Distribution patterns of lead-zinc mineralization in Gorno-Altay

The map and chart of correlations of the region's polymetallic ores with geologic, tectonic, and other variables, on the geochronological scale, indicate the end of the Hercynian geologic-tectonic cycle as the time of the regional appearance of the lead-zinc mineralization and also, locally of some deposits of copper ores. However, many of the Zmeyinogorsk (Middle Carboniferous), formed during the main stage of the Hercynian folding, carry ores only in the inherited Hercynian synclinoria or in zones of deep ruptures. Their polymetallic and other ores are of the skarn type, as a rule. -- AGI Staff.