Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt

In this paper the post-orogenic evolution of a central sector of the Mexican Volcanic Belt (MVB) in the states of Guanajuato and Michoacan is analyzed. The main structural units are recognized on the basis of a morphological analysis and geological data. Four categories of morphological units were e...

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Detalles Bibliográficos
Autores: Pasquare, G., Ferrari, L., Perazzoli, V., Tiberi, M., Turchetti, F.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1987
País:México
Institución:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Geofísica Internacional
Idioma:español
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/1084
Acceso en línea:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1084
Access Level:acceso abierto
Palabra clave:Morfología
geología
evolución post laramídica
Morphology
geology
post laramidic evolution
cinturón volcánico mexicano
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spelling Morphological and structural analysis of the central sector of the Transmexican Volcanic BeltMorphological and structural analysis of the central sector of the Transmexican Volcanic BeltPasquare, G.Ferrari, L.Perazzoli, V.Tiberi, M.Turchetti, F.Morfologíageologíaevolución post laramídicaMorphologygeologypost laramidic evolutioncinturón volcánico mexicanoIn this paper the post-orogenic evolution of a central sector of the Mexican Volcanic Belt (MVB) in the states of Guanajuato and Michoacan is analyzed. The main structural units are recognized on the basis of a morphological analysis and geological data. Four categories of morphological units were established. These are: 1. Reliefs belonging to geological formations older than MVB and characterized by Laramide orogenic deformation. 2. Pre-MVB planar structural surfaces. 3. Depositional surfaces belonging to sedimentary orvolcanoclastic infilling of post-orogenic tectonic depressions. 4. Surfaces of MVB volcanoes. In this analysis the main morphogenetic stages were recognized ;these were related to tensional tectonic phases and to the main volcanic events. An early tensional tectonic phase is associated with the volcanic activity which formed the pre-Miocene deposits of the Sierra Madre Occidental. A NNW-SSE trending system is dominant during the late Miocene and is related to the "Basin and Range" province of western U. S. A. NW-SE faulting during Pliocene along Californian trends is responsible for the initial volcanic activity of the MVB. Late Pliocene trends are WSW-ENE. The last tensional phase causes N-S and NNE-SSW grabens, as a possible reactivation of "Basin and Range" structures.En este trabajo se analiza la evolución post-Laramídica de un sector del Cinturón Volcánico Mexicano (CVM), comprendido entre los estados de Michoacán y Guanajuato. Se reconocieron las principales unidades estructurales por medio de análisis morfológicos y datos geológicos. En particular, se establecieron cuatro tipos de unidades morfo1ógicas: 1. Relieves pertenecientes a unidades geo!6gicas más antiguas del CVM y afectados por las deformaciones orogénicas compresivas. 2. Superficies estructurales planas precedentes a! CVM. 3. Superficies deposicionales generadas por relleno de depresiones tect6nicas post-orogénicas. 4. Superficies morfológicas del CVM. En este análisis, se reconstruyeron las etapas más importantes relacionadas con las fases tectónicas distensivas y con los eventos volcánicos principales. Una primera etapa tect6nica distensiva está asociada a la actividad volcánica de edad pre-Mioceno, en la secuencia de la Sierra Madre Occidental. En el Mioceno tardio prevalecen las directrices rumbo NNW-SSE, relacionadas con la provincia "Basin and Range", de los Estados Unidos Americanos. En el Plioceno, las primeras manifestaciones volcánicas pertenecientes al CVM se pueden relacionar posiblemente con fallas de direcci6n Califoniana NW-SE. Un cambio muy importante de lineamientos estructurales se presenta a partir del Piioceno Tardio, presentando rumbo WSW-ENE. La última etapa distensiva causa la formación de grabenes orientados N-S y NNE-SSW que cruzan y fracturan las estructuras precedentes al CVM, removilizando lineamientos relacionados con la provincia "Basin and Range".Universidad Nacional Autónoma de México. Instituto de Geofísica1987-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/108410.22201/igeof.00167169p.1987.26.2.1108Geofisica Internacional; Vol. 26 No. 2 (1987): April 1, 1987; 177-193Geofísica Internacional; Vol. 26 Núm. 2 (1987): Abril 1, 1987; 177-1932954-436X0016-716910.22201/igeof.00167169p.1987.26.2reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1084/1015Derechos de autor 1987 Geofisica Internacionalhttps://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/10842024-08-16T17:32:04Z
dc.title.none.fl_str_mv Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
title Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
spellingShingle Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
Pasquare, G.
Morfología
geología
evolución post laramídica
Morphology
geology
post laramidic evolution
cinturón volcánico mexicano
title_short Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
title_full Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
title_fullStr Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
title_full_unstemmed Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
title_sort Morphological and structural analysis of the central sector of the Transmexican Volcanic Belt
dc.creator.none.fl_str_mv Pasquare, G.
Ferrari, L.
Perazzoli, V.
Tiberi, M.
Turchetti, F.
author Pasquare, G.
author_facet Pasquare, G.
Ferrari, L.
Perazzoli, V.
Tiberi, M.
Turchetti, F.
author_role author
author2 Ferrari, L.
Perazzoli, V.
Tiberi, M.
Turchetti, F.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Morfología
geología
evolución post laramídica
Morphology
geology
post laramidic evolution
cinturón volcánico mexicano
topic Morfología
geología
evolución post laramídica
Morphology
geology
post laramidic evolution
cinturón volcánico mexicano
description In this paper the post-orogenic evolution of a central sector of the Mexican Volcanic Belt (MVB) in the states of Guanajuato and Michoacan is analyzed. The main structural units are recognized on the basis of a morphological analysis and geological data. Four categories of morphological units were established. These are: 1. Reliefs belonging to geological formations older than MVB and characterized by Laramide orogenic deformation. 2. Pre-MVB planar structural surfaces. 3. Depositional surfaces belonging to sedimentary orvolcanoclastic infilling of post-orogenic tectonic depressions. 4. Surfaces of MVB volcanoes. In this analysis the main morphogenetic stages were recognized ;these were related to tensional tectonic phases and to the main volcanic events. An early tensional tectonic phase is associated with the volcanic activity which formed the pre-Miocene deposits of the Sierra Madre Occidental. A NNW-SSE trending system is dominant during the late Miocene and is related to the "Basin and Range" province of western U. S. A. NW-SE faulting during Pliocene along Californian trends is responsible for the initial volcanic activity of the MVB. Late Pliocene trends are WSW-ENE. The last tensional phase causes N-S and NNE-SSW grabens, as a possible reactivation of "Basin and Range" structures.
publishDate 1987
dc.date.none.fl_str_mv 1987-04-01
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/1084
10.22201/igeof.00167169p.1987.26.2.1108
url http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1084
identifier_str_mv 10.22201/igeof.00167169p.1987.26.2.1108
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/1084/1015
dc.rights.none.fl_str_mv Derechos de autor 1987 Geofisica Internacional
https://creativecommons.org/licenses/by-nc-sa/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Derechos de autor 1987 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. 26 No. 2 (1987): April 1, 1987; 177-193
Geofísica Internacional; Vol. 26 Núm. 2 (1987): Abril 1, 1987; 177-193
2954-436X
0016-7169
10.22201/igeof.00167169p.1987.26.2
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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