87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)

Autores
Scasso, Roberto Adrian; McArthur, J. M.; del Río, Claudia Julia; Martinez, Sergio; Thirwall, M. F.
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
87Sr/86Sr analysis on calcitic shells of pectinids (Chlamys actinodes and Chesapecten crassus) and oysters (Ostrea sp.) shows that the 'Entrerriense' sequence belonging to the Puerto Madryn Formation, Valdés Península (Chubut), was deposited at about 10.0 ± 0.3 Ma. Thus, a middle Tortonian age is assigned to the sequence. Within the sequence, the pectinids better retain their original 87Sr/86Sr ratio, whilst the oysters are altered and yield older-than-real ages. The latter is the result of greater susceptibility to interaction with diagenetic fluids bearing Sr derived from the alteration of tuffaceous materials and volcanic rocks of intermediate and basic composition.
Fil: Scasso, Roberto Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: McArthur, J. M.. Colegio Universitario de Londres; Reino Unido
Fil: del Río, Claudia Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Martinez, Sergio. Universidad de la República; Uruguay
Fil: Thirwall, M. F.. University College London; Estados Unidos
Materia
COOL WATER CARBONATES
COQUINAS
ENTRERRIENSE
LATE MIOCENE
PATAGONIA; 87S./86SR
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:11336/137055
Acceder
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network_name_str CONICET Digital (CONICET)
spelling 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)Scasso, Roberto AdrianMcArthur, J. M.del Río, Claudia JuliaMartinez, SergioThirwall, M. F.COOL WATER CARBONATESCOQUINASENTRERRIENSELATE MIOCENEPATAGONIA; 87S./86SRhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/187Sr/86Sr analysis on calcitic shells of pectinids (Chlamys actinodes and Chesapecten crassus) and oysters (Ostrea sp.) shows that the 'Entrerriense' sequence belonging to the Puerto Madryn Formation, Valdés Península (Chubut), was deposited at about 10.0 ± 0.3 Ma. Thus, a middle Tortonian age is assigned to the sequence. Within the sequence, the pectinids better retain their original 87Sr/86Sr ratio, whilst the oysters are altered and yield older-than-real ages. The latter is the result of greater susceptibility to interaction with diagenetic fluids bearing Sr derived from the alteration of tuffaceous materials and volcanic rocks of intermediate and basic composition.Fil: Scasso, Roberto Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: McArthur, J. M.. Colegio Universitario de Londres; Reino UnidoFil: del Río, Claudia Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Martinez, Sergio. Universidad de la República; UruguayFil: Thirwall, M. F.. University College London; Estados UnidosPergamon-Elsevier Science Ltd2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/137055Scasso, Roberto Adrian; McArthur, J. M.; del Río, Claudia Julia; Martinez, Sergio; Thirwall, M. F.; 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 14; 3; 12-2001; 319-3290895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0895981101000323info:eu-repo/semantics/altIdentifier/doi/10.1016/S0895-9811(01)00032-3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:20Zoai:ri.conicet.gov.ar:11336/137055instacron: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:34982025-09-29 09:43:20.44CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
title 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
spellingShingle 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
Scasso, Roberto Adrian
COOL WATER CARBONATES
COQUINAS
ENTRERRIENSE
LATE MIOCENE
PATAGONIA; 87S./86SR
title_short 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
title_full 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
title_fullStr 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
title_full_unstemmed 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
title_sort 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina)
dc.creator.none.fl_str_mv Scasso, Roberto Adrian
McArthur, J. M.
del Río, Claudia Julia
Martinez, Sergio
Thirwall, M. F.
author Scasso, Roberto Adrian
author_facet Scasso, Roberto Adrian
McArthur, J. M.
del Río, Claudia Julia
Martinez, Sergio
Thirwall, M. F.
author_role author
author2 McArthur, J. M.
del Río, Claudia Julia
Martinez, Sergio
Thirwall, M. F.
author2_role author
author
author
author
dc.subject.none.fl_str_mv COOL WATER CARBONATES
COQUINAS
ENTRERRIENSE
LATE MIOCENE
PATAGONIA; 87S./86SR
topic COOL WATER CARBONATES
COQUINAS
ENTRERRIENSE
LATE MIOCENE
PATAGONIA; 87S./86SR
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 87Sr/86Sr analysis on calcitic shells of pectinids (Chlamys actinodes and Chesapecten crassus) and oysters (Ostrea sp.) shows that the 'Entrerriense' sequence belonging to the Puerto Madryn Formation, Valdés Península (Chubut), was deposited at about 10.0 ± 0.3 Ma. Thus, a middle Tortonian age is assigned to the sequence. Within the sequence, the pectinids better retain their original 87Sr/86Sr ratio, whilst the oysters are altered and yield older-than-real ages. The latter is the result of greater susceptibility to interaction with diagenetic fluids bearing Sr derived from the alteration of tuffaceous materials and volcanic rocks of intermediate and basic composition.
Fil: Scasso, Roberto Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: McArthur, J. M.. Colegio Universitario de Londres; Reino Unido
Fil: del Río, Claudia Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Martinez, Sergio. Universidad de la República; Uruguay
Fil: Thirwall, M. F.. University College London; Estados Unidos
description 87Sr/86Sr analysis on calcitic shells of pectinids (Chlamys actinodes and Chesapecten crassus) and oysters (Ostrea sp.) shows that the 'Entrerriense' sequence belonging to the Puerto Madryn Formation, Valdés Península (Chubut), was deposited at about 10.0 ± 0.3 Ma. Thus, a middle Tortonian age is assigned to the sequence. Within the sequence, the pectinids better retain their original 87Sr/86Sr ratio, whilst the oysters are altered and yield older-than-real ages. The latter is the result of greater susceptibility to interaction with diagenetic fluids bearing Sr derived from the alteration of tuffaceous materials and volcanic rocks of intermediate and basic composition.
publishDate 2001
dc.date.none.fl_str_mv 2001-12
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/11336/137055
Scasso, Roberto Adrian; McArthur, J. M.; del Río, Claudia Julia; Martinez, Sergio; Thirwall, M. F.; 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 14; 3; 12-2001; 319-329
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/137055
identifier_str_mv Scasso, Roberto Adrian; McArthur, J. M.; del Río, Claudia Julia; Martinez, Sergio; Thirwall, M. F.; 87Sr/86Sr late miocene age of fossil molluscs in the 'entrerriense' of the Valdés Peninsula (Chubut, Argentina); Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 14; 3; 12-2001; 319-329
0895-9811
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/abs/pii/S0895981101000323
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0895-9811(01)00032-3
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 Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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_ 1844613364544700417
score 13.070432

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