Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy

Autores
Gómez Samus, Mauro Leandro; Chimento, Nicolás Roberto; Löffler, J.; Rico, Y.; Sierra, Leonardo; Bidegain, Juan Carlos
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper aims to contribute to the stratigraphic and geochronological knowledge of the Neogene–Quaternary of the geologic province of Tandilia by doing lithostratigraphic, paleomagnetic and paleontological analyses. Four lithostratigraphic units have been recognized. The oldest (Late Miocene) constitutes a unit composed of colluvium deposits; it lays in erosional unconformity over the Neoproterozoic rocks. This unconformity is related to important events in the Andes during the Middle-Late Miocene. Over the oldest colluvial sediments, and placed in erosional unconformity, there are sediments assigned to the Barker Formation which are essentially fluvial deposits with a development of several paleosols. Owing to the fossil remains, this unit is assigned to the Montehermosan-Chapadmalalan Stage/Age, whereas the paleomagnetic record would correspond to C3A, Gilbert and Gauss chrons. So, the age is narrowed to the timespan 7.1–3.1 Ma (Late Miocene–Early Pliocene). The Vela Formation lays in erosional unconformity over the Barker Formation. It also has fluvial origin, while the youngest unit (Las Ánimas Formation) corresponds to loess. Both units provide normal polarity and were assigned to Brunhes chron (<0.78 Ma). The Vela Formation presents fossil remains from Bonaerian-Lujanian Stage/Age and belongs to the Middle Pleistocene. The hiatus between the Barker and Vela Formations seems to be considerable: it represents at least 2.6 million years. The reason for the lack of sedimentary records is still a matter of discussion. The deposition of Las Animas Formation seems to span the last 40,000 years. However, this could be linked to a major entrance of wind-carried sediments during dry periods, including the Last Glacial Maximum. The hiatus between the Vela and Las Ánimas Formations may have been over 100,000 years.
Fil: Gómez Samus, Mauro Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Laboratorio Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Chimento, Nicolás Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Löffler, J.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Montgomery Watson Harza; Argentina
Fil: Rico, Y.. Laboratorio Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Sierra, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires. Rectorado. Instituto de Hidrología de Llanuras - Sede Azul. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Hidrología de Llanuras - Sede Azul; Argentina
Fil: Bidegain, Juan Carlos. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Materia
Argentina
Hiatus
Late Cenozoic
Loess
Tandil
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:11336/45920
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/45920
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphyGómez Samus, Mauro LeandroChimento, Nicolás RobertoLöffler, J.Rico, Y.Sierra, LeonardoBidegain, Juan CarlosArgentinaHiatusLate CenozoicLoessTandilhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This paper aims to contribute to the stratigraphic and geochronological knowledge of the Neogene–Quaternary of the geologic province of Tandilia by doing lithostratigraphic, paleomagnetic and paleontological analyses. Four lithostratigraphic units have been recognized. The oldest (Late Miocene) constitutes a unit composed of colluvium deposits; it lays in erosional unconformity over the Neoproterozoic rocks. This unconformity is related to important events in the Andes during the Middle-Late Miocene. Over the oldest colluvial sediments, and placed in erosional unconformity, there are sediments assigned to the Barker Formation which are essentially fluvial deposits with a development of several paleosols. Owing to the fossil remains, this unit is assigned to the Montehermosan-Chapadmalalan Stage/Age, whereas the paleomagnetic record would correspond to C3A, Gilbert and Gauss chrons. So, the age is narrowed to the timespan 7.1–3.1 Ma (Late Miocene–Early Pliocene). The Vela Formation lays in erosional unconformity over the Barker Formation. It also has fluvial origin, while the youngest unit (Las Ánimas Formation) corresponds to loess. Both units provide normal polarity and were assigned to Brunhes chron (<0.78 Ma). The Vela Formation presents fossil remains from Bonaerian-Lujanian Stage/Age and belongs to the Middle Pleistocene. The hiatus between the Barker and Vela Formations seems to be considerable: it represents at least 2.6 million years. The reason for the lack of sedimentary records is still a matter of discussion. The deposition of Las Animas Formation seems to span the last 40,000 years. However, this could be linked to a major entrance of wind-carried sediments during dry periods, including the Last Glacial Maximum. The hiatus between the Vela and Las Ánimas Formations may have been over 100,000 years.Fil: Gómez Samus, Mauro Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Laboratorio Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Chimento, Nicolás Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Löffler, J.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Montgomery Watson Harza; ArgentinaFil: Rico, Y.. Laboratorio Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Sierra, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires. Rectorado. Instituto de Hidrología de Llanuras - Sede Azul. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Hidrología de Llanuras - Sede Azul; ArgentinaFil: Bidegain, Juan Carlos. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaServicio Publicaciones2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/45920Gómez Samus, Mauro Leandro; Chimento, Nicolás Roberto; Löffler, J.; Rico, Y.; Sierra, Leonardo; et al.; Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy; Servicio Publicaciones; Journal of Iberian Geology; 43; 4; 10-2017; 559-5811886-79951698-6180CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s41513-017-0037-zinfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs41513-017-0037-zinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:21:41Zoai:ri.conicet.gov.ar:11336/45920instacron: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 14:21:42.202CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
title Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
spellingShingle Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
Gómez Samus, Mauro Leandro
Argentina
Hiatus
Late Cenozoic
Loess
Tandil
title_short Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
title_full Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
title_fullStr Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
title_full_unstemmed Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
title_sort Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy
dc.creator.none.fl_str_mv Gómez Samus, Mauro Leandro
Chimento, Nicolás Roberto
Löffler, J.
Rico, Y.
Sierra, Leonardo
Bidegain, Juan Carlos
author Gómez Samus, Mauro Leandro
author_facet Gómez Samus, Mauro Leandro
Chimento, Nicolás Roberto
Löffler, J.
Rico, Y.
Sierra, Leonardo
Bidegain, Juan Carlos
author_role author
author2 Chimento, Nicolás Roberto
Löffler, J.
Rico, Y.
Sierra, Leonardo
Bidegain, Juan Carlos
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Argentina
Hiatus
Late Cenozoic
Loess
Tandil
topic Argentina
Hiatus
Late Cenozoic
Loess
Tandil
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper aims to contribute to the stratigraphic and geochronological knowledge of the Neogene–Quaternary of the geologic province of Tandilia by doing lithostratigraphic, paleomagnetic and paleontological analyses. Four lithostratigraphic units have been recognized. The oldest (Late Miocene) constitutes a unit composed of colluvium deposits; it lays in erosional unconformity over the Neoproterozoic rocks. This unconformity is related to important events in the Andes during the Middle-Late Miocene. Over the oldest colluvial sediments, and placed in erosional unconformity, there are sediments assigned to the Barker Formation which are essentially fluvial deposits with a development of several paleosols. Owing to the fossil remains, this unit is assigned to the Montehermosan-Chapadmalalan Stage/Age, whereas the paleomagnetic record would correspond to C3A, Gilbert and Gauss chrons. So, the age is narrowed to the timespan 7.1–3.1 Ma (Late Miocene–Early Pliocene). The Vela Formation lays in erosional unconformity over the Barker Formation. It also has fluvial origin, while the youngest unit (Las Ánimas Formation) corresponds to loess. Both units provide normal polarity and were assigned to Brunhes chron (<0.78 Ma). The Vela Formation presents fossil remains from Bonaerian-Lujanian Stage/Age and belongs to the Middle Pleistocene. The hiatus between the Barker and Vela Formations seems to be considerable: it represents at least 2.6 million years. The reason for the lack of sedimentary records is still a matter of discussion. The deposition of Las Animas Formation seems to span the last 40,000 years. However, this could be linked to a major entrance of wind-carried sediments during dry periods, including the Last Glacial Maximum. The hiatus between the Vela and Las Ánimas Formations may have been over 100,000 years.
Fil: Gómez Samus, Mauro Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Laboratorio Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Chimento, Nicolás Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Löffler, J.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Montgomery Watson Harza; Argentina
Fil: Rico, Y.. Laboratorio Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Sierra, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires. Rectorado. Instituto de Hidrología de Llanuras - Sede Azul. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Hidrología de Llanuras - Sede Azul; Argentina
Fil: Bidegain, Juan Carlos. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
description This paper aims to contribute to the stratigraphic and geochronological knowledge of the Neogene–Quaternary of the geologic province of Tandilia by doing lithostratigraphic, paleomagnetic and paleontological analyses. Four lithostratigraphic units have been recognized. The oldest (Late Miocene) constitutes a unit composed of colluvium deposits; it lays in erosional unconformity over the Neoproterozoic rocks. This unconformity is related to important events in the Andes during the Middle-Late Miocene. Over the oldest colluvial sediments, and placed in erosional unconformity, there are sediments assigned to the Barker Formation which are essentially fluvial deposits with a development of several paleosols. Owing to the fossil remains, this unit is assigned to the Montehermosan-Chapadmalalan Stage/Age, whereas the paleomagnetic record would correspond to C3A, Gilbert and Gauss chrons. So, the age is narrowed to the timespan 7.1–3.1 Ma (Late Miocene–Early Pliocene). The Vela Formation lays in erosional unconformity over the Barker Formation. It also has fluvial origin, while the youngest unit (Las Ánimas Formation) corresponds to loess. Both units provide normal polarity and were assigned to Brunhes chron (<0.78 Ma). The Vela Formation presents fossil remains from Bonaerian-Lujanian Stage/Age and belongs to the Middle Pleistocene. The hiatus between the Barker and Vela Formations seems to be considerable: it represents at least 2.6 million years. The reason for the lack of sedimentary records is still a matter of discussion. The deposition of Las Animas Formation seems to span the last 40,000 years. However, this could be linked to a major entrance of wind-carried sediments during dry periods, including the Last Glacial Maximum. The hiatus between the Vela and Las Ánimas Formations may have been over 100,000 years.
publishDate 2017
dc.date.none.fl_str_mv 2017-10
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/11336/45920
Gómez Samus, Mauro Leandro; Chimento, Nicolás Roberto; Löffler, J.; Rico, Y.; Sierra, Leonardo; et al.; Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy; Servicio Publicaciones; Journal of Iberian Geology; 43; 4; 10-2017; 559-581
1886-7995
1698-6180
CONICET Digital
CONICET
url http://hdl.handle.net/11336/45920
identifier_str_mv Gómez Samus, Mauro Leandro; Chimento, Nicolás Roberto; Löffler, J.; Rico, Y.; Sierra, Leonardo; et al.; Neogene–Quaternary in Tandilia, South America: litho- bio- magnetostratigraphy; Servicio Publicaciones; Journal of Iberian Geology; 43; 4; 10-2017; 559-581
1886-7995
1698-6180
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s41513-017-0037-z
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs41513-017-0037-z
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 Servicio Publicaciones
publisher.none.fl_str_mv Servicio Publicaciones
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 13.221938

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