Central Kamchatka volcanic and sedimentary basin 

(Oligocene to Holocene) 

(Kamchatka Peninsula, unit Czs)

Consists chiefly of late Pliocene and Quaternary volcanic and sedimentary rocks up to 5 km thick and 
ranges from 20 to 70 km wide and 350 km long. Basin contains mainly shallow-marine sedimentary rocks 
up to 6,000 m thick, and widespread tuff, basalt, and basaltic andesite. Unit overlies deformed Late 
Cretaceous to early Tertiary sedimentary rocks. Basin interpreted as forearc unit for central Kamchatka 
volcanic belt (unit kc). REFERENCES: Vlasov, 1964; Shapiro and others, 1987