Approximate location of Mesoproterozoic
(older than 1.3 Ga) cratons in South America and Africa. The São Luís and the Luis Alves cratonic fragments (Brazil) are shown, but the Arequipa–Antofalla Craton, the Sahara Craton and some minor African cratons are not. Other versions describe the Guiana Shield
separated from the Amazonian Shield by a depression.
The Amazonian Shield is a geologic province located in South America and occupies quite a lot of the eastern part of the continent. Smaller areas of Precambrian rocks to the North and South of the Amazonian Shield are the Guiana Shield, Rio Apa and Platian cratons, to the east there is the Sao Francisco Craton.
See also