Features of precambrian metamorphism and their relation to tectonics
The Early Precambrian stratigenic basement formations of ancient platforms are distinguished by their all-present metamorphism and the presence of monofacial (areal) and polyfacial (zonal) metamorphic complexes. Areal complexes are only often found in the basement of Epikarelian kratons, while the zonal complexes were also known to occur in Neogeos structures.