Role of Thrusts in the Formation of Epithermal Au-Ag Deposits in the Paleozoic Kedon Volcanic Belt (Northeastern Russia)

摘要

The Omolon cratonic terrane includes the pre-accretionary (D_(2-3)) Kedon volcanic belt mostly formed on the continental crust . In the 1990s, the geologists of the Seimchan geological-prospecting expedition discovered and subsequently explored the large epithermal Kubaka low-sulfide gold deposit in the Avlanda ore district on the southern flank of the Kedon volcanic belt, which is one of the world largest deposits . In 1999, the geologists from the OZRK Company discovered another low-sulfide gold deposit (Birkachan) 40 km north of the Kubaka deposit .