Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)

Autores
Cervantes Solano, Miguel; Goguitchaichvili, Avto; Mena, Mabel; Alva Valdivia, Luis; Morales Contreras, Juan; Cejudo Ruiz, Rubén; López Loera, Héctor; Soler, Ana María; Urrutia Fucugauchi, Jaime
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study. The dikes are widely distributed over a large area, easy to access, and they record faithfully the geomagnetic field at the time of the eruption. Most of them are fresh and have been dated by K-Ar and Ar-Ar. Thermomagnetic experiments (low-field versus temperature curves) suggest low-Ti titanomagnetites as main remanence carriers, and their domain structure is characterised by a mixture of single-domain and multi-domain grains. Characteristic paleomagnetic directions are retrieved from 28 out of 29 sites (235 standard paleomagnetic cores). 17 sites show normal polarity, 10 sites show reverse polarity and one site shows an oblique direction, with negative inclination, separated 79° of the mean normal directions. The reversal test is positive at the 95% confidence level which ensures that the secondary remanent magnetizations were successfully removed and the sampling adequately averaged the palaeosecular variation. The paleosecular variation parameters values obtained in this study correlate with those determined for the Cretaceous Normal Superchron, between 125 to 84 Ma. The new paleomagnetic pole position (222.0° E, 88.1° S, N = 24, K = 35.68, A95 = 5.0°) agrees well (within uncertainties) with the reference poles determined from Besse and Courtillot (2002), and disagree with those reported in previous studies. The new results should be considered for estimating the Cretaceous paleomagnetic poles for stable South America.
Fil: Cervantes Solano, Miguel. Universidad Nacional Autónoma de México; México
Fil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; México
Fil: Mena, Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Alva Valdivia, Luis. Instituto Potosino de Investigación Científica y Tecnológica; México
Fil: Morales Contreras, Juan. Universidad Nacional Autónoma de México; México
Fil: Cejudo Ruiz, Rubén. Universidad Nacional Autónoma de México; México
Fil: López Loera, Héctor. Instituto Potosino de Investigación Científica y Tecnológica; México
Fil: Soler, Ana María. Instituto Potosino de Investigación Científica y Tecnológica; México
Fil: Urrutia Fucugauchi, Jaime. Universidad Nacional Autónoma de México; México
Materia
Ponta Grossa Dike Swarm
South America
Paleomagnetism
Cretaceous
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/20776
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/20776
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)Cervantes Solano, MiguelGoguitchaichvili, AvtoMena, MabelAlva Valdivia, LuisMorales Contreras, JuanCejudo Ruiz, RubénLópez Loera, HéctorSoler, Ana MaríaUrrutia Fucugauchi, JaimePonta Grossa Dike SwarmSouth AmericaPaleomagnetismCretaceoushttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study. The dikes are widely distributed over a large area, easy to access, and they record faithfully the geomagnetic field at the time of the eruption. Most of them are fresh and have been dated by K-Ar and Ar-Ar. Thermomagnetic experiments (low-field versus temperature curves) suggest low-Ti titanomagnetites as main remanence carriers, and their domain structure is characterised by a mixture of single-domain and multi-domain grains. Characteristic paleomagnetic directions are retrieved from 28 out of 29 sites (235 standard paleomagnetic cores). 17 sites show normal polarity, 10 sites show reverse polarity and one site shows an oblique direction, with negative inclination, separated 79° of the mean normal directions. The reversal test is positive at the 95% confidence level which ensures that the secondary remanent magnetizations were successfully removed and the sampling adequately averaged the palaeosecular variation. The paleosecular variation parameters values obtained in this study correlate with those determined for the Cretaceous Normal Superchron, between 125 to 84 Ma. The new paleomagnetic pole position (222.0° E, 88.1° S, N = 24, K = 35.68, A95 = 5.0°) agrees well (within uncertainties) with the reference poles determined from Besse and Courtillot (2002), and disagree with those reported in previous studies. The new results should be considered for estimating the Cretaceous paleomagnetic poles for stable South America.Fil: Cervantes Solano, Miguel. Universidad Nacional Autónoma de México; MéxicoFil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; MéxicoFil: Mena, Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Alva Valdivia, Luis. Instituto Potosino de Investigación Científica y Tecnológica; MéxicoFil: Morales Contreras, Juan. Universidad Nacional Autónoma de México; MéxicoFil: Cejudo Ruiz, Rubén. Universidad Nacional Autónoma de México; MéxicoFil: López Loera, Héctor. Instituto Potosino de Investigación Científica y Tecnológica; MéxicoFil: Soler, Ana María. Instituto Potosino de Investigación Científica y Tecnológica; MéxicoFil: Urrutia Fucugauchi, Jaime. Universidad Nacional Autónoma de México; MéxicoUniversidad Nacional Autónoma de México. Instituto de Geofísica2015-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20776Cervantes Solano, Miguel; Goguitchaichvili, Avto; Mena, Mabel; Alva Valdivia, Luis; Morales Contreras, Juan; et al.; Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil); Universidad Nacional Autónoma de México. Instituto de Geofísica; Geofísica Internacional; 54; 2; 5-2015; 167-1780016-7169CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.gi.2015.04.012info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0016716915000136info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:28Zoai:ri.conicet.gov.ar:11336/20776instacron: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 09:57:28.475CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
title Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
spellingShingle Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
Cervantes Solano, Miguel
Ponta Grossa Dike Swarm
South America
Paleomagnetism
Cretaceous
title_short Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
title_full Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
title_fullStr Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
title_full_unstemmed Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
title_sort Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)
dc.creator.none.fl_str_mv Cervantes Solano, Miguel
Goguitchaichvili, Avto
Mena, Mabel
Alva Valdivia, Luis
Morales Contreras, Juan
Cejudo Ruiz, Rubén
López Loera, Héctor
Soler, Ana María
Urrutia Fucugauchi, Jaime
author Cervantes Solano, Miguel
author_facet Cervantes Solano, Miguel
Goguitchaichvili, Avto
Mena, Mabel
Alva Valdivia, Luis
Morales Contreras, Juan
Cejudo Ruiz, Rubén
López Loera, Héctor
Soler, Ana María
Urrutia Fucugauchi, Jaime
author_role author
author2 Goguitchaichvili, Avto
Mena, Mabel
Alva Valdivia, Luis
Morales Contreras, Juan
Cejudo Ruiz, Rubén
López Loera, Héctor
Soler, Ana María
Urrutia Fucugauchi, Jaime
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ponta Grossa Dike Swarm
South America
Paleomagnetism
Cretaceous
topic Ponta Grossa Dike Swarm
South America
Paleomagnetism
Cretaceous
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study. The dikes are widely distributed over a large area, easy to access, and they record faithfully the geomagnetic field at the time of the eruption. Most of them are fresh and have been dated by K-Ar and Ar-Ar. Thermomagnetic experiments (low-field versus temperature curves) suggest low-Ti titanomagnetites as main remanence carriers, and their domain structure is characterised by a mixture of single-domain and multi-domain grains. Characteristic paleomagnetic directions are retrieved from 28 out of 29 sites (235 standard paleomagnetic cores). 17 sites show normal polarity, 10 sites show reverse polarity and one site shows an oblique direction, with negative inclination, separated 79° of the mean normal directions. The reversal test is positive at the 95% confidence level which ensures that the secondary remanent magnetizations were successfully removed and the sampling adequately averaged the palaeosecular variation. The paleosecular variation parameters values obtained in this study correlate with those determined for the Cretaceous Normal Superchron, between 125 to 84 Ma. The new paleomagnetic pole position (222.0° E, 88.1° S, N = 24, K = 35.68, A95 = 5.0°) agrees well (within uncertainties) with the reference poles determined from Besse and Courtillot (2002), and disagree with those reported in previous studies. The new results should be considered for estimating the Cretaceous paleomagnetic poles for stable South America.
Fil: Cervantes Solano, Miguel. Universidad Nacional Autónoma de México; México
Fil: Goguitchaichvili, Avto. Universidad Nacional Autónoma de México; México
Fil: Mena, Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Alva Valdivia, Luis. Instituto Potosino de Investigación Científica y Tecnológica; México
Fil: Morales Contreras, Juan. Universidad Nacional Autónoma de México; México
Fil: Cejudo Ruiz, Rubén. Universidad Nacional Autónoma de México; México
Fil: López Loera, Héctor. Instituto Potosino de Investigación Científica y Tecnológica; México
Fil: Soler, Ana María. Instituto Potosino de Investigación Científica y Tecnológica; México
Fil: Urrutia Fucugauchi, Jaime. Universidad Nacional Autónoma de México; México
description A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study. The dikes are widely distributed over a large area, easy to access, and they record faithfully the geomagnetic field at the time of the eruption. Most of them are fresh and have been dated by K-Ar and Ar-Ar. Thermomagnetic experiments (low-field versus temperature curves) suggest low-Ti titanomagnetites as main remanence carriers, and their domain structure is characterised by a mixture of single-domain and multi-domain grains. Characteristic paleomagnetic directions are retrieved from 28 out of 29 sites (235 standard paleomagnetic cores). 17 sites show normal polarity, 10 sites show reverse polarity and one site shows an oblique direction, with negative inclination, separated 79° of the mean normal directions. The reversal test is positive at the 95% confidence level which ensures that the secondary remanent magnetizations were successfully removed and the sampling adequately averaged the palaeosecular variation. The paleosecular variation parameters values obtained in this study correlate with those determined for the Cretaceous Normal Superchron, between 125 to 84 Ma. The new paleomagnetic pole position (222.0° E, 88.1° S, N = 24, K = 35.68, A95 = 5.0°) agrees well (within uncertainties) with the reference poles determined from Besse and Courtillot (2002), and disagree with those reported in previous studies. The new results should be considered for estimating the Cretaceous paleomagnetic poles for stable South America.
publishDate 2015
dc.date.none.fl_str_mv 2015-05
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/11336/20776
Cervantes Solano, Miguel; Goguitchaichvili, Avto; Mena, Mabel; Alva Valdivia, Luis; Morales Contreras, Juan; et al.; Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil); Universidad Nacional Autónoma de México. Instituto de Geofísica; Geofísica Internacional; 54; 2; 5-2015; 167-178
0016-7169
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20776
identifier_str_mv Cervantes Solano, Miguel; Goguitchaichvili, Avto; Mena, Mabel; Alva Valdivia, Luis; Morales Contreras, Juan; et al.; Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil); Universidad Nacional Autónoma de México. Instituto de Geofísica; Geofísica Internacional; 54; 2; 5-2015; 167-178
0016-7169
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gi.2015.04.012
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0016716915000136
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
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Instituto de Geofísica
publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Instituto de Geofísica
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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