Abstract
An Archaean-Lower Proterozoic mobile belt can be recognized in the West African — Brazilian — Southern African portions of Gondwanaland extending from the Kasila Group of Sierra Leone, through the Goias Belt of Central Brasil to the Namaqua Mobile Belt of Namibia (KGN). This belt is characterised by high shear strain deformation and high grade metamorphism and may represent a transform-shear mobile belt. Shear movement and displacement along the KGN during the Precambrian has affected the older cratons and controlled major secondary tensional and shear belts which are now recognized as younger Proterozoic mobile belts.
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