Some show granulite facies metamorphism, but most are the slightly lower temperature amphibolite facies.
2.
A shield is that part of the metamorphosed greenschist, amphibolite, and granulite facies.
3.
The Metasedimentary Belt is predominantly sedimentary and volcanic rocks which have undergone greenschist to granulite facies metamorphism.
4.
The main metamorphic event in the Central Region was the 2.5 Ga granulite facies Badcallian event.
5.
The metapelites are of granulite facies and the ultramafics are of greenschist facies and the enclosing gneisses represent amphibolites facies.
6.
The metamorphic grade is considered to be peak granulite facies, but the majority has preserved peak amphibolite facies assemblages.
7.
The Gneiss Belt is made up of felsic gneisses and amphibolites that were metamorphosed in the upper amphibolite to granulite facies.
8.
The Northern Region lacks evidence of granulite facies and in the Southern Region an earlier 2.73 Ga event is recognised locally.
9.
If burial continues along Barrovian Sequence metamorphic trajectories, greenschist facies gives rise to amphibolite facies assemblages, dominated by amphibole and eventually to granulite facies.
10.
The rocks of the Rayner Complex are generally of a lower metamorphic grade ( upper amphibolite to granulite facies ) than those found in the Napier Complex.
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