Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report

The Jalisco Block of Western Mexico is thought to be undergoing internal deformation associated with its proposed NW translation relative to the North America plate. This deformation has resulted in the formation of several graben structures within the northern portion of the Jalisco Block; two of w...

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Detalhes bibliográficos
Autores: Maillol, J. M., Bandy, W. L.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:1994
País:México
Recursos:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Geofísica Internacional
Idioma:español
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/477
Acesso em linha:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/477
Access Level:acceso abierto
Palavra-chave:Paleomagnetismo
tectónica
Jalisco
México
Paleomagnetism
tectonics
Mexico
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repository_id_str
spelling Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary reportPaleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary reportMaillol, J. M.Bandy, W. L.PaleomagnetismotectónicaJaliscoMéxicoPaleomagnetismtectonicsJaliscoMexicoThe Jalisco Block of Western Mexico is thought to be undergoing internal deformation associated with its proposed NW translation relative to the North America plate. This deformation has resulted in the formation of several graben structures within the northern portion of the Jalisco Block; two of which are the Talpa de Allende and Mascota grabens.An analysis of paleomagnetic data collected at six distinct, recent, lava flows within the Talpa de Allende and Mascota grabens fail to indicated any statically significant (95% confidence level) motions in this area. Specifically, the expected direction of the geocentric axial dipole field at the site location (D=0°, I=37°)lies within the 95% confidence cone associated with the mean direction calculated for these six sites (D=352.2°, I=24.0°, α95=16.8°).However, the flattening parameter associated with the mean direction of these six sites (12.8±13.1), along with the close proximity of both the North American reference pole and the expected field direction at the side to the corresponding 95% confidence cones of the paleomagnetic results, indicates that additional data may allow for the resolution of the proposed northward movement of the Jalisco Block or of local tiling associated with faulting.Varios autores han propuesto que el Bloque de Jalisco del oeste de México ha sido sometido a deformaciones internas asociadas con un movimiento hacia el noroeste con respecto a la placa Norteamericana. Estas deformaciones habrían resultado en la formación de varias fosas tectónicas dentro de la parte norte del Bloque. Dos de estas fósas son la de Mascota y la de Talpa de Allende. Los análisis de datos paleomagnéticos de seis distintos flujos de lava recientes encontrados en las fosas de Mascota y Talpa no indican movimientos estadísticamente significativos en la zona. Más precisamente, la dirección esperada (campo dipolar axial, 0=0°, 1=37°) se encuentra dentro del cono de confianza de 95% de la dirección paleomagnética promedia (0=352.2°, 1=24.0°, ~s=16.8°). Sin embargo, la proximidad del polo de referencia Norteamericano y del límite de confianza a 95% del polo paleomagnético indica que datos adicionales podrían permitir la definición de un movimiento significativo hacia el Norte, de la parte del Bloque de Jalisco, o la definición de un basculamiento local de la zona.Universidad Nacional Autónoma de México. Instituto de Geofísica1994-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/47710.22201/igeof.00167169p.1994.33.1.546Geofisica Internacional; Vol. 33 No. 1 (1994): January 1, 1994; 153-160Geofísica Internacional; Vol. 33 Núm. 1 (1994): Enero 1, 1994; 153-1602954-436X0016-716910.22201/igeof.00167169p.1994.33.1reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/477/491Derechos de autor 2022 Geofisica Internacionalhttps://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/4772024-08-16T17:31:53Z
dc.title.none.fl_str_mv Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
title Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
spellingShingle Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
Maillol, J. M.
Paleomagnetismo
tectónica
Jalisco
México
Paleomagnetism
tectonics
Jalisco
Mexico
title_short Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
title_full Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
title_fullStr Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
title_full_unstemmed Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
title_sort Paleomagnetism of the Talpa de Allende and Mascota grabens, western Mexico: A preliminary report
dc.creator.none.fl_str_mv Maillol, J. M.
Bandy, W. L.
author Maillol, J. M.
author_facet Maillol, J. M.
Bandy, W. L.
author_role author
author2 Bandy, W. L.
author2_role author
dc.subject.none.fl_str_mv Paleomagnetismo
tectónica
Jalisco
México
Paleomagnetism
tectonics
Jalisco
Mexico
topic Paleomagnetismo
tectónica
Jalisco
México
Paleomagnetism
tectonics
Jalisco
Mexico
description The Jalisco Block of Western Mexico is thought to be undergoing internal deformation associated with its proposed NW translation relative to the North America plate. This deformation has resulted in the formation of several graben structures within the northern portion of the Jalisco Block; two of which are the Talpa de Allende and Mascota grabens.An analysis of paleomagnetic data collected at six distinct, recent, lava flows within the Talpa de Allende and Mascota grabens fail to indicated any statically significant (95% confidence level) motions in this area. Specifically, the expected direction of the geocentric axial dipole field at the site location (D=0°, I=37°)lies within the 95% confidence cone associated with the mean direction calculated for these six sites (D=352.2°, I=24.0°, α95=16.8°).However, the flattening parameter associated with the mean direction of these six sites (12.8±13.1), along with the close proximity of both the North American reference pole and the expected field direction at the side to the corresponding 95% confidence cones of the paleomagnetic results, indicates that additional data may allow for the resolution of the proposed northward movement of the Jalisco Block or of local tiling associated with faulting.
publishDate 1994
dc.date.none.fl_str_mv 1994-01-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/477
10.22201/igeof.00167169p.1994.33.1.546
url http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/477
identifier_str_mv 10.22201/igeof.00167169p.1994.33.1.546
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/477/491
dc.rights.none.fl_str_mv Derechos de autor 2022 Geofisica Internacional
https://creativecommons.org/licenses/by-nc-sa/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Derechos de autor 2022 Geofisica Internacional
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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 Geofisica Internacional; Vol. 33 No. 1 (1994): January 1, 1994; 153-160
Geofísica Internacional; Vol. 33 Núm. 1 (1994): Enero 1, 1994; 153-160
2954-436X
0016-7169
10.22201/igeof.00167169p.1994.33.1
reponame:Geofísica Internacional
instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron:UNAM
instname_str UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron_str UNAM
institution UNAM
reponame_str Geofísica Internacional
collection Geofísica Internacional
repository.name.fl_str_mv
repository.mail.fl_str_mv
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