 The two first periods are mainly characterized by magmatic activity leading to the formation of Archaean Tonalite-Trondhjemite-Granodiorite (TTG) such as the Sand River Gneisses or the Bulai Granite intrusion.The Early Proterozoic event took place under high-grade metamorphic conditions during which partial melting formed large amount of granitic melt.The Limpopo Central Zone shows relics of late Archean high grade metamorphism.