Geologicheskii Vestnik

This paper describes the characteristics of the Early-Eifelian Irendyk developed arc, which is traced in the West Magnitogorsk zone in the meridional direction for 500 km. In the northern part, the Irendyk island arc is formed by large basalt-andesibasalt stratovolcanoes. In the southern part, at the latitude of Gadelsha tract, it contains ankaramite-bearing volcanoes of the central type Gadelshinsky, Kunakay and Gadilewsky, Suurgansky complex of areal acidic volcanism, Podolsky calderavolcano containing large massive sulfi de Podolsky (Cu > Zn) and East-Podolsky barite-polymetallic deposits. E.V. Pushkarev discovered platinum mineralization in ankaramites. Platinum is also present in the Gadelshinsky gold deposits.

island arc, volcanism, ankaramites, massive sulfi de occurence, subduction

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