Geological-structural position and genesis of the Sovinoe gold ore deposit in Chukotka

Author:
  • OLOleg Ladny
    Oleg Ladny
Publisher website
Google Scholar
Abstract
The localization conditions for the large Sovinoe gold-quartz deposit were clarified based on results of the geological exploration. It has been ascertained that the vein- and stockwork-type ore bodies are confined to gentle ttectonic nappe zones in sites where they are crossed by steeply dipping faults. Ore deposition occurred under conditions of long-term tectonic movements, with participation of gold-bearing fluids enriched in methane and carbon dioxide, coming from deep-seated magmatic chambers at the stage of the orogen activation. The fluid flow was confined to deep-seated faults and represented the main factor for the transformation of tectonized terrigenous-sedimentary rocks into carbonaceous shales and for the formation of quartz-veined gold mineralization.