Brazil Tours / Geology - The Atlantic Shield is one of the 3 shields of the
South American Platform and the geological foundation of the
AtlanticRainforest.
Shields are large regions, where the Precambrian
basement of a continent is exposed to the surface.
It is composed of the
São Francisco Craton (SFC) in its center surrounded by several
orogenic fold belts which for descriptive purposes were grouped into
3 geotectonic provinces:
Mantiqueira (M), Borborema (B) and Tocantins (T).
Main cities: Salvador (S),
Brasilia (B), Belo Horizonte (BH), São Paulo (SP).