Kananyga

This occurrence consists of just six outcrops of alkaline basaltic rocks. One of them is a small sheet, crowning the watershed and, apparently, directly linked with a feeder channel. The sheet is 70-80 m thick and consists of lavas with scoriaceous material at the base, while the upper section comprises massive basaltoids. The top of the section is composed of scoria together with volcanic bombs and lapilli of the same composition. Dykes and extrusive domes (0.1-0.4 km2) also occur and consist of dense and vesicular basaltoids with lherzolite inclusions. They are porphyritic rocks with olivine and titanaugite phenocrysts; the groundmass has a micropoikilitic texture and consists of oligoclase (An17-22) and feldspathoids, which are mainly leucite but nepheline and analcime are also present, and abundant prisms of clinopyroxene, which are enclosed poikilitically by feldspathoid, apatite and Ti-Fe oxide minerals.