Alkaline Rocks and Carbonatites of the World

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Surmetashskii

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Occurrence number: 
086-00-016
Country: 
Kyrgyzstan
Location: 
Longitude: 71.9, Latitude: 39.75

Surmetashskii is a ring intrusion which is elliptical in plan. The country rocks are limestones, dolomites and schists. There are two principal intrusive phases: alkaline quartz-bearing syenites and tourmaline-bearing granites. Nepheline syenites are concentrated in the south of the intrusion with the central areas occupied by alkaline olivine-bearing melano- and leucocratic syenites. These rocks gradually pass into quartz-bearing syenites, in which veins and irregular patches of pegmatite and dykes of hybrid syenite are developed as well as skarn xenoliths.

References: 
KAYUMOV, A.K. and KARABAEV, K.K. 1981. Alkaline magmatism and ore-formation of the south Tyan-Shan. Uzbek Academy of Science Publishers, Tashkent. 135 pp.SHINKAREV, N.F. 1966. Upper Palaeozoic magmatism of Turkestan-Alay. Leningrad University Publishers, Leningrad. 152 pp.
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith