Deikalich Fm

It was distinguished in the Darvaz region in 1938 by N.P. Yermakov under the name of the "molassic varicolored formation". The geographical name was proposed by N.G. Vlasov (1961). In the legend and in the section title, the composition, thickness, and age of the formation are given according to the representations of N.G. Vlasov (1961). Currently, the author, as a result of thematic studies, has obtained new materials on the composition, volume, and age of the formations referred to as the Deikalich Formation (дейкаличской свите).

Synonym: Deikalich suite, дейкаличской свите

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A clear two-membered structure of these formations is established: the lower on is composed of varicolored claystone-like clays with interlayers of sandstones in the upper part; and the upper one of light gray and pink quartz sandstones. On this basis, the lower member is isolated into the Shkeldarin Fm (шкелщtаринскую свиту), the upper member - into the Zarbuz Fm (зарбузскую свиту). It should be noted that back in 1939, A.M. Spasov and I.E. Gubin subdivided N.P. Yermakov's "molassic varicolored formation" into two: the lower - varicolored clayey and the upper - red-colored sandstone. However, in 1940, I.E. Gubin returned to N.P. Yermakov's scheme.