Evolution of the material composition of the archean supracrustal complexes of the Kola region

This article discusses the evolution of the composition of the Archean supracrustal complexes of the Kola region. An original technique based on the detection of their geochemical features has been developed to determine the relative age of formation of each of them allowing a given series sets to determine the evolutionary trend of their premethamorphic development. It gave an opportunity to determine not only the spatial and temporal variability of their composition but also show that the most ancient of them are supracrustal complexes of the Keivy domain.