GEOLOGICAL FEATURES OF THE KOBDINSKY DISTRICT OF AKTOBE REGION OF THE REPUBLIC OF KAZAKHSTAN

Abstract

Annotation. The article describes the geological structure of the Cretaceous massifs and Cretaceous deposits of the Akbulak gully, Kobdinsky district, Aktobe region of the Republic of Kazakhstan. The material for the work was observations and finds made in July 2023.

The materials were studied using experience and techniques used in classical geology and paleontology. An important feature of the structure is the exposure of Mesozoic sediments. Geomorphologically, the Akbulak gully belongs to the Subural Plateau, which is composed mainly of Upper Cretaceous deposits that lie almost horizontally. The landscape structure of the plateau has its own characteristics. Cretaceous deposits are represented by sands, sandstones, silts, siltstones, and clays with interlayers of dolomites and marls. Remains of invertebrate fossil fauna were found, such as ammonites Dimorphoplites niobe, sea urchins Phymosoma circinatum (Lamarek, 1816), cephalopods Belemnellocamax, Belemnitella lanceolata Schloth, Belemnitella americana Mort. Key words: Akbulak, ravine, exits, array, plateau, relief, structure, Kobdinsky district.