Artículo

Morphological and structural analysis of the central sector of the transmexican volcanic belt

Pasquare, G.; Ferrari, L.; Perazzoli, V.; Tiberi, M.; Turchetti, F.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

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Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Pasquare, G., et al. (1987). Morphological and structural analysis of the central sector of the transmexican volcanic belt. Geofísica Internacional; Vol. 26 No. 2, 1987. Recuperado de https://repositorio.unam.mx/contenidos/42095

Descripción del recurso

Autor(es)
Pasquare, G.; Ferrari, L.; Perazzoli, V.; Tiberi, M.; Turchetti, F.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Morphological and structural analysis of the central sector of the transmexican volcanic belt
Fecha
2012-12-25
Resumen
In this paper the post-orogenic evolution of a central sector of the Mexican Volcanic Belt (MVB) in the states of Guanajuato and Michoacán 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.
Idioma
spa
ISSN
0016-7169

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