 The geology largely comprises crystalline rocks, which give rise to the varied morphology of the landscape.It is located in a large geological unit known as the craton of San Francisco, referring to extensive crustal nucleus of central-eastern Brazil, tectonically stable at the end of the Paleoproterozoic and bordering areas that suffered the regeneration at the Neoproterozoic.The archean rocks members of Belo Horizonte complex and supracrustal sequences of the Paleoproterozoic is predominant.