Scientific publications

The Early Proterozoic epoch is most productive for big complex noble-metal deposits in the Karelian region. It is during that epoch that the White Sea-Lapland triradiate rift zone, which controlled well-known complex noble-metal deposits (Pudozhgora, Koikary-Svyatnavolok and Aganozero) predicted in connection with the activation of a ca.2.0 Ga protorift, was formed and evolved. The main genetic types of gold mineralization in the region are orogenic mesozonal, porphyric and epithermal. Prospectives for big economic gold deposits are associated with the Proterozoic epoch; Paleoproterozoic greenstone belts; a domain, where the Svecofennian oceanic plate interacts convergently with the Karelian continent. As Archean greenstone belts have been highly metamorphosed by Svecofennian processes, they are unlikely to host big gold deposits. Platinoid-gold occurrences in Belomorian gneisses are similar to a class of polygene deposits of the base-metal formation of carbonaceous rocks and their metamorphic products. Considering the world gold demand and the condition of Russia's payable gold deposits, Karelia is a region, where economic gold production is likely to be launched in the near future.