The Kupol deposit is located in the 3,000 km long Cretaceous Okhotsk–Chukotka
volcanogenic belt that is interpreted to be an Andean volcanic arc type tectonic setting,
with the Mesozoic Anui sedimentary fold belt in a back-arc setting to the northwest of
the Kupol region. Russian 1:200,000 scale mapping indicates that the Kupol deposit
area is centered within a 10 km wide caldera, along the northwestern margins of the
100 km wide Mechkerevskaya volcano-tectonic ‘depression’, an Upper Cretaceous
bimodal nested volcanic complex.