Influence of the metallogeny of early development epochs of the Omolon cratonic terrane (Northeastern Russia) on the mineralogy and geochemistry of middle Paleozoic epithermal ore deposits

Examples are presented of an influence of the metallogeny of early development epochs of the Omolon cratonic terrane (OCT), from the Archean and Proterozoic to the Riphean and early Paleozoic, on the mineralogy and geochemistry of middle Paleozoic epithermal Au-Ag deposits of the Kedon volcanic belt (KVB). It is shown that the input of metals (Fe, Pb, Cu, Au, and PGE) from the ancient basement formations of younger volcanic edifices of the KVB served as an additional source of matter during the formation of middle Paleozoic Au-Ag epithermal ores. The information provided in the article is of great practical importance for regional forecasting metallogenic interpreta- tions, prospecting, and evaluation of gold deposits.