The article provides new geochronological and isotope-geochemical data, which make it possible to identify two groups of intrusive rocks in the southern Omolon Massif and to clarify their geodynamic position. The petrological-geochemical and isotope-geochronological aspects of the evolution of magmas are discussed. Based on the study, the age of the Namyndykan Complex was corrected, and the age of the Victorinsky complex was confirmed as Late Cretaceous.

The paper presents a layout of the Interseries Correlation Chart of Carboniferous deposits within the limits of the Norilsk, Anabar-Vilyui and Angara-Yenisei legends to a series of sheets of the State Geological Map at a scale of 1 : 1,000,000, the third generation. The zoning map was compiled taking into account the customization of the structural-facies division used for relevant serial legends. The age and areas of the Carboniferous units mapped in the Siberian Platform were updated and refined for compiling sheets of State Geological Maps at scales of 1 : 1,000,000 and 1 : 200,000, serial legends and amendments to them. Local stratigraphic units are described.

The authors studied the sequence of major elements formation in this region during Early Caledonian, Late Caledonian, and Hercynian orogenic processes to understand location patterns of Rudny Altai structures in the Altai-Sayan Fold Area. Geological and geophysical constructions were made by the authors using the geophysical «radial-zonal model of the earth's crust» [24]. Blocks with continental crust and interblock zones separating them were identified based on a qualitative interpretation of geophysical fields and their transformations, including using lineament analysis. At the stage of geotectonic interpretation of the data set, within the concept of lithospheric plate tectonics, geophysical blocks are interpreted as paleoplates with continental crust; sutures, rifts and regional shears correspond to interblock zones. Constructions in the lateral dimension are accompanied by a deep geological and geophysical (geotectonic) section along a fragment of the Basalt regional geophysical profile. The performed paleoreconstructions allow the solution of the problem of clarifying the geodynamic processes that led to the formation of structures and controlled the location features of endogenous mineralization in the Zmeinogorsk ore district.

Interpreting results of chemical analyzes and features of the distribution of rare and rare earth elements in the sediments of the Early Ordovician sandy-silty sequence at the base of the Paleozoic section of the Manitanyrd Ridge, the Polar Urals, made it possible to establish that the accumulation of the terrigenous sequence took place in epicontinental setting in moderately warm climate due to erosion and redeposition of mostly weakly weathered rocks of the Late Riphean-Vendian basement. It has been assumed that felsic igneous rocks related to the Cambrian pre-rift uplift and rifting were the main source of clastic material.

Age, stratigraphic division, boundaries and lithological composition of oil and gas complexes have been clarified, and their names have been revised based on the analysis of materials of state geological mapping for oil and gas provinces of the Russian Federation. All the clarifications are shown in correlation patterns of oil and gas complexes in oil and gas provinces of Russia, included in the metallogenic blocks of legends to series of sheets for the State Geological Map 1000/3.

Geological and structural features and gold potential of the Oktyabrsky Gold Placer Center, the Amur Gold Province, are described. The center consists of an ensemble of six ore and placer clusteres: Oktyabrsky, Yasnensky, Adamikhinsky, Sokhatino, Nizhnegarsky, and Nizhneselemdzhinsky. About 130 tons of gold have been produced in the placers of the center since the middle of the last century. The prospects for further development of placers are determined. They consist in the introduction of new technologies, which ensure the extraction of fine gold fractions and thereby involve the development of poor and technogenic placers. It is shown that the future of the Oktyabrsky Gold Placer Center depends on the discovery and development of new gold deposits of gold-quartz, gold-sulfide-quartz, skarn and gold-mercury (Karlin type) formations.

The paper provides information on geology, structural position, uranium potential of graphite-bearing schist of the Tien An deposit. Exploration criteria and indicators for uranium mineralization are determined. Conclusions are drawn about prospects of economic mineralization of the predicted minable type.

The relevance of the problem, some features of hydrogeological and engineering-geological processes caused by natural and man-made conditions during mining operations are discussed (case study of highland facilities of Nurata-Zarafshan ore deposits). The investigating procedure includes studying not only the location of a sinkhole (collapse), but also sections adjacent to the sinkholes, since an important role in their formation is played by groundwater flows with active springs. Features of the development of strength and deformation properties of rock masses during the formation of landslide sinkhole collapses, which result in changes in mining and technical conditions of deposit development, are studied. Sinkholes formed because of ground failure in mine workings under the impact, mainly, of the hydrogeological and engineering-geological activities in the mining area are described.