Artículo

Lower Cretaceous rocks of Sierra Los Chinos, east-central Sonora, Mexico

Monreal, Rogelio; Longoria, José F.

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

Licencia de uso

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

Monreal, Rogelio, et al. (2000). Lower Cretaceous rocks of Sierra Los Chinos, east-central Sonora, Mexico. Geofísica Internacional; Vol. 39 No. 4, 2000. Recuperado de https://repositorio.unam.mx/contenidos/42410

Descripción del recurso

Autor(es)
Monreal, Rogelio; Longoria, José F.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Lower Cretaceous rocks of Sierra Los Chinos, east-central Sonora, Mexico
Fecha
2012-04-25
Resumen
Most Lower Cretaceous rocks in Sonora are part of the Bisbee Group of southern Arizona, deposited within a basin considered to be an extension of the Gulf of Mexico into Texas, New Mexico, Arizona and Sonora. However, the Lower Cretaceous rocks of the Sierra Los Chinos are more closely related to the Lampazos rocks of eastern Sonora, and consequently, to Chihuahua stratigraphy. In the Los Chinos area, the exposed Lower Cretaceous units include the Agua Salada, Lampazos and Los Picachos Formations. The Upper Cretaceous sequence is made up of volcanosedimentary rocks overlain by Tertiary intrusive, volcanic, and sedimentary rocks. Lower Cretaceous rocks of the Sierra Los Chinos area are strongly folded and faulted, with kilometer-scale overturned folds and thrusts. The area was affected by at least two episodes of normal faulting. The Sierra Los Chinos sequence is paleogeographically and tectonically related to the Chihuahua tectonic belt and is unrelated to the Bisbee Group of Sonora. The marine conglomerate at the base of the Los Picachos Formation represents a significant active tectonic episode at the end of the Albian, possibly related to re-activation of strike-slip faulting due to tectonic transpression. The compressional structures in the Los Chinos area are similar to structures of the same age in the states of Chihuahua, Coahuila, and Nuevo León.
Tema
Lower Cretaceous; Sonora; Chihuahua trough; Cretácico Inferior; Sonora; cuenca de Chihuahua
Idioma
spa
ISSN
0016-7169

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