Diky Greben is an extrusion made of andesite and dacite. It is a dome that was formed along fissures from mostly dacitic lava. Cracks on the dome hold several lakes. Large outbursts of pumice also occurred at Diky Greben, and very thick pumice flows exist in the area.
Erlich, E.N. and Melekestsev, I.V., "Quaternary Acid Volcanism of Kamchatka," Modern Geology, v. 3, pp. 183-193, 1972.
Kozhemyaka, N.N., "Quaternary Pumice Tuff-Ignimbrite Fields and Centers of Eruption in Southern Kamchatka," Akad Nauk USSR, Bulletin of Volcanology, Station No. 57, 1979.
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