High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia
- Autores
- Perez Loinaze, Valeria Susana; Vera, Ezequiel Ignacio; Passalia, Mauro Gabriel; Llorens, Magdalena; Friedman, Richard; Limarino, Carlos Oscar; Cesari, Silvia Nelida
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The Baqueró Group is one of the most relevant units regarding the study of the early diversification of angiosperms in South America. Whereas the age of the upper part of the Group, namely the Punta del Barco Formation, has been recently dated at 114.67 ± 0.18 Ma, the rest of the unit still lacks precise dating. In this contribution a CA-TIMS U–Pb zircon age of 118.23 ± 0.09 Ma for a tuff interlayered with fossiliferous rocks of the Anfiteatro de Ticó Formation (lower part of the Baqueró Group) is reported. This age constrains the duration of deposition of the Baqueró Group to approximately 4 Ma and provides new evidence for the age interpretation of the previously described angiosperm flora and associated pollen assemblages from this unit, until now interpreted as early Aptian or possibly Barremian in age. The Aptian age of the Baqueró Group allows a better comparison between the paleofloras from this southernmost region.
Fil: Perez Loinaze, Valeria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Passalia, Mauro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; Argentina
Fil: Llorens, Magdalena. Comision Nacional de Energiâa Atomica. Centro Atomico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Friedman, Richard. University Of British Columbia; Canadá
Fil: Limarino, Carlos Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Cesari, Silvia Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina - Materia
-
Cretaceous
Aptian
Palynology
Paleobotany - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/5366
Ver los metadatos del registro completo
id |
CONICETDig_e97012ebfe97e5f45b45239945768627 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/5366 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in PatagoniaPerez Loinaze, Valeria SusanaVera, Ezequiel IgnacioPassalia, Mauro GabrielLlorens, MagdalenaFriedman, RichardLimarino, Carlos OscarCesari, Silvia NelidaCretaceousAptianPalynologyPaleobotanyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Baqueró Group is one of the most relevant units regarding the study of the early diversification of angiosperms in South America. Whereas the age of the upper part of the Group, namely the Punta del Barco Formation, has been recently dated at 114.67 ± 0.18 Ma, the rest of the unit still lacks precise dating. In this contribution a CA-TIMS U–Pb zircon age of 118.23 ± 0.09 Ma for a tuff interlayered with fossiliferous rocks of the Anfiteatro de Ticó Formation (lower part of the Baqueró Group) is reported. This age constrains the duration of deposition of the Baqueró Group to approximately 4 Ma and provides new evidence for the age interpretation of the previously described angiosperm flora and associated pollen assemblages from this unit, until now interpreted as early Aptian or possibly Barremian in age. The Aptian age of the Baqueró Group allows a better comparison between the paleofloras from this southernmost region.Fil: Perez Loinaze, Valeria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaFil: Passalia, Mauro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; ArgentinaFil: Llorens, Magdalena. Comision Nacional de Energiâa Atomica. Centro Atomico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Friedman, Richard. University Of British Columbia; CanadáFil: Limarino, Carlos Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaFil: Cesari, Silvia Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaElsevier2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5366Perez Loinaze, Valeria Susana; Vera, Ezequiel Ignacio; Passalia, Mauro Gabriel; Llorens, Magdalena; Friedman, Richard; et al.; High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia; Elsevier; Journal of South American Earth Sciences; 48; 8-2013; 97-1050895-9811enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981113001193info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2013.08.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:07:17Zoai:ri.conicet.gov.ar:11336/5366instacron: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 13:07:18.263CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
title |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
spellingShingle |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia Perez Loinaze, Valeria Susana Cretaceous Aptian Palynology Paleobotany |
title_short |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
title_full |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
title_fullStr |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
title_full_unstemmed |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
title_sort |
High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia |
dc.creator.none.fl_str_mv |
Perez Loinaze, Valeria Susana Vera, Ezequiel Ignacio Passalia, Mauro Gabriel Llorens, Magdalena Friedman, Richard Limarino, Carlos Oscar Cesari, Silvia Nelida |
author |
Perez Loinaze, Valeria Susana |
author_facet |
Perez Loinaze, Valeria Susana Vera, Ezequiel Ignacio Passalia, Mauro Gabriel Llorens, Magdalena Friedman, Richard Limarino, Carlos Oscar Cesari, Silvia Nelida |
author_role |
author |
author2 |
Vera, Ezequiel Ignacio Passalia, Mauro Gabriel Llorens, Magdalena Friedman, Richard Limarino, Carlos Oscar Cesari, Silvia Nelida |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
Cretaceous Aptian Palynology Paleobotany |
topic |
Cretaceous Aptian Palynology Paleobotany |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The Baqueró Group is one of the most relevant units regarding the study of the early diversification of angiosperms in South America. Whereas the age of the upper part of the Group, namely the Punta del Barco Formation, has been recently dated at 114.67 ± 0.18 Ma, the rest of the unit still lacks precise dating. In this contribution a CA-TIMS U–Pb zircon age of 118.23 ± 0.09 Ma for a tuff interlayered with fossiliferous rocks of the Anfiteatro de Ticó Formation (lower part of the Baqueró Group) is reported. This age constrains the duration of deposition of the Baqueró Group to approximately 4 Ma and provides new evidence for the age interpretation of the previously described angiosperm flora and associated pollen assemblages from this unit, until now interpreted as early Aptian or possibly Barremian in age. The Aptian age of the Baqueró Group allows a better comparison between the paleofloras from this southernmost region. Fil: Perez Loinaze, Valeria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina Fil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina Fil: Passalia, Mauro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; Argentina Fil: Llorens, Magdalena. Comision Nacional de Energiâa Atomica. Centro Atomico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Friedman, Richard. University Of British Columbia; Canadá Fil: Limarino, Carlos Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina Fil: Cesari, Silvia Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina |
description |
The Baqueró Group is one of the most relevant units regarding the study of the early diversification of angiosperms in South America. Whereas the age of the upper part of the Group, namely the Punta del Barco Formation, has been recently dated at 114.67 ± 0.18 Ma, the rest of the unit still lacks precise dating. In this contribution a CA-TIMS U–Pb zircon age of 118.23 ± 0.09 Ma for a tuff interlayered with fossiliferous rocks of the Anfiteatro de Ticó Formation (lower part of the Baqueró Group) is reported. This age constrains the duration of deposition of the Baqueró Group to approximately 4 Ma and provides new evidence for the age interpretation of the previously described angiosperm flora and associated pollen assemblages from this unit, until now interpreted as early Aptian or possibly Barremian in age. The Aptian age of the Baqueró Group allows a better comparison between the paleofloras from this southernmost region. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-08 |
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/11336/5366 Perez Loinaze, Valeria Susana; Vera, Ezequiel Ignacio; Passalia, Mauro Gabriel; Llorens, Magdalena; Friedman, Richard; et al.; High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia; Elsevier; Journal of South American Earth Sciences; 48; 8-2013; 97-105 0895-9811 |
url |
http://hdl.handle.net/11336/5366 |
identifier_str_mv |
Perez Loinaze, Valeria Susana; Vera, Ezequiel Ignacio; Passalia, Mauro Gabriel; Llorens, Magdalena; Friedman, Richard; et al.; High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiospermdiversification in Patagonia; Elsevier; Journal of South American Earth Sciences; 48; 8-2013; 97-105 0895-9811 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981113001193 info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2013.08.005 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf 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_ |
1842980323360505856 |
score |
12.993085 |