Geologicheskii Vestnik

The deposits of Karatau Series are represented in the Alatau anticlinorium rather fragmentary, often complicated by a multitude of tectonic faults of different amplitude, and for solving the problems of the geologу of this structure, the sections of the upper reaches of the river Zilim with numerous tributaries are the most favourable. Here, the separate fragments of almost all Karatau Series can be combined into a single continuous section. For sediments of the Zilmerdak and Katav Formations, exposed in the basin of the upper reaches of the Zilim river in the Alatau anticlinorium, a detailed description of the section along the left bank of the Zilim river below the Tolparovo village was given for the rst time. A wellexposed section of these two lower Karatau Formations provides a suf cient understanding of the geological situation of the studied area. This section, given its completeness and continuity, is proposed as a reference for the area under consideration. The sediments of the Alatau anticlinorium are exposed in the westernmost outcrops of the Precambrian on the day surface of the folded region of the Urals, and materials for their detailed study are necessary in order to correlate with age analogs that are widespread to the east (on the eastern ank of the Bashkirian meganticlinorium and in the Uraltau anticlinorium) and penetrated by deep wells to the west (on the Russian platform).

Upper Riphean, Karatau, Zilmerdak, Katav, suite, series, Southern Urals

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