclastic-carbonate sediments (“Vaca Muerta Facies”), while along the eastern and southeastern cratonic basin margins, inner ramp deposits (“Quintuco Facies”) were dominated by biogenic and clastic carbonates with subordinated muds, sands and salt deposits. The “Vaca Muerta Facies” is essentially composed of two (aggradational and progradational) accommodation sets. The aggradational set consists of hundred meters thick and widely distributed organic-rich silty and clayey mudstones with varying proportion of hemipelagic/pelagic siliceous and carbonate contribution, accumulated in the more distal sectors of the marine ramp under anoxic to suboxic conditions. The progradational sets, developed between the inner ramp and the deeper sectors of the basin, extend hundreds of kilometres both along and across the depositional dip, showing sigmoidal or clinoform geometries with well-defined topset, foreset, and toeset configurations. In comparison with the aggradational sets, these intraplatform clinoforms are enriched in intrabasinal carbonate components and exhibit a reduction in organic matter content denoting a comparative increase in oxygenation of the marine bottom waters. If the productivity of pelagic biogenic carbonates was approximately constant at the basin level, the increase in the proportion of these components in the intraplatform clinoform deposits is attributed to the resuspension and dispersal of biogenic and clastic carbonate particles and grains from the internal ramp deposits ("Quintuco facies") by cross-shelf oriented barotropic currents. These currents seem to be related either to storms and/or to deflection by the Coriolis Effect (Ekman component) of highly efficient geostrophic contour currents at depths above the pycnocline. In the “Vaca Muerta facies” the supply of terrigenous siliciclastic particles has been voluminous and persistent, and the main source for these components was most probably the magmatic arc located to the western flank of the Neuquén Basin. Due to the marked stagnation and density stratification of the Neuquén Sea waters, much of the terrigenous fine-grained material was dispersed in the basinal and offshore settings of the basin by suspension plumes mobilised by baroclinic currents that travelled for long distances above the pycnocline.Fil: Spalletti, Luis Antonio. 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: 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: Veiga, Gonzalo Diego. 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; ArgentinaAsociación Argentina de Sedimentología2025-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/285940Spalletti, Luis Antonio; Schwarz, Ernesto; Veiga, Gonzalo Diego; Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina); Asociación Argentina de Sedimentología; Latin American Journal of Sedimentology and Basin Analysis; 32; 2; 12-2025; 150-1671669-73161851-4979CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://lajsba.sedimentologia.org.ar/lajsba/article/view/267info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:31:31Zoai:ri.conicet.gov.ar:11336/285940instacron: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:34982026-08-25 14:31:31.733CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
title Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
spellingShingle Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
Spalletti, Luis Antonio
FINE-GRAINED PARTICLES
DEPOSITIONAL PROCESSES
VACA MUERTA–QUINTUCO SYSTEM
NEUQUÉN BASIN
title_short Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
title_full Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
title_fullStr Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
title_full_unstemmed Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
title_sort Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina)
dc.creator.none.fl_str_mv Spalletti, Luis Antonio
Schwarz, Ernesto
Veiga, Gonzalo Diego
author Spalletti, Luis Antonio
author_facet Spalletti, Luis Antonio
Schwarz, Ernesto
Veiga, Gonzalo Diego
author_role author
author2 Schwarz, Ernesto
Veiga, Gonzalo Diego
author2_role author
author
dc.subject.none.fl_str_mv FINE-GRAINED PARTICLES
DEPOSITIONAL PROCESSES
VACA MUERTA–QUINTUCO SYSTEM
NEUQUÉN BASIN
topic FINE-GRAINED PARTICLES
DEPOSITIONAL PROCESSES
VACA MUERTA–QUINTUCO SYSTEM
NEUQUÉN 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 During the Early Jurassic – Early Cretaceous, between 32º and 40º S latitude, a steeply dipping active subduction zone along the western margin of Gondwana led to the development of a magmatic arc and a large back-arc depression known as the Neuquén Basin. A thick record of Tithonian – Berriasian organic rich sediments resulted from back-arc subsidence, expansion of the marine realm and flooding of the basin, which was presumably connected to the proto-Pacific Ocean through gaps in the magmatic arc. Widespread and persistent starved conditions in the basinal areas of the Neuquén Sea allowed the accumulation of a thick record of hybrid siliciclastic-carbonate sediments (“Vaca Muerta Facies”), while along the eastern and southeastern cratonic basin margins, inner ramp deposits (“Quintuco Facies”) were dominated by biogenic and clastic carbonates with subordinated muds, sands and salt deposits. The “Vaca Muerta Facies” is essentially composed of two (aggradational and progradational) accommodation sets. The aggradational set consists of hundred meters thick and widely distributed organic-rich silty and clayey mudstones with varying proportion of hemipelagic/pelagic siliceous and carbonate contribution, accumulated in the more distal sectors of the marine ramp under anoxic to suboxic conditions. The progradational sets, developed between the inner ramp and the deeper sectors of the basin, extend hundreds of kilometres both along and across the depositional dip, showing sigmoidal or clinoform geometries with well-defined topset, foreset, and toeset configurations. In comparison with the aggradational sets, these intraplatform clinoforms are enriched in intrabasinal carbonate components and exhibit a reduction in organic matter content denoting a comparative increase in oxygenation of the marine bottom waters. If the productivity of pelagic biogenic carbonates was approximately constant at the basin level, the increase in the proportion of these components in the intraplatform clinoform deposits is attributed to the resuspension and dispersal of biogenic and clastic carbonate particles and grains from the internal ramp deposits ("Quintuco facies") by cross-shelf oriented barotropic currents. These currents seem to be related either to storms and/or to deflection by the Coriolis Effect (Ekman component) of highly efficient geostrophic contour currents at depths above the pycnocline. In the “Vaca Muerta facies” the supply of terrigenous siliciclastic particles has been voluminous and persistent, and the main source for these components was most probably the magmatic arc located to the western flank of the Neuquén Basin. Due to the marked stagnation and density stratification of the Neuquén Sea waters, much of the terrigenous fine-grained material was dispersed in the basinal and offshore settings of the basin by suspension plumes mobilised by baroclinic currents that travelled for long distances above the pycnocline.
Fil: Spalletti, Luis Antonio. 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: 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: Veiga, Gonzalo Diego. 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 During the Early Jurassic – Early Cretaceous, between 32º and 40º S latitude, a steeply dipping active subduction zone along the western margin of Gondwana led to the development of a magmatic arc and a large back-arc depression known as the Neuquén Basin. A thick record of Tithonian – Berriasian organic rich sediments resulted from back-arc subsidence, expansion of the marine realm and flooding of the basin, which was presumably connected to the proto-Pacific Ocean through gaps in the magmatic arc. Widespread and persistent starved conditions in the basinal areas of the Neuquén Sea allowed the accumulation of a thick record of hybrid siliciclastic-carbonate sediments (“Vaca Muerta Facies”), while along the eastern and southeastern cratonic basin margins, inner ramp deposits (“Quintuco Facies”) were dominated by biogenic and clastic carbonates with subordinated muds, sands and salt deposits. The “Vaca Muerta Facies” is essentially composed of two (aggradational and progradational) accommodation sets. The aggradational set consists of hundred meters thick and widely distributed organic-rich silty and clayey mudstones with varying proportion of hemipelagic/pelagic siliceous and carbonate contribution, accumulated in the more distal sectors of the marine ramp under anoxic to suboxic conditions. The progradational sets, developed between the inner ramp and the deeper sectors of the basin, extend hundreds of kilometres both along and across the depositional dip, showing sigmoidal or clinoform geometries with well-defined topset, foreset, and toeset configurations. In comparison with the aggradational sets, these intraplatform clinoforms are enriched in intrabasinal carbonate components and exhibit a reduction in organic matter content denoting a comparative increase in oxygenation of the marine bottom waters. If the productivity of pelagic biogenic carbonates was approximately constant at the basin level, the increase in the proportion of these components in the intraplatform clinoform deposits is attributed to the resuspension and dispersal of biogenic and clastic carbonate particles and grains from the internal ramp deposits ("Quintuco facies") by cross-shelf oriented barotropic currents. These currents seem to be related either to storms and/or to deflection by the Coriolis Effect (Ekman component) of highly efficient geostrophic contour currents at depths above the pycnocline. In the “Vaca Muerta facies” the supply of terrigenous siliciclastic particles has been voluminous and persistent, and the main source for these components was most probably the magmatic arc located to the western flank of the Neuquén Basin. Due to the marked stagnation and density stratification of the Neuquén Sea waters, much of the terrigenous fine-grained material was dispersed in the basinal and offshore settings of the basin by suspension plumes mobilised by baroclinic currents that travelled for long distances above the pycnocline.
publishDate 2025
dc.date.none.fl_str_mv 2025-12
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/11336/285940
Spalletti, Luis Antonio; Schwarz, Ernesto; Veiga, Gonzalo Diego; Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina); Asociación Argentina de Sedimentología; Latin American Journal of Sedimentology and Basin Analysis; 32; 2; 12-2025; 150-167
1669-7316
1851-4979
CONICET Digital
CONICET
url http://hdl.handle.net/11336/285940
identifier_str_mv Spalletti, Luis Antonio; Schwarz, Ernesto; Veiga, Gonzalo Diego; Provenance and depositional processes of extrabasinal (siliciclastic) and intrabasinal (carbonate) particles of the Tithonian-Berriasian Vaca Muerta – Quintuco system (Neuquén Basin, Argentina); Asociación Argentina de Sedimentología; Latin American Journal of Sedimentology and Basin Analysis; 32; 2; 12-2025; 150-167
1669-7316
1851-4979
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://lajsba.sedimentologia.org.ar/lajsba/article/view/267
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Asociación Argentina de Sedimentología
publisher.none.fl_str_mv Asociación Argentina de Sedimentología
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 13.265058

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