Geologicheskii Vestnik

The object of the study was the sections of the Katav and Inzer Formations in the Inzer Synclinorium in the Southern Urals. The sediments of the studied formations of Karatau Group in the Inzer synclinorium are most completely represented due to a combination of natural outcrops and road cuts exposed along the Ufa — Inzer — Beloretsk highway. Detailed descriptions are given and sketches are made of sections of the Katav and Inzer Formations on the western and eastern wings of the Inzer synclinorium. The use of road quarries and excavations made it possible to significantly supplement the understanding of the material composition and thickness of the rocks that make up the formations, and their relationship. Gradual transitions with underlying (Zilmerdak) and overlying (Inzer) strata characteristic of the Katav Formation indicate the completeness of the stratigraphic volume of the Katav Formation, considered as a hypostratotype. For stratotype sections of the Inzer Formation in the area of Inzer the settlement, a detailed description is given for the first time, the thickness of the deposits of the Inzer Formation in the described fragments of sections in the area of the settlement is calculated and the location of these sections in the stratoregion is indicated.

Formation, Katav, Inzer, Upper Riphean, Karatau Group, Inzer synclinorium, Southern Urals

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