Karasyrskii
The Karasyrskii intrusion is situated on the eastern side of the Mugod'arsky anticlinorium amongst Precambrian gneisses.
Kazakhstan is a large country with an area of about 2.7 million km2. More than 50 occurrences of alkaline rocks are known which are spread widely over this extensive territory. It is probable that a number of distinct provinces are represented within the country but for the purpose of the present work all occurrences have been combined as one national group. The geology of Kazakhstan is complex and involves blocks of the East European (Russian) and Scyptian-Turanian platforms and Caledonian, Hercynian and Alpine fold belts. The distribution of the occurrences of alkaline igneous rocks are shown on Fig. 2_60.
The Karasyrskii intrusion is situated on the eastern side of the Mugod'arsky anticlinorium amongst Precambrian gneisses.
Borsuksai is situated amongst Precambrian gneisses and metamorphosed shales in the eastern part of the Mugodzharsky mega-anticlinorium, where it coincides with the intersection of north-south- and east-west-trending faults.
The Zhusalinskii intrusion is situated in North Ala-Tayu. It comprises two small massifs of alkaline gabbroids. The northern intrusion is some 450 m in length the southern 120 m. The southern intrusion consists of shonkinite porphyries, with rather less olivine shonkinites.
Karsakpai is situated in the central area of the Mai-Tubinskii anticlinorium and lies amongst Middle Proterozoic crystalline schists, amphibolites and granite gneisses. The complex is about 6x4 km and has a concentric ring structure.
Zhilanda is a small stock of about 1 km2 consisting of subalkaline gabbroids (monzonites) and peralkaline syenites. Khulan is situated near Zhilanda and is very similar in form and size. It also is composed of subalkaline gabbroids (monzonites) and peralkaline syenites.
Located in southern Kazakhstan, Daubabinskoye, together with Kaindy (No. 18) and Irisu (No. 19), lies on an east-west-trending deep fracture zone in the Precambrian basement which has been detected geophysically.
The Kaindy complex is situated in the Talassky Alatau and has a rather irregular configuration. It appears to be a pipe-like stock with a zonal structure the central part of which is composed of alkaline pyroxenites which contain pseudoleucite.
Irisu is an intrusion of assymetrical form which is concentrically zoned and emplaced into limestones. The area is more than 25 km2 (9x3 km), but only the more easterly 8 km2 outcrops at the surface.
Elinovskii is a long, narrow granitic body of some 400x50 m lying within terrigenous lower Devonian sandstones and limestones and lower Silurian limestones. In the southeastern part of the contact they are intensively altered to skarns.
This occurrence is situated between mid-Palaeozoic sedimentary rocks and granitoids of upper Palaeozoic age. Peralkaline granites, which comprise most of the intrusion, form a stock the form of which is complicated by numerous faults.