Abstract
Thermal Evolution of the Guyana ShieldThe Guyana Shield, located at the northern part of the Amazonian Craton, is formed by an Archean nucleus, with rocks up to 2700 Ma old, included in Proterozoic granitic rocks, with about 2000 Ma old. A huge fault mega-zone, named K'Mudku, crosses the entire region, about 1500 Km long and about 300-400 Km large, with a NE-SW structural trend. Its estim…