Geological position of Ediacaran terrigenous rocks in the territory of the Middle Dniester region of Ukraine

Abstract

The results of summarizing literary data and own observations on the distribution of terrigenous rocks — sandstones, conglomerates, siltstones in the deposits of the Ediacaran of the Middle Dniester region are presented. Terrigenous complexes of various compositions were identified in the deposits of the Grushka Formation, which directly overlay crystalline basement rocks. Rocks of psammitic and siltstone structure in various pro- portions, thicknesses, granulometric, and mineral composition were identified in the deposits of the Mogylyiv (Olchedaiv, Lomoziv, Yampil beds), Yaryshiv (Bernashivka beds), Nahoryany (Dzhurdzhuvskabeds), Danylivka (Pylypybeds), Zharnivka (Kuleshivska beds), Krushanivka (Kryvchany, Durniakivska beds), and Studenytsia (Polyvaniv beds) formations. The Olchedaiv, Yampil, and Lomoziv sandstones are the most widespread and accessible for further research. These rocks mostly consist of quartz, feldspar-quartz composition, have a platy structure and light-yellow coloration. The thickness of the sandstones in the most complete sections reaches 25—30 m, which is economically advantageous for extraction. The next stage of the study involves selecting samples for laboratory research to refine the peculiarities of the chemical composition, texture, structure, physical-mechanical properties, as well as determining parameters for optimal use.