The gold-silver Okhotsk-Chukotka volcanic belt |
| |
| Authors: | A A Sidorov A V Volkov V F Belyi V Yu Alekseev E E Kolova |
| |
| Institution: | 1.Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry,Russian Academy of Sciences,Moscow,Russia;2.Northeast Interdisciplinary Research Institute, Far East Division,Russian Academy of Sciences,Magadan,Russia |
| |
| Abstract: | The Okhotsk-Chukotka volcanic belt (OChVB) formed over 25 Ma from the middle Albian to the Cenomanian at the boundary of the
continental Verkhoyansk-Chukotka and the Koryak-Kamchatka collages of terranes as a special tectonic unit of the Earth℉s crust
composed of subaerial volcanic rocks extending for 3000 km. In regard to the oceanic margin, the inner, outer, and flank zones
of the OChVB have been recognized. The complex structure of terranes in the basement and the OChVB itself resulted in the
formation of diverse epithermal deposits. Porphyry copper-molybdenum deposits are concentrated in the inner zone. The outer
zone is characterized by gold-silver ore mineralization and a variety of tin deposits. Silver-base-metal deposits (Dukat,
Lunny, Arylakh, etc.) are confined to the rift-related volcanic trough that complicates the OChVB between the Yana-Kolyma
and Omolon terranes. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
