Kugalin Gr

In the Mogoltau Mountains, the formations under consideration were first described by B. N. Nasledov in 1942 as the Agadzhalsky suite. In the Kalkanata Mountains, similar formations were studied by B. N. Sigalov, O. M. Borisov, Zh. N. Kuznetsov, and V. N. Baikov, who distinguished two suites - the Katranginskaya and Kalkanatinskaya, with the first being correlated by V. N. Baikov to the Agadzhalsky suite of Mogoltau. E. G. Krasnov in 1964 proposed to consolidate all pre-carboniferous volcanics of Karamazara under the name of the Kugalinskaya suite, in analogy with similar formations of the Chatkalsky Ridge. This proposal is accepted in this work; however, we distinguish the Kugalinskaya "series" as a subdivision combining several different suites.

Synonym: Kugalinskaya series, Куrалинская серия, Agadzhalsky suite, агаджальская свита, Kalkanatinskaya suite, калканатинская свита

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The lower part of the Kugalin Gr (the Agadzhalsky Fm (агаджальская свита) in Mogoltau and the Katranginskaya in Kalkanata) is composed of greenish-gray, sometimes purple, pyroxene-amphibole andesites, dacites, and andesitobasalts, as well as their clastolavas. They contain lenses of tuff sandstones, polymict sandstones, and siltstones (=silt like). The thickness in Mogoltau is 1500 m, in Kalkanata - 600 m (incomplete).

The upper part of the Kugalin Gr (the Kalkanatin Fm) (калканатинская свита) is mainly developed in the Kalkanata Mountains. It is composed of brown and pink, less often brownish-green, liparites, their ignimbrites, and tuffs. At the base, there are sometimes thin beds of tuff sandstones and tuff conglomerates. The thickness is 900 m.

The volcanics of the Kugalinskaya series lack organic remains