stripes
This sheet-like body covers an area of 5x0.6-1.5 km. It is surrounded by lower and middle Devonian volcanic rocks and is composed of theralite porphyry, nepheline monzonite and bereshite (a monzonite or monzogabbro rich in nepheline phenocrysts and with analcime and augite rimmed by aegirine). These rocks are cut by dykes of peralkaline and mildly alkaline syenite and dolerite. According to Skobelev (1963) nine lava flows of bereshite have been distinguished.
DOVGAL' V.N. and SHIROKIH, V.A. 1980. History of the development of the high alkaline magmatism of the Kuznetsk Alatau. Proceedings of the Institute of Geology and Geophysics, Nauka, Siberian Branch of the Academy of Sciences, Novosibirsk. 457. 216 pp.
SKOBELEV, Yu.D. 1963. The Tuluyul massif of alkaline rocks. InI.K. Bazenov and Yu.D. Skobelev (eds) The geology and petrography of nepheline rocks of Kuznetsk Alatau. 126-34. Gosgeoltekhizdat, Moscow.