Morphotectonic analysis for an area to the south-east of Brazil

The area of study is located near Rio de Janeiro city  at Niterói, a region mainly composed by precambric rocks (560 M.a.). The geomorphologic evolution of this area is characterized by the existence of at least two main tectonic events, which has been studied from morphometric and fracture analysis...

Szczegółowa specyfikacja

Opis bibliograficzny
Główni autorzy: Serrano-Suárez, Beatriz Elena, Ferrari, Andre Luiz
Format: Online
Język:spa
Wydane: Universidad Pedagógica y Tecnológica de Colombia - UPTC 2008
Hasła przedmiotowe:
Dostęp online:https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/872
Opis
Streszczenie:The area of study is located near Rio de Janeiro city  at Niterói, a region mainly composed by precambric rocks (560 M.a.). The geomorphologic evolution of this area is characterized by the existence of at least two main tectonic events, which has been studied from morphometric and fracture analysis. The data indicate the existence of an initially normal left-lateral stress regime during Lower Cretaceous, followed by a left-lateralstress regime during Paleogene. Finally it is inferred the existence of a younger rigth-lateral stress regime that might correspond to a pleistocene tectonc event reported in ohter areas. It is suggested that this methodology can also be applied to similar areas in Colombia, specifically whwrw there are outcrops of igneous or metamorphic basement.