Gnaisses Porto Alegre Rs
Mostrando 1-1 de 1 artigos, teses e dissertações.
-
1. Geologia, petrografia e litogeoquímica dos Gnaisses Porto Alegre, RS, Brasil: implicações geotectônicas
The Porto Alegre gneiss is a unit composed of granodioritic to monzogranitic gneisses, with subordinate tonalitic and dioritic rocks. The unit represents the basement intruded by several granitic plutons of Neoproterozoic age. The gneisses show an elongate form of NE-SW direction, and constitute a roof pendant. They have composite banding, which results of i
Publicado em: 2010