The possibility that it represents the transition from amphibolite facies to granulite facies metamorphism has been given some support from observations of the uplifted central part of the Vredefort Dome and the surrounding Kaapvaal craton.
22.
Three major episodes of deformation and metamorphism were involved in the Aravalli Supergroup, including shearing, kink bands and crenulations etc . Metamorphic grades of the rocks generally range from greenschist facies to amphibolite facies.
23.
In the Northern Kaapvaal Craton ( Renosterkoppies Greenstone Belt, Pietersburg area ) tectonism took place under amphibolite facies conditions at ca . 2.75 Ga and can therefore not be related to any events in the Limpopo belt.
24.
This elongate greenstone belt is characterized by Hausel as a synclinorium of metamorphosed volcanic, sedimentary and plutonic rocks that have been regionally metamorphosed to greenschist and amphibolite facies, and locally overprinted by a later retrogressive greenschist facies event.
