Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina

Autores
Irastorza, Ainara; Perez Zavala, Carlos Eduardo; Campetella, Débora Mical; Turienzo, Martin Miguel; Olivera, Daniela Elizabeth; Peralta, Maria Florencia; Irastorza, Maite; Martz, Paula Anabela
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Recent advances in the understanding of deltaic deposits provide new tools for the study and analysis of deltaic deposits in shallow epicontinental seas. After the introduction of sequence stratigraphic concepts, meter-scale coarsening and thickening upward successions have been considered as ?parasequences? originated by high-frequency sea-level changes. Nevertheless, recent studies enhanced the importance of wave-aided low-dense hyperpycnal flows in transporting fine-grained sediments in shallow shelfal areas. These poorly-known (and at the same time very common) types of delta, known as hyperpycnal littoral deltas (HLD), develop very low gradient progradational units, controlled by changes in the sediment supply instead of sea level changes. These small-scale progradational units are very common in shallow epicontinental seas like the Lower Cretaceous Agrio Formation in the Neuquén Basin. This study provides a first detailed analysis of hyperpycnal littoral deltas from the Agua de la Mula Member (upper Hauterivian?lower Barremian) of the Agrio Formation. This unit has been studied in three locations near Bajada del Agrio locality in the central part of the Neuquén Basin, Argentina. Six sandy facies, three heterolithic facies, three muddy facies and four calcareous facies were recognized. From facies analysis, three facies associations could be determined, corresponding to offshore/prodelta, distal ramp delta and proximal ramp delta. The three stratigraphic sections discussed in this study are internally composed of several small-scale sequences showing a coarsening and thickening upward pattern, transitionally going from muddy to sandy wave-dominated facies, and ending with calcareous bioclastics levels on top. These small-scale sequences are interpreted as delta front deposits of wave-influenced hyperpycnal littoral deltas, punctuated by calcareous intervals accumulated during periods of low sediment supply. It is interpreted that the development of hyperpycnal littoral deltas could have been facilitated by a decrease in sea water salinity related to an increasing runoff.
Fil: Irastorza, Ainara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Perez Zavala, Carlos Eduardo. Gcs Argentina Srl; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Campetella, Débora Mical. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Turienzo, Martin Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Peralta, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Irastorza, Maite. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Martz, Paula Anabela. Universidad Nacional del Sur; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Materia
Hyperpycnal littoral deltas
Prograding sequences
Agua de la Mula Member
Neuquén Basin
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:11336/161635
Acceder
id CONICETDig_27ea35aa2f62e2df237600181656dc88
oai_identifier_str oai:ri.conicet.gov.ar:11336/161635
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, ArgentinaIrastorza, AinaraPerez Zavala, Carlos EduardoCampetella, Débora MicalTurienzo, Martin MiguelOlivera, Daniela ElizabethPeralta, Maria FlorenciaIrastorza, MaiteMartz, Paula AnabelaHyperpycnal littoral deltasPrograding sequencesAgua de la Mula MemberNeuquén Basinhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Recent advances in the understanding of deltaic deposits provide new tools for the study and analysis of deltaic deposits in shallow epicontinental seas. After the introduction of sequence stratigraphic concepts, meter-scale coarsening and thickening upward successions have been considered as ?parasequences? originated by high-frequency sea-level changes. Nevertheless, recent studies enhanced the importance of wave-aided low-dense hyperpycnal flows in transporting fine-grained sediments in shallow shelfal areas. These poorly-known (and at the same time very common) types of delta, known as hyperpycnal littoral deltas (HLD), develop very low gradient progradational units, controlled by changes in the sediment supply instead of sea level changes. These small-scale progradational units are very common in shallow epicontinental seas like the Lower Cretaceous Agrio Formation in the Neuquén Basin. This study provides a first detailed analysis of hyperpycnal littoral deltas from the Agua de la Mula Member (upper Hauterivian?lower Barremian) of the Agrio Formation. This unit has been studied in three locations near Bajada del Agrio locality in the central part of the Neuquén Basin, Argentina. Six sandy facies, three heterolithic facies, three muddy facies and four calcareous facies were recognized. From facies analysis, three facies associations could be determined, corresponding to offshore/prodelta, distal ramp delta and proximal ramp delta. The three stratigraphic sections discussed in this study are internally composed of several small-scale sequences showing a coarsening and thickening upward pattern, transitionally going from muddy to sandy wave-dominated facies, and ending with calcareous bioclastics levels on top. These small-scale sequences are interpreted as delta front deposits of wave-influenced hyperpycnal littoral deltas, punctuated by calcareous intervals accumulated during periods of low sediment supply. It is interpreted that the development of hyperpycnal littoral deltas could have been facilitated by a decrease in sea water salinity related to an increasing runoff.Fil: Irastorza, Ainara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Perez Zavala, Carlos Eduardo. Gcs Argentina Srl; Argentina. Universidad Nacional del Sur. Departamento de Geología; ArgentinaFil: Campetella, Débora Mical. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Turienzo, Martin Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Peralta, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Irastorza, Maite. Universidad Nacional del Sur. Departamento de Geología; ArgentinaFil: Martz, Paula Anabela. Universidad Nacional del Sur; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaElsevier2021-11-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/161635Irastorza, Ainara; Perez Zavala, Carlos Eduardo; Campetella, Débora Mical; Turienzo, Martin Miguel; Olivera, Daniela Elizabeth; et al.; Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina; Elsevier; Journal of Palaeogeography; 10; 4; 13-11-2021; 550-5702095-3836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S2095383621000079info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.1016/j.jop.2021.11.004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:40:02Zoai:ri.conicet.gov.ar:11336/161635instacron: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:34982025-10-15 14:40:02.825CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
title Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
spellingShingle Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
Irastorza, Ainara
Hyperpycnal littoral deltas
Prograding sequences
Agua de la Mula Member
Neuquén Basin
title_short Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
title_full Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
title_fullStr Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
title_full_unstemmed Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
title_sort Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina
dc.creator.none.fl_str_mv Irastorza, Ainara
Perez Zavala, Carlos Eduardo
Campetella, Débora Mical
Turienzo, Martin Miguel
Olivera, Daniela Elizabeth
Peralta, Maria Florencia
Irastorza, Maite
Martz, Paula Anabela
author Irastorza, Ainara
author_facet Irastorza, Ainara
Perez Zavala, Carlos Eduardo
Campetella, Débora Mical
Turienzo, Martin Miguel
Olivera, Daniela Elizabeth
Peralta, Maria Florencia
Irastorza, Maite
Martz, Paula Anabela
author_role author
author2 Perez Zavala, Carlos Eduardo
Campetella, Débora Mical
Turienzo, Martin Miguel
Olivera, Daniela Elizabeth
Peralta, Maria Florencia
Irastorza, Maite
Martz, Paula Anabela
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Hyperpycnal littoral deltas
Prograding sequences
Agua de la Mula Member
Neuquén Basin
topic Hyperpycnal littoral deltas
Prograding sequences
Agua de la Mula Member
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 Recent advances in the understanding of deltaic deposits provide new tools for the study and analysis of deltaic deposits in shallow epicontinental seas. After the introduction of sequence stratigraphic concepts, meter-scale coarsening and thickening upward successions have been considered as ?parasequences? originated by high-frequency sea-level changes. Nevertheless, recent studies enhanced the importance of wave-aided low-dense hyperpycnal flows in transporting fine-grained sediments in shallow shelfal areas. These poorly-known (and at the same time very common) types of delta, known as hyperpycnal littoral deltas (HLD), develop very low gradient progradational units, controlled by changes in the sediment supply instead of sea level changes. These small-scale progradational units are very common in shallow epicontinental seas like the Lower Cretaceous Agrio Formation in the Neuquén Basin. This study provides a first detailed analysis of hyperpycnal littoral deltas from the Agua de la Mula Member (upper Hauterivian?lower Barremian) of the Agrio Formation. This unit has been studied in three locations near Bajada del Agrio locality in the central part of the Neuquén Basin, Argentina. Six sandy facies, three heterolithic facies, three muddy facies and four calcareous facies were recognized. From facies analysis, three facies associations could be determined, corresponding to offshore/prodelta, distal ramp delta and proximal ramp delta. The three stratigraphic sections discussed in this study are internally composed of several small-scale sequences showing a coarsening and thickening upward pattern, transitionally going from muddy to sandy wave-dominated facies, and ending with calcareous bioclastics levels on top. These small-scale sequences are interpreted as delta front deposits of wave-influenced hyperpycnal littoral deltas, punctuated by calcareous intervals accumulated during periods of low sediment supply. It is interpreted that the development of hyperpycnal littoral deltas could have been facilitated by a decrease in sea water salinity related to an increasing runoff.
Fil: Irastorza, Ainara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Perez Zavala, Carlos Eduardo. Gcs Argentina Srl; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Campetella, Débora Mical. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Turienzo, Martin Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Peralta, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Irastorza, Maite. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Martz, Paula Anabela. Universidad Nacional del Sur; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
description Recent advances in the understanding of deltaic deposits provide new tools for the study and analysis of deltaic deposits in shallow epicontinental seas. After the introduction of sequence stratigraphic concepts, meter-scale coarsening and thickening upward successions have been considered as ?parasequences? originated by high-frequency sea-level changes. Nevertheless, recent studies enhanced the importance of wave-aided low-dense hyperpycnal flows in transporting fine-grained sediments in shallow shelfal areas. These poorly-known (and at the same time very common) types of delta, known as hyperpycnal littoral deltas (HLD), develop very low gradient progradational units, controlled by changes in the sediment supply instead of sea level changes. These small-scale progradational units are very common in shallow epicontinental seas like the Lower Cretaceous Agrio Formation in the Neuquén Basin. This study provides a first detailed analysis of hyperpycnal littoral deltas from the Agua de la Mula Member (upper Hauterivian?lower Barremian) of the Agrio Formation. This unit has been studied in three locations near Bajada del Agrio locality in the central part of the Neuquén Basin, Argentina. Six sandy facies, three heterolithic facies, three muddy facies and four calcareous facies were recognized. From facies analysis, three facies associations could be determined, corresponding to offshore/prodelta, distal ramp delta and proximal ramp delta. The three stratigraphic sections discussed in this study are internally composed of several small-scale sequences showing a coarsening and thickening upward pattern, transitionally going from muddy to sandy wave-dominated facies, and ending with calcareous bioclastics levels on top. These small-scale sequences are interpreted as delta front deposits of wave-influenced hyperpycnal littoral deltas, punctuated by calcareous intervals accumulated during periods of low sediment supply. It is interpreted that the development of hyperpycnal littoral deltas could have been facilitated by a decrease in sea water salinity related to an increasing runoff.
publishDate 2021
dc.date.none.fl_str_mv 2021-11-13
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/11336/161635
Irastorza, Ainara; Perez Zavala, Carlos Eduardo; Campetella, Débora Mical; Turienzo, Martin Miguel; Olivera, Daniela Elizabeth; et al.; Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina; Elsevier; Journal of Palaeogeography; 10; 4; 13-11-2021; 550-570
2095-3836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/161635
identifier_str_mv Irastorza, Ainara; Perez Zavala, Carlos Eduardo; Campetella, Débora Mical; Turienzo, Martin Miguel; Olivera, Daniela Elizabeth; et al.; Hyperpycnal littoral deltas: a case of study from the Lower Cretaceous Agrio Formation in the Neuquén Basin, Argentina; Elsevier; Journal of Palaeogeography; 10; 4; 13-11-2021; 550-570
2095-3836
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://www.sciencedirect.com/science/article/pii/S2095383621000079
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.1016/j.jop.2021.11.004
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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
_version_ 1846082889650798592
score 13.22299

Publicaciones similares