Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina

Autores
Vizan, Haroldo; Ixer, Robert; Turner, Peter; Cortes, Jose Maria; Cladera, Gerardo
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Different authors have highlighted a systematic disagreement between Late Carboniferous-Triassic paleomagnetic poles (PPs) for Gondwanaland and Laurasia when they are repositioned in a classical reconstruction prior to the breakup of Pangea A. This disagreement has been interpreted in geodynamic terms or as an evidence of non-dipole components of the geomagnetic field. Such analyses have been made using data on South American PPs published approximately 25 years ago and obtained using outdated methodologies. In this article, the authors present new Late Triassic paleomagnetic data from rocks that crop out in the Pre-Andean ranges (Precordillera) of Mendoza province (Argentina). Samples of different lithologies were taken from two limbs of a doubly plunging syncline, and several field tests of paleomagnetic stability were applied. The results indicate primary site mean directions that yield a PP with geographic coordinates and statistical parameters as follows: Lat.=76°S, Lon.=280°E, N=12, R=11.63, α95=8°, K=30.2. This PP agrees with mean PPs of Laurasia of similar ages in different models of Pangea A, indicating that the hypothesis of a dipolar paleomagnetic field could be valid for the Late Triassic.
Fil: Vizan, Haroldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Ixer, Robert. The University of Birmingham; Estados Unidos
Fil: Turner, Peter. The University of Birmingham; Estados Unidos
Fil: Cortes, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Cladera, Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Materia
Argentina
Late Triassic
Paleomagnetism
Pangea
Precordillera
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:11336/83508
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, ArgentinaVizan, HaroldoIxer, RobertTurner, PeterCortes, Jose MariaCladera, GerardoArgentinaLate TriassicPaleomagnetismPangeaPrecordillerahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Different authors have highlighted a systematic disagreement between Late Carboniferous-Triassic paleomagnetic poles (PPs) for Gondwanaland and Laurasia when they are repositioned in a classical reconstruction prior to the breakup of Pangea A. This disagreement has been interpreted in geodynamic terms or as an evidence of non-dipole components of the geomagnetic field. Such analyses have been made using data on South American PPs published approximately 25 years ago and obtained using outdated methodologies. In this article, the authors present new Late Triassic paleomagnetic data from rocks that crop out in the Pre-Andean ranges (Precordillera) of Mendoza province (Argentina). Samples of different lithologies were taken from two limbs of a doubly plunging syncline, and several field tests of paleomagnetic stability were applied. The results indicate primary site mean directions that yield a PP with geographic coordinates and statistical parameters as follows: Lat.=76°S, Lon.=280°E, N=12, R=11.63, α95=8°, K=30.2. This PP agrees with mean PPs of Laurasia of similar ages in different models of Pangea A, indicating that the hypothesis of a dipolar paleomagnetic field could be valid for the Late Triassic.Fil: Vizan, Haroldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaFil: Ixer, Robert. The University of Birmingham; Estados UnidosFil: Turner, Peter. The University of Birmingham; Estados UnidosFil: Cortes, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; ArgentinaFil: Cladera, Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaPergamon-Elsevier Science Ltd2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/83508Vizan, Haroldo; Ixer, Robert; Turner, Peter; Cortes, Jose Maria; Cladera, Gerardo; Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 18; 1; 12-2004; 41-590895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981104000756info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2004.08.008info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:31:43Zoai:ri.conicet.gov.ar:11336/83508instacron: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 10:31:43.779CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
title Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
spellingShingle Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
Vizan, Haroldo
Argentina
Late Triassic
Paleomagnetism
Pangea
Precordillera
title_short Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
title_full Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
title_fullStr Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
title_full_unstemmed Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
title_sort Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina
dc.creator.none.fl_str_mv Vizan, Haroldo
Ixer, Robert
Turner, Peter
Cortes, Jose Maria
Cladera, Gerardo
author Vizan, Haroldo
author_facet Vizan, Haroldo
Ixer, Robert
Turner, Peter
Cortes, Jose Maria
Cladera, Gerardo
author_role author
author2 Ixer, Robert
Turner, Peter
Cortes, Jose Maria
Cladera, Gerardo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Argentina
Late Triassic
Paleomagnetism
Pangea
Precordillera
topic Argentina
Late Triassic
Paleomagnetism
Pangea
Precordillera
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Different authors have highlighted a systematic disagreement between Late Carboniferous-Triassic paleomagnetic poles (PPs) for Gondwanaland and Laurasia when they are repositioned in a classical reconstruction prior to the breakup of Pangea A. This disagreement has been interpreted in geodynamic terms or as an evidence of non-dipole components of the geomagnetic field. Such analyses have been made using data on South American PPs published approximately 25 years ago and obtained using outdated methodologies. In this article, the authors present new Late Triassic paleomagnetic data from rocks that crop out in the Pre-Andean ranges (Precordillera) of Mendoza province (Argentina). Samples of different lithologies were taken from two limbs of a doubly plunging syncline, and several field tests of paleomagnetic stability were applied. The results indicate primary site mean directions that yield a PP with geographic coordinates and statistical parameters as follows: Lat.=76°S, Lon.=280°E, N=12, R=11.63, α95=8°, K=30.2. This PP agrees with mean PPs of Laurasia of similar ages in different models of Pangea A, indicating that the hypothesis of a dipolar paleomagnetic field could be valid for the Late Triassic.
Fil: Vizan, Haroldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Ixer, Robert. The University of Birmingham; Estados Unidos
Fil: Turner, Peter. The University of Birmingham; Estados Unidos
Fil: Cortes, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina
Fil: Cladera, Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
description Different authors have highlighted a systematic disagreement between Late Carboniferous-Triassic paleomagnetic poles (PPs) for Gondwanaland and Laurasia when they are repositioned in a classical reconstruction prior to the breakup of Pangea A. This disagreement has been interpreted in geodynamic terms or as an evidence of non-dipole components of the geomagnetic field. Such analyses have been made using data on South American PPs published approximately 25 years ago and obtained using outdated methodologies. In this article, the authors present new Late Triassic paleomagnetic data from rocks that crop out in the Pre-Andean ranges (Precordillera) of Mendoza province (Argentina). Samples of different lithologies were taken from two limbs of a doubly plunging syncline, and several field tests of paleomagnetic stability were applied. The results indicate primary site mean directions that yield a PP with geographic coordinates and statistical parameters as follows: Lat.=76°S, Lon.=280°E, N=12, R=11.63, α95=8°, K=30.2. This PP agrees with mean PPs of Laurasia of similar ages in different models of Pangea A, indicating that the hypothesis of a dipolar paleomagnetic field could be valid for the Late Triassic.
publishDate 2004
dc.date.none.fl_str_mv 2004-12
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/11336/83508
Vizan, Haroldo; Ixer, Robert; Turner, Peter; Cortes, Jose Maria; Cladera, Gerardo; Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 18; 1; 12-2004; 41-59
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/83508
identifier_str_mv Vizan, Haroldo; Ixer, Robert; Turner, Peter; Cortes, Jose Maria; Cladera, Gerardo; Paleomagnetism of Upper Triassic rocks in the Los Colorados hill section, Mendoza province, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 18; 1; 12-2004; 41-59
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/http://www.sciencedirect.com/science/article/pii/S0895981104000756
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2004.08.008
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
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score 13.070432

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