Alkaline Rocks and Carbonatites of the World

Funded by HiTech AlkCarb - New geomodels to explore deeper for Hi-Tech critical raw materials in Alkaline rocks and Carbonatites

Dyke Field

stripes

Occurrence number: 
084-00-025
Country: 
Kazakhstan
Location: 
Longitude: 75.25, Latitude: 50.83

Fifteen kilometres to the southeast of the Berkutinskii intrusion there is a field of dykes and dyke-shaped bodies which are situated to the northeast of the town of Zsheltan. It stretches for 10-12 km with a width of 3-4 km; individual dykes are from 0.1 to 0.3 km thick. The dykes are of fine-grained arfvedsonite-riebeckite syenite and granosyenite and also contain aegirine and accessories including fluorite. There are some peralkaline syenites which are cut by veins of sodalite-nepheline syenite in which the nepheline comprises 20-45% and sodalite plus cancrinite 5-25%.

Age: 
Later Palaeozoic.
References: 
MONICH, V.K., ABDRAKHMANOV, K.A., NURLIBAYEV, A.N., ZHYR'ANOV, V.N., STAROV, V.I., NARSEEV, A.A., BUGAEZ, A.N. and SEMENOV, Yu, A. 1965a. Alkaline intrusions of Kazakhstan and their age correlation. Abstracts of the First Kazakhstan Petrographic Conference. Kazakhstan Academy of Science, Alma-Ata. 19-22.MONICH, V.K., IVANOV, A.I., KOMLEV, L.V., LAPICHEV, G.F. and SEMENOV, T.P. 1965b. Age of magmatic and metamorphic rocks of the East Kazakhstan geochronological scale. In Magmatism and metamorphism of East Kazakhstan. 27-8. Akademii Nauk Kazakhstan SSR, Alma-Ata.SEVRYUGIN, N.A. and SEMENOVA, T.P. 1960. The determination of the age of the eruptive rocks of the Degelen-Chingiz region by the Ar method. Trudy Kazakhstan IMS, 3: 91-9.
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