Gold Deposits of the Russian North East (The Northern Circum Pacific): Metallogenic Overview

摘要

North Eastern Russia encompasses the northerm part of the Circum Pacific. The region comprises various tectonostratigraphic terranes, including cratonic blocks, fragments of volcanic arcs, accretionary wedge terranes, oceanic crust and passive continenal margins. The terranes have been accreted to the eastern margin of the Siberian Craton in the Late Mesozoic. The prominent structures of the region are extended zones of the Mesozoic flysch and turbidities. Another important structure is the 3000 km long Okootsk-Chukotka volcanic arc which marks the Cretaceous active continental margin of northern Eurasia. The youngest structure of the region is the 2000 km long Late Cainozoic Kamchatka-Kuril island arc system.