In the Orenburg Urals, within the central and western, instrumental with the Russian platform part of the Pre-Ural marginal trough, there are carried out prospecting and exploration works for oil and gas, productive horizons of which are confined mainly to sediments of Permian and Carboniferous age.

We studied the deposits of the Artinskian Stage in two regions of the Urals: in the Middle Urals in the basins of the Yuryuzan, Ufa, Sylva, Kosva and Usva pp.; in the South Urals in the zone of the advanced folds of the Aktobe, Orenburg and South Bashkir Urals

The stratotypic section of the Asselian Stage is considered to be the section between the Assel and Uskalyk rivers, left tributaries of the B. Ik River. The section under the name “Section in the Uksalyk River basin” was first described by V.E. Ruzhentsev in 1951. Our studies have established that the Asselian Stage is characterized in stratotype b. Е. Ružentsev starting from the middle fusulinid zone (Schwgerina moelleri and Pseudofusulina fecunda) of the Asselian Stage, which is confirmed by the fusulinid complex given by V. E. Ružentsev for layers 2 and 4: Pseudofusulina cf. parafecunda Scharn et Scherb., P. conspecta Scham. et Scherb., Schwagerina vulgaris Scherb., Pseudoschwagerina uddeni Wedet Knik ., P. primigena Raus ....

The Aidaralashi section is located in the Aktyubinsk Priuralie on the right bank of the Aidaralashi River, a left tributary of the Zheman-Kargal River, 7-8 km downriver from the Novorossiyskiy settlement. The section reveals a thick (1200 m) thickness of sandy-clayey fleishoid deposits, in the composition of which the authors distinguish three horizons of the Asselian Stage, corresponding to three fusulinid zones ...

Deposits of the Artinskian Stage in the Middle Urals have been studied in the basins of the Yurezan, Ufa, Sylva, Kosva, and Usva rivers.

During the study of the Lower Permian sediments of the Southern Urals, massive reef algal limestones were encountered in the Artinskian Stage roof, which are analogous to the reef algal limestones of the Sylva River basin in the Middle Urals in terms of their position in the section, reef-forming organisms, and fauna complex. They are most well exposed in the Shafeevsky section.

For many years, the stratigraphic scheme of the Permian deposits of the Urals has been based on the scheme of D.M. Rauser-Chernousova [1940]. It was developed in accordance with the distribution of individual foraminifera complexes along the section. Many of the horizons identified by D. M. Rauser-Chernousova retained their name and were adopted in the Unified Scheme of Permian sediments of the Urals in 1962, and their sections are considered stratotypic.

On August 9, 1968, the Leningrad Mining Institute suffered a heavy loss: Vitaly I. Bodylevsky, Professor of the Department of Historical Geology, passed away. Vitaly Ivanovich gave fifty years of his life to the Mining Institute and during these long years trained and educated many hundreds of geologists, became a leading specialist in the field of paleontology and stratigraphy of the Mesozoic, a scientist of world renown.

In 1963, the study of reference sections of the Lower Permian of the Western Urals provided an opportunity to study in detail complete, well exposed, faunistically richly characterized sections of the Shvagerian horizon of the Asselian Stage. Until then, complete sections of the Schwagerian horizon were not known on the western slope of the Middle Urals ...

Southern Altai is a promising polymetallic region of Altai. Seven deposits and a large number (about 100) of points of lead-zinc and copper mineralization have been discovered within its limits. The polymetallic mineralization is spatially closely related to deposits of the Kultabar Formation of the Koblenz-Eifel age. Younger and older sediments are generally of little interest with respect to polymetallic mineralization. Thus, the Kultabar Formation is the main ore-bearing sequence of polymetallic mineralization in the Southern Altai.

The Narymo-Bukhtarminskaya depression separates the system of South Altai ridges from the Mountain and Ore Altai. It is a large depression of a clear-cut shape, extending in latitudinal direction for almost 150 km with a width from 1-2 to 10-12 km.