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Established pre-Rodinian connections between cratonic blocks around the world lead to the proposal of a Paleo-Mesoproterozoic supercontinent, named Columbia, which may have contained nearly all of the earth's continental blocks at some time between 1.8 Ga and 1.5 Ga. The assembly of Columbia was completed during the global-scale 2.1-1.8 Ga collisional event, forming the 2.1-2.0 Ga Transamazonian Orogen...
The 2.1-2.0 Ga Transamazonian orogen in South America can be well correlated with the 2.1-2.0 Ga Eburnean orogen along the western margin of West Africa. Both the orogens are characterized by early tangential tectonics, marked by large-scale thrusts and sinistral strike-slip faults, followed by later transcurrent tectonics, marked by dextral shear zones. Metamorphic evolution of the two orogens involved...
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