Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)

Autores
Cejudo Ruiz, Ruben; Goguitchaichvili, Avto; Geuna, Silvana Evangelina; Alva Valdivia, Luis M.; Solé, Jesus; Morales, Juan
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma. Twenty five samples from 7 individual flows yielded acceptable paleointensity estimates. The mean paleointensity values per flow are ranging from 53.0±1.9 to 25.4±2.6 μT and the corresponding Virtual Dipole Moments (VDMs) are ranging from 9.3±1.3 to 4.6±0.5 (1022 Am2). This corresponds to the mean value of 7.3±1.7x1022 Am2, which is compatible to the present geomagnetic axial dipole. Currently available selected paleointensity data from 80 to 130 Ma suggest that geomagnetic field strength frequently fluctuated before and during the Cretaceous Normal Superchron while the magnetic polarity maintained stable. The mean paleointensities derived from Cordoba lavas agree remarkably well with those obtained from the Parana Magmatic Province (133-132 Ma). This reinforces the hypothesis about the unreliability of ‘Mesozoic Dipole Low'.
Fil: Cejudo Ruiz, Ruben. Universidad Nacional Autónoma de México; México
Fil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; México
Fil: Geuna, Silvana Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Alva Valdivia, Luis M.. Universidad Nacional Autónoma de México; México
Fil: Solé, Jesus. Universidad Nacional Autónoma de México; México
Fil: Morales, Juan. Universidad Nacional Autónoma de México; México
Materia
Early Cretaceous
Paleointensity
Rock-Magnetism
South America
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78957
Acceder
id CONICETDig_5805659c3bd8492c4352a4411db9351f
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)Cejudo Ruiz, RubenGoguitchaichvili, AvtoGeuna, Silvana EvangelinaAlva Valdivia, Luis M.Solé, JesusMorales, JuanEarly CretaceousPaleointensityRock-MagnetismSouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We present here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma. Twenty five samples from 7 individual flows yielded acceptable paleointensity estimates. The mean paleointensity values per flow are ranging from 53.0±1.9 to 25.4±2.6 μT and the corresponding Virtual Dipole Moments (VDMs) are ranging from 9.3±1.3 to 4.6±0.5 (1022 Am2). This corresponds to the mean value of 7.3±1.7x1022 Am2, which is compatible to the present geomagnetic axial dipole. Currently available selected paleointensity data from 80 to 130 Ma suggest that geomagnetic field strength frequently fluctuated before and during the Cretaceous Normal Superchron while the magnetic polarity maintained stable. The mean paleointensities derived from Cordoba lavas agree remarkably well with those obtained from the Parana Magmatic Province (133-132 Ma). This reinforces the hypothesis about the unreliability of ‘Mesozoic Dipole Low'.Fil: Cejudo Ruiz, Ruben. Universidad Nacional Autónoma de México; MéxicoFil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; MéxicoFil: Geuna, Silvana Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Alva Valdivia, Luis M.. Universidad Nacional Autónoma de México; MéxicoFil: Solé, Jesus. Universidad Nacional Autónoma de México; MéxicoFil: Morales, Juan. Universidad Nacional Autónoma de México; MéxicoSpringer Verlag Berlín2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78957Cejudo Ruiz, Ruben; Goguitchaichvili, Avto; Geuna, Silvana Evangelina; Alva Valdivia, Luis M.; Solé, Jesus; et al.; Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina); Springer Verlag Berlín; Earth, Planets and Space; 58; 10; 12-2006; 1333-13391343-88321880-5981CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1186/BF03352629info:eu-repo/semantics/altIdentifier/doi/10.1186/BF03352629info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:51:30Zoai:ri.conicet.gov.ar:11336/78957instacron: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 09:51:31.08CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
title Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
spellingShingle Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
Cejudo Ruiz, Ruben
Early Cretaceous
Paleointensity
Rock-Magnetism
South America
title_short Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
title_full Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
title_fullStr Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
title_full_unstemmed Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
title_sort Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina)
dc.creator.none.fl_str_mv Cejudo Ruiz, Ruben
Goguitchaichvili, Avto
Geuna, Silvana Evangelina
Alva Valdivia, Luis M.
Solé, Jesus
Morales, Juan
author Cejudo Ruiz, Ruben
author_facet Cejudo Ruiz, Ruben
Goguitchaichvili, Avto
Geuna, Silvana Evangelina
Alva Valdivia, Luis M.
Solé, Jesus
Morales, Juan
author_role author
author2 Goguitchaichvili, Avto
Geuna, Silvana Evangelina
Alva Valdivia, Luis M.
Solé, Jesus
Morales, Juan
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Early Cretaceous
Paleointensity
Rock-Magnetism
South America
topic Early Cretaceous
Paleointensity
Rock-Magnetism
South America
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 here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma. Twenty five samples from 7 individual flows yielded acceptable paleointensity estimates. The mean paleointensity values per flow are ranging from 53.0±1.9 to 25.4±2.6 μT and the corresponding Virtual Dipole Moments (VDMs) are ranging from 9.3±1.3 to 4.6±0.5 (1022 Am2). This corresponds to the mean value of 7.3±1.7x1022 Am2, which is compatible to the present geomagnetic axial dipole. Currently available selected paleointensity data from 80 to 130 Ma suggest that geomagnetic field strength frequently fluctuated before and during the Cretaceous Normal Superchron while the magnetic polarity maintained stable. The mean paleointensities derived from Cordoba lavas agree remarkably well with those obtained from the Parana Magmatic Province (133-132 Ma). This reinforces the hypothesis about the unreliability of ‘Mesozoic Dipole Low'.
Fil: Cejudo Ruiz, Ruben. Universidad Nacional Autónoma de México; México
Fil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; México
Fil: Geuna, Silvana Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Alva Valdivia, Luis M.. Universidad Nacional Autónoma de México; México
Fil: Solé, Jesus. Universidad Nacional Autónoma de México; México
Fil: Morales, Juan. Universidad Nacional Autónoma de México; México
description We present here new paleointensity and geochronology results from Early Cretaceous volcanic rocks of Sierra Chica de Cordoba (Argentina). The new K-Ar isotopic ages of 5 samples range from 136 to 122 Ma. Twenty five samples from 7 individual flows yielded acceptable paleointensity estimates. The mean paleointensity values per flow are ranging from 53.0±1.9 to 25.4±2.6 μT and the corresponding Virtual Dipole Moments (VDMs) are ranging from 9.3±1.3 to 4.6±0.5 (1022 Am2). This corresponds to the mean value of 7.3±1.7x1022 Am2, which is compatible to the present geomagnetic axial dipole. Currently available selected paleointensity data from 80 to 130 Ma suggest that geomagnetic field strength frequently fluctuated before and during the Cretaceous Normal Superchron while the magnetic polarity maintained stable. The mean paleointensities derived from Cordoba lavas agree remarkably well with those obtained from the Parana Magmatic Province (133-132 Ma). This reinforces the hypothesis about the unreliability of ‘Mesozoic Dipole Low'.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
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/11336/78957
Cejudo Ruiz, Ruben; Goguitchaichvili, Avto; Geuna, Silvana Evangelina; Alva Valdivia, Luis M.; Solé, Jesus; et al.; Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina); Springer Verlag Berlín; Earth, Planets and Space; 58; 10; 12-2006; 1333-1339
1343-8832
1880-5981
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78957
identifier_str_mv Cejudo Ruiz, Ruben; Goguitchaichvili, Avto; Geuna, Silvana Evangelina; Alva Valdivia, Luis M.; Solé, Jesus; et al.; Early cretaceous absolute geomagnetic paleointensities from Córdoba Province (Argentina); Springer Verlag Berlín; Earth, Planets and Space; 58; 10; 12-2006; 1333-1339
1343-8832
1880-5981
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://link.springer.com/article/10.1186/BF03352629
info:eu-repo/semantics/altIdentifier/doi/10.1186/BF03352629
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag Berlín
publisher.none.fl_str_mv Springer Verlag Berlín
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_ 1842269099504173056
score 13.13397

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