New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere

Autores
Lescano, Marina Aurora; Vennari, Verónica Vanesa; López Martínez, Rafael; Concheyro, Graciela; Aguirre Urreta, María Beatriz; Pellenard, Pierre; Martinez, Mathieu
Año de publicación
2022
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
We present new biostratigraphic data provided by ammonites, calcareous nannofossils, and calpionellids from Las Alcantarillas, a 127 m-thick section from the Neuquén Basin, western Argentina. The combined biostratigraphic information of these fossil groups enables to accurately correlate our findings from the Andes with the current Tithonian biozones-scheme of the Western Mediterranean Province of theTethyan Realm. The biostratighaphic records show that the early Tithonian calcareous nannofossil NJT 15 Zone correlates with the early Tithonian V. andesensis, P. zitteli, A. proximus, and W. internispinosum ammonite Zones, while its upper part correlates with the Chitinoidella calpionellid Zone. In the studied section, the lower/upper Tithonian boundary is defined by the base of the Crassicollaria calpionellid Zone, which is close to the base of the NJT 16 nannofossil Zone and to the base of the upper Tithonian Corongoceras alternans ammonite Zone. Levels assigned to the NJT17 nannofossil Zone (upper Tithonian) are recognized and correlated with the upper part of the Crassicollaria calpionellid Zone and with the Substeueroceras koeneni ammonite Zone. So far, it has not been possible to define accurately the Jurassic/Cretaceous boundary in Las Alcantarillas. However, in the upper levels of the section, the Argentiniceras noduliferum and the Spiticeras damesi ammonite Zones, traditionally assigned to the Berriasian, have been identified. In addition to the paleontological analyses, bulk-rocks were sampled every 6 cm to measure magnetic susceptibility and δ13Corg, and tuff layers were sampled to obtain precise absolute ages on U-Pb zircons. An astrochronological framework has been obtained from the spectral analyses on magnetic susceptibility, which was integrated to the radiochronology results from the zircons. The high-resolution (every ~20 ka) δ 13Corg curve, the first of its kind obtained in the Neuquén Basin, will help in the global correlation of the Andean Late Jurassic and add a new perspective in the understanding of the stratigraphic distribution of its fossil associations.
Fil: Lescano, Marina Aurora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Vennari, Verónica Vanesa. Universidad Tecnológica Nacional. Facultad Regional San Rafael. Instituto de Evolución, Ecología Histórica y Ambiente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Evolución, Ecología Histórica y Ambiente; Argentina
Fil: López Martínez, Rafael. Universidad Nacional Autónoma de México. Instituto de Geología; México
Fil: Concheyro, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Aguirre Urreta, María Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Pellenard, Pierre. Universite de Bourgogne; Francia
Fil: Martinez, Mathieu. Université de Rennes I. Institut des Sciences Chimiques de Rennes; Francia
11th International Congress on the Jurassic System
Budapest
Hungría
Eötvös Loránd University
Materia
Jurassic
Tithonian
Biostratigraphy
Argentina
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:11336/229473
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphereLescano, Marina AuroraVennari, Verónica VanesaLópez Martínez, RafaelConcheyro, GracielaAguirre Urreta, María BeatrizPellenard, PierreMartinez, MathieuJurassicTithonianBiostratigraphyArgentinahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We present new biostratigraphic data provided by ammonites, calcareous nannofossils, and calpionellids from Las Alcantarillas, a 127 m-thick section from the Neuquén Basin, western Argentina. The combined biostratigraphic information of these fossil groups enables to accurately correlate our findings from the Andes with the current Tithonian biozones-scheme of the Western Mediterranean Province of theTethyan Realm. The biostratighaphic records show that the early Tithonian calcareous nannofossil NJT 15 Zone correlates with the early Tithonian V. andesensis, P. zitteli, A. proximus, and W. internispinosum ammonite Zones, while its upper part correlates with the Chitinoidella calpionellid Zone. In the studied section, the lower/upper Tithonian boundary is defined by the base of the Crassicollaria calpionellid Zone, which is close to the base of the NJT 16 nannofossil Zone and to the base of the upper Tithonian Corongoceras alternans ammonite Zone. Levels assigned to the NJT17 nannofossil Zone (upper Tithonian) are recognized and correlated with the upper part of the Crassicollaria calpionellid Zone and with the Substeueroceras koeneni ammonite Zone. So far, it has not been possible to define accurately the Jurassic/Cretaceous boundary in Las Alcantarillas. However, in the upper levels of the section, the Argentiniceras noduliferum and the Spiticeras damesi ammonite Zones, traditionally assigned to the Berriasian, have been identified. In addition to the paleontological analyses, bulk-rocks were sampled every 6 cm to measure magnetic susceptibility and δ13Corg, and tuff layers were sampled to obtain precise absolute ages on U-Pb zircons. An astrochronological framework has been obtained from the spectral analyses on magnetic susceptibility, which was integrated to the radiochronology results from the zircons. The high-resolution (every ~20 ka) δ 13Corg curve, the first of its kind obtained in the Neuquén Basin, will help in the global correlation of the Andean Late Jurassic and add a new perspective in the understanding of the stratigraphic distribution of its fossil associations.Fil: Lescano, Marina Aurora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Vennari, Verónica Vanesa. Universidad Tecnológica Nacional. Facultad Regional San Rafael. Instituto de Evolución, Ecología Histórica y Ambiente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Evolución, Ecología Histórica y Ambiente; ArgentinaFil: López Martínez, Rafael. Universidad Nacional Autónoma de México. Instituto de Geología; MéxicoFil: Concheyro, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Aguirre Urreta, María Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Pellenard, Pierre. Universite de Bourgogne; FranciaFil: Martinez, Mathieu. Université de Rennes I. Institut des Sciences Chimiques de Rennes; Francia11th International Congress on the Jurassic SystemBudapestHungríaEötvös Loránd UniversityEötvös Loránd University2022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/229473New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere; 11th International Congress on the Jurassic System; Budapest; Hungría; 2022; 1-1978-615-5270-71-0CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://jurassic2022.hu/download/JURA2022_AbstractBook_web.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:00:05Zoai:ri.conicet.gov.ar:11336/229473instacron: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:34982025-09-10 13:00:05.745CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
title New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
spellingShingle New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
Lescano, Marina Aurora
Jurassic
Tithonian
Biostratigraphy
Argentina
title_short New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
title_full New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
title_fullStr New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
title_full_unstemmed New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
title_sort New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere
dc.creator.none.fl_str_mv Lescano, Marina Aurora
Vennari, Verónica Vanesa
López Martínez, Rafael
Concheyro, Graciela
Aguirre Urreta, María Beatriz
Pellenard, Pierre
Martinez, Mathieu
author Lescano, Marina Aurora
author_facet Lescano, Marina Aurora
Vennari, Verónica Vanesa
López Martínez, Rafael
Concheyro, Graciela
Aguirre Urreta, María Beatriz
Pellenard, Pierre
Martinez, Mathieu
author_role author
author2 Vennari, Verónica Vanesa
López Martínez, Rafael
Concheyro, Graciela
Aguirre Urreta, María Beatriz
Pellenard, Pierre
Martinez, Mathieu
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Jurassic
Tithonian
Biostratigraphy
Argentina
topic Jurassic
Tithonian
Biostratigraphy
Argentina
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present new biostratigraphic data provided by ammonites, calcareous nannofossils, and calpionellids from Las Alcantarillas, a 127 m-thick section from the Neuquén Basin, western Argentina. The combined biostratigraphic information of these fossil groups enables to accurately correlate our findings from the Andes with the current Tithonian biozones-scheme of the Western Mediterranean Province of theTethyan Realm. The biostratighaphic records show that the early Tithonian calcareous nannofossil NJT 15 Zone correlates with the early Tithonian V. andesensis, P. zitteli, A. proximus, and W. internispinosum ammonite Zones, while its upper part correlates with the Chitinoidella calpionellid Zone. In the studied section, the lower/upper Tithonian boundary is defined by the base of the Crassicollaria calpionellid Zone, which is close to the base of the NJT 16 nannofossil Zone and to the base of the upper Tithonian Corongoceras alternans ammonite Zone. Levels assigned to the NJT17 nannofossil Zone (upper Tithonian) are recognized and correlated with the upper part of the Crassicollaria calpionellid Zone and with the Substeueroceras koeneni ammonite Zone. So far, it has not been possible to define accurately the Jurassic/Cretaceous boundary in Las Alcantarillas. However, in the upper levels of the section, the Argentiniceras noduliferum and the Spiticeras damesi ammonite Zones, traditionally assigned to the Berriasian, have been identified. In addition to the paleontological analyses, bulk-rocks were sampled every 6 cm to measure magnetic susceptibility and δ13Corg, and tuff layers were sampled to obtain precise absolute ages on U-Pb zircons. An astrochronological framework has been obtained from the spectral analyses on magnetic susceptibility, which was integrated to the radiochronology results from the zircons. The high-resolution (every ~20 ka) δ 13Corg curve, the first of its kind obtained in the Neuquén Basin, will help in the global correlation of the Andean Late Jurassic and add a new perspective in the understanding of the stratigraphic distribution of its fossil associations.
Fil: Lescano, Marina Aurora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Vennari, Verónica Vanesa. Universidad Tecnológica Nacional. Facultad Regional San Rafael. Instituto de Evolución, Ecología Histórica y Ambiente. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Evolución, Ecología Histórica y Ambiente; Argentina
Fil: López Martínez, Rafael. Universidad Nacional Autónoma de México. Instituto de Geología; México
Fil: Concheyro, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Aguirre Urreta, María Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Pellenard, Pierre. Universite de Bourgogne; Francia
Fil: Martinez, Mathieu. Université de Rennes I. Institut des Sciences Chimiques de Rennes; Francia
11th International Congress on the Jurassic System
Budapest
Hungría
Eötvös Loránd University
description We present new biostratigraphic data provided by ammonites, calcareous nannofossils, and calpionellids from Las Alcantarillas, a 127 m-thick section from the Neuquén Basin, western Argentina. The combined biostratigraphic information of these fossil groups enables to accurately correlate our findings from the Andes with the current Tithonian biozones-scheme of the Western Mediterranean Province of theTethyan Realm. The biostratighaphic records show that the early Tithonian calcareous nannofossil NJT 15 Zone correlates with the early Tithonian V. andesensis, P. zitteli, A. proximus, and W. internispinosum ammonite Zones, while its upper part correlates with the Chitinoidella calpionellid Zone. In the studied section, the lower/upper Tithonian boundary is defined by the base of the Crassicollaria calpionellid Zone, which is close to the base of the NJT 16 nannofossil Zone and to the base of the upper Tithonian Corongoceras alternans ammonite Zone. Levels assigned to the NJT17 nannofossil Zone (upper Tithonian) are recognized and correlated with the upper part of the Crassicollaria calpionellid Zone and with the Substeueroceras koeneni ammonite Zone. So far, it has not been possible to define accurately the Jurassic/Cretaceous boundary in Las Alcantarillas. However, in the upper levels of the section, the Argentiniceras noduliferum and the Spiticeras damesi ammonite Zones, traditionally assigned to the Berriasian, have been identified. In addition to the paleontological analyses, bulk-rocks were sampled every 6 cm to measure magnetic susceptibility and δ13Corg, and tuff layers were sampled to obtain precise absolute ages on U-Pb zircons. An astrochronological framework has been obtained from the spectral analyses on magnetic susceptibility, which was integrated to the radiochronology results from the zircons. The high-resolution (every ~20 ka) δ 13Corg curve, the first of its kind obtained in the Neuquén Basin, will help in the global correlation of the Andean Late Jurassic and add a new perspective in the understanding of the stratigraphic distribution of its fossil associations.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
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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/11336/229473
New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere; 11th International Congress on the Jurassic System; Budapest; Hungría; 2022; 1-1
978-615-5270-71-0
CONICET Digital
CONICET
url http://hdl.handle.net/11336/229473
identifier_str_mv New tithonian biostratigraphic data from the Neuquén Basin, Argentine Andes: a contribution from the southern hemisphere; 11th International Congress on the Jurassic System; Budapest; Hungría; 2022; 1-1
978-615-5270-71-0
CONICET Digital
CONICET
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language eng
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Eötvös Loránd University
publisher.none.fl_str_mv Eötvös Loránd University
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