Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile

Autores
Sial, A. N.; Ferreira, V. P.; Toselli, Alejandro Jose; Parada, Marcela Alejandra; Aceñolaza, Florencio Gilberto; Pimentel, M. M.; Alonso, Ricardo Narciso
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Cretaceous-Paleocene (K-T) transition has been recorded in sedimentary carbonate rocks in northwestern Argentina and southern Chile. In the Yacoraite Basin, Argentina, this transition has been preserved in a 2 m thick marly layer, at the base of the Tunal Formation, which overlies lacustrine/marine carbonates of the Yacoraite Formation (Cabra Corral dam). The K-T transition is also preserved at Maimara, where Tertiary sandstones overlie a 50 m thick limestone bed of the Yacoraite Formation. In the Magellan Basin, Chile, glauconitic sandstones with calcitic cement and limestone concretions of the Maastrichtian Punta Rocallosa Formation are overlain by sandstones, claystones, and limestones of the Chorillo Chico Formation. The K-T transition is preserved in the lower portion of the Chorillo Chico Formation. Carbonates of the Yacoraite Formation display bulk-rock δ13C values from +1 to +2‰ PDB, with a negative incursion (−4‰ PDB) at the K-T transition. δ13C values in the Tunal Formation marls vary from −3 to −1‰ PDB. At Rocallosa Point, δ13C values in limestone strata, calcite cement, and limestone concretions vary from −4 to −33 ‰ PDB, and the lowest value in the Chorillo Chico Formation apparently marks the K-T transition. The δ18O fluctuations in the Yacoraite and Magellan carbonate rocks suggest a temperature drop at the K-T transition, followed by a temperature rise. High 87Sr/86Sr ratios (0.7140-0.7156) characterize the studied profiles of the Yacoraite Formation, documenting an important 87Sr-enriched source of Sr to the water from which these carbonates precipitated. At the Magellan basin, 87Sr/86Sr ratios are closer to the expected values for the global Late Cretaceous-Paleocene ocean.
Fil: Sial, A. N.. Universidade Federal de Pernambuco; Brasil
Fil: Ferreira, V. P.. Universidade Federal de Pernambuco; Brasil
Fil: Toselli, Alejandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Parada, Marcela Alejandra. Universidad de Chile; Chile
Fil: Aceñolaza, Florencio Gilberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Pimentel, M. M.. Universidade do Brasília; Brasil
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; Argentina
Materia
ISOTOPES
CARBON
CRETACEOUS
ANDES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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Consejo Nacional de Investigaciones Científicas y Técnicas
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oai:ri.conicet.gov.ar:11336/128972
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network_name_str CONICET Digital (CONICET)
spelling Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chileSial, A. N.Ferreira, V. P.Toselli, Alejandro JoseParada, Marcela AlejandraAceñolaza, Florencio GilbertoPimentel, M. M.Alonso, Ricardo NarcisoISOTOPESCARBONCRETACEOUSANDEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Cretaceous-Paleocene (K-T) transition has been recorded in sedimentary carbonate rocks in northwestern Argentina and southern Chile. In the Yacoraite Basin, Argentina, this transition has been preserved in a 2 m thick marly layer, at the base of the Tunal Formation, which overlies lacustrine/marine carbonates of the Yacoraite Formation (Cabra Corral dam). The K-T transition is also preserved at Maimara, where Tertiary sandstones overlie a 50 m thick limestone bed of the Yacoraite Formation. In the Magellan Basin, Chile, glauconitic sandstones with calcitic cement and limestone concretions of the Maastrichtian Punta Rocallosa Formation are overlain by sandstones, claystones, and limestones of the Chorillo Chico Formation. The K-T transition is preserved in the lower portion of the Chorillo Chico Formation. Carbonates of the Yacoraite Formation display bulk-rock δ13C values from +1 to +2‰ PDB, with a negative incursion (−4‰ PDB) at the K-T transition. δ13C values in the Tunal Formation marls vary from −3 to −1‰ PDB. At Rocallosa Point, δ13C values in limestone strata, calcite cement, and limestone concretions vary from −4 to −33 ‰ PDB, and the lowest value in the Chorillo Chico Formation apparently marks the K-T transition. The δ18O fluctuations in the Yacoraite and Magellan carbonate rocks suggest a temperature drop at the K-T transition, followed by a temperature rise. High 87Sr/86Sr ratios (0.7140-0.7156) characterize the studied profiles of the Yacoraite Formation, documenting an important 87Sr-enriched source of Sr to the water from which these carbonates precipitated. At the Magellan basin, 87Sr/86Sr ratios are closer to the expected values for the global Late Cretaceous-Paleocene ocean.Fil: Sial, A. N.. Universidade Federal de Pernambuco; BrasilFil: Ferreira, V. P.. Universidade Federal de Pernambuco; BrasilFil: Toselli, Alejandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Parada, Marcela Alejandra. Universidad de Chile; ChileFil: Aceñolaza, Florencio Gilberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Pimentel, M. M.. Universidade do Brasília; BrasilFil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaTaylor & Francis2001-01-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/128972Sial, A. N.; Ferreira, V. P.; Toselli, Alejandro Jose; Parada, Marcela Alejandra; Aceñolaza, Florencio Gilberto; et al.; Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile; Taylor & Francis; International Geology Review; 43; 10; 6-1-2001; 892-9090020-6814CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/00206810109465054info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00206810109465054info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:35Zoai:ri.conicet.gov.ar:11336/128972instacron: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:34982025-09-03 10:02:36.199CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
title Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
spellingShingle Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
Sial, A. N.
ISOTOPES
CARBON
CRETACEOUS
ANDES
title_short Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
title_full Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
title_fullStr Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
title_full_unstemmed Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
title_sort Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile
dc.creator.none.fl_str_mv Sial, A. N.
Ferreira, V. P.
Toselli, Alejandro Jose
Parada, Marcela Alejandra
Aceñolaza, Florencio Gilberto
Pimentel, M. M.
Alonso, Ricardo Narciso
author Sial, A. N.
author_facet Sial, A. N.
Ferreira, V. P.
Toselli, Alejandro Jose
Parada, Marcela Alejandra
Aceñolaza, Florencio Gilberto
Pimentel, M. M.
Alonso, Ricardo Narciso
author_role author
author2 Ferreira, V. P.
Toselli, Alejandro Jose
Parada, Marcela Alejandra
Aceñolaza, Florencio Gilberto
Pimentel, M. M.
Alonso, Ricardo Narciso
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv ISOTOPES
CARBON
CRETACEOUS
ANDES
topic ISOTOPES
CARBON
CRETACEOUS
ANDES
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 Cretaceous-Paleocene (K-T) transition has been recorded in sedimentary carbonate rocks in northwestern Argentina and southern Chile. In the Yacoraite Basin, Argentina, this transition has been preserved in a 2 m thick marly layer, at the base of the Tunal Formation, which overlies lacustrine/marine carbonates of the Yacoraite Formation (Cabra Corral dam). The K-T transition is also preserved at Maimara, where Tertiary sandstones overlie a 50 m thick limestone bed of the Yacoraite Formation. In the Magellan Basin, Chile, glauconitic sandstones with calcitic cement and limestone concretions of the Maastrichtian Punta Rocallosa Formation are overlain by sandstones, claystones, and limestones of the Chorillo Chico Formation. The K-T transition is preserved in the lower portion of the Chorillo Chico Formation. Carbonates of the Yacoraite Formation display bulk-rock δ13C values from +1 to +2‰ PDB, with a negative incursion (−4‰ PDB) at the K-T transition. δ13C values in the Tunal Formation marls vary from −3 to −1‰ PDB. At Rocallosa Point, δ13C values in limestone strata, calcite cement, and limestone concretions vary from −4 to −33 ‰ PDB, and the lowest value in the Chorillo Chico Formation apparently marks the K-T transition. The δ18O fluctuations in the Yacoraite and Magellan carbonate rocks suggest a temperature drop at the K-T transition, followed by a temperature rise. High 87Sr/86Sr ratios (0.7140-0.7156) characterize the studied profiles of the Yacoraite Formation, documenting an important 87Sr-enriched source of Sr to the water from which these carbonates precipitated. At the Magellan basin, 87Sr/86Sr ratios are closer to the expected values for the global Late Cretaceous-Paleocene ocean.
Fil: Sial, A. N.. Universidade Federal de Pernambuco; Brasil
Fil: Ferreira, V. P.. Universidade Federal de Pernambuco; Brasil
Fil: Toselli, Alejandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Parada, Marcela Alejandra. Universidad de Chile; Chile
Fil: Aceñolaza, Florencio Gilberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Pimentel, M. M.. Universidade do Brasília; Brasil
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; Argentina
description The Cretaceous-Paleocene (K-T) transition has been recorded in sedimentary carbonate rocks in northwestern Argentina and southern Chile. In the Yacoraite Basin, Argentina, this transition has been preserved in a 2 m thick marly layer, at the base of the Tunal Formation, which overlies lacustrine/marine carbonates of the Yacoraite Formation (Cabra Corral dam). The K-T transition is also preserved at Maimara, where Tertiary sandstones overlie a 50 m thick limestone bed of the Yacoraite Formation. In the Magellan Basin, Chile, glauconitic sandstones with calcitic cement and limestone concretions of the Maastrichtian Punta Rocallosa Formation are overlain by sandstones, claystones, and limestones of the Chorillo Chico Formation. The K-T transition is preserved in the lower portion of the Chorillo Chico Formation. Carbonates of the Yacoraite Formation display bulk-rock δ13C values from +1 to +2‰ PDB, with a negative incursion (−4‰ PDB) at the K-T transition. δ13C values in the Tunal Formation marls vary from −3 to −1‰ PDB. At Rocallosa Point, δ13C values in limestone strata, calcite cement, and limestone concretions vary from −4 to −33 ‰ PDB, and the lowest value in the Chorillo Chico Formation apparently marks the K-T transition. The δ18O fluctuations in the Yacoraite and Magellan carbonate rocks suggest a temperature drop at the K-T transition, followed by a temperature rise. High 87Sr/86Sr ratios (0.7140-0.7156) characterize the studied profiles of the Yacoraite Formation, documenting an important 87Sr-enriched source of Sr to the water from which these carbonates precipitated. At the Magellan basin, 87Sr/86Sr ratios are closer to the expected values for the global Late Cretaceous-Paleocene ocean.
publishDate 2001
dc.date.none.fl_str_mv 2001-01-06
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/11336/128972
Sial, A. N.; Ferreira, V. P.; Toselli, Alejandro Jose; Parada, Marcela Alejandra; Aceñolaza, Florencio Gilberto; et al.; Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile; Taylor & Francis; International Geology Review; 43; 10; 6-1-2001; 892-909
0020-6814
CONICET Digital
CONICET
url http://hdl.handle.net/11336/128972
identifier_str_mv Sial, A. N.; Ferreira, V. P.; Toselli, Alejandro Jose; Parada, Marcela Alejandra; Aceñolaza, Florencio Gilberto; et al.; Carbon and oxygen isotope compositions of some upper cretaceous–paleocene sequences in argentina and chile; Taylor & Francis; International Geology Review; 43; 10; 6-1-2001; 892-909
0020-6814
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/00206810109465054
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00206810109465054
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 Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
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 13.13397

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