The article provides information on gypsum deposits in the Perm region. The need of various industries for gypsum is described. The purpose of the work is to determine the qualitative characteristics and physical and mechanical properties of gypsum rock. The geological structure of the Zuevskoye deposit of building gypsum is given. A description of the useful strata is given, divided into sections and types of deposits, as well as a description of the internal overburden. The qualitative characteristics of the mineral are given based on the results of geological exploration. The quality of the gypsum is assessed based on the main evaluation parameters corresponding to the requirements of the main regulatory documents: GOST 4013-82 “Gypsum and gypsum-anhydrite stone for the production of binders”. Specifications and GOST 125-79 “Gypsum binders”. Specifications. To determine the suitability and grade of the gypsum, the chemical composition was determined. Calculations of average weighted contents of chemical components were performed for enlarged intervals equal to half of the mining bench (5-7 m). In addition, the physical and mechanical properties of gypsum rock were determined: water absorption, bulk density, specific gravity, volume porosity, true porosity, and ultimate strength in a dry state. Based on the results of the work, it was revealed that the chemical composition of the gypsum layer of the Zuevsky site is diverse, which is caused by uneven hydration of anhydrites in plan and in section, as well as the presence of various carbonate impurities and karst. Gypsum of the Zuevsky site is heterogeneous in its physical and mechanical properties. The strength of gypsum in air-dry averages to 16.9 MPa, and in accordance with GOST 125-79, gypsum rock has a grade of G-16. The raw materials of the gypsum thickness meet the requirements of GOST 4013-82 “Gypsum and gypsum-anhydrite stone for the production of binders” and GOST 125-79 “Gypsum binders”. According to the complexity of the geological structure, the Zuevskoye deposit is assigned to group II. The useful thickness in the area is extremely unstable in thickness and quite consistent in quality.

The article deals with the issues of state regulation in the field of subsoil and nature management. The aim of the work is to analyze the current legislation in relation to complex nature management, as well as to reveal a new view of rational nature management and development of mineral resource base. The article offers recommendations for improving the system of state regulation of these relations. It is noted that the sphere of state management, associated with obtaining licenses for the integrated development of natural resources, is the most promising and correct direction in terms of ensuring the rational use of natural resource potential of the territory. This approach allows not only to protect, but also to effectively use various types of natural resources, and not to be limited only to separate objects of natural resources use. The use of such an approach will increase the economic efficiency of development of natural resources of the territory through minimizing investments in infrastructure development, thereby increasing the profitability of development objects. We propose recommendations for the improvement of normative-legal acts that allow to ensure the integrated development of natural resource potential within the “territory of integrated nature management”. To achieve the goal, we used the methods of systematic, logical, as well as analytical research, namely: the analysis of the normative legal base regulating the activities of participants of relations in the field of nature management at the federal level, the method of comparison, and the methods of deduction and induction.

The article presents the results of studing the mineral composition of ores and host rocks of three manifestations of gold ore mineralization in the Uryinsky ore field, which is part of the Chay-Yurinsky ore-placer unit of the Berelekh mineralogical region of the Yano-Kolyma metallogenic belt. Mineral and petrographic studies were carried out according to the traditional method with an emphasis on the degree of metasomatic changes and deformations of the constituent minerals. It was established that gold ore mineralization is paragenetically related to hydrothermal-altered dikes of the Nera-Bohapchinsky complex (J₃nb), which in composition correspond to quartz diorite-porphyrites and diorite-porphyrites. Metasomatic changes are represented by two types of transformations: propylitization (chlorite, sericite, epidote, albite) and widely developed beresitization (quartz, sericite, chorite, carbonate, pyrite). Veins of quartz, chlorite-carbonate-quartz, carbonate-quartz, albite-carbonate-quartz composition with ore mineralization are superimposed on metasomatically transformed rocks. Three stages of ore formation were identified – metasomatic, hydrothermal and hypergenic. During the metasomatic stage, leucoxene and xenomorphic pyrite I, (less commonly) pyrrhotite, chalcopyrite and sphalerite (with a micro-mixture of Cd) are deposited in the rock. The hydrothermal stage is divided into four stages (plutonogenic – I, II) and volcanic-plutonogenic (III, IV); three are productive. The first stage is associated with the development of veins of drusoid quartz I, to the cracks of which clay minerals and limonite are confined; in the second stage, bismuth-containing galena and high-grade gold (929 ‰) are deposited; the third stage is characterized by the formation of quartz (II) feldspar veins with carbonate nests and the inclusion of short-prismatic arsenopyrite and pyrite II. Polysulfide minerals and native gold (692 ‰) were found along the cracks of the cataclase and in the caverns of these minerals. In the fourth stage, veins of chalcedony-like quartz are formed, containing rare inclusions of native gold, and framboidal pyrite, marcasite and long-prismatic arsenopyrite are deposited in the rock. The described manifestations of the Uryinsky ore field in terms of mineral composition and host medium can be attributed to the gold-quartz ore formation of the dyke type

The article raises the question of the expediency of studying the possibilities of developing heavy oils and bitumen in the upper part of the section in the northwest of the Republic of Sakha (Yakutia). The Siligir-Markhinsky bitumen field is identified as the most promising object byabundance of manifestations and geographical location. Brief information is given on the lithological and stratigraphic section and the main tectonic elements of the study area. Anomalous thickness of the section with negative temperature (up to 1450 m) is indicated as a distinctive feature of the studied territory. The features of the distribution of epigenetic oil and bitumen occurrences along the section and the influence of hypergenesis processes on the individual and group composition of oils and bitumen are presented in detail. It is concluded that the most studied and attractive object for the extraction of heavy oils, malts and asphalts are the rocks of the Markhinskaya and Morkokinskaya suites in the immediate vicinity of the Udachnaya kimberlite pipe. Physicochemical characteristics of oil sand bitumens are given, indicating their mobilityin the temperature conditions of the upper part of the section of the region under consideration. It is proposed to use horizontal drilling in combination with multiplicative petrofracturing for the development of oils and bitumens of the Siligir-Markhinsky field. Direct signs of oil and gas contentestablished during testing of exploration well No. 2-P drilled in non-structural conditions are presented. A possible reason for the failure to obtain oil and gas inflows is the poor quality of the opening of productive layers. It is concluded that the prospects for oil and gas content of the Markhinsky arch along the lower part of the section are preserved, taking into account the placement of the exploratory well in non-structural conditions and limited experience in opening oilbearing strata. It is noted that the necessity of monitoring the stability of gas flow rate with an increased hydrogen content in the area of the Udachnaya pipe to study the possibilities of hydrogen production

The article is devoted to the study of the design features of hydrogeological wells at the Levoberezhny site, intended for the burial of drainage brines from the Udachnaya pipe deposit in permafrost conditions in Western Yakutia. The relevance of the work is due to the need to minimize the negative impact of diamond mining on the fragile ecosystem of the cryolithozone. The main attention is paid to the problem of utilization of calcium chloride brines, which have a devastating effect on the stability of rocks and mining equipment. The article presents the results of drilling 8 wells with a depth of 300 m, performed using a mobile drilling rig UKB-5S. Drilling methods are described, including rotary and impact-rotary drilling using compressed air as a cleaning agent, which made it possible to achieve a core yield of at least 80 %. The design of wells is considered in detail, including casing fastening and cementing the annular space to ensure the stability of the trunks under the influence of brines. Special attention is paid to technological solutions, such as the use of perforated columns with slit filters to prevent rock collapses and thawing. The hydrogeological studies carried out, including the methods of bush filling, have confirmed the high absorption capacity of fractured permafrost rocks, which makes the Levoberezhny site suitable for the disposal of drainage waters. The results of the work have shown that the developed well design and applied drilling technologies ensure the stability and durability of wells in difficult geological conditions. The data obtained can be used for further pilot production and predictive calculations aimed at safe and efficient disposal of drainage brines.

Currently, many large fields with a massive gas cap have an acute problem of breakthrough gas from gas caps produced during the development of oil from thin oil rims. One of the possible ways to limit gas production and reduce the gas factor is periodic operation of wells. To accelerate the alignment of the gas cone and return the fund to production during periodic operation, re-injection of degassed oil into a reservoir is used. The paper analyzed the field experience of periodic operation of wells with the injection of degassed oil. In order to perform high-quality comparative calculations of different options, hydrodynamic modeling of periodic operation of wells and re-injection of oil into the reservoir was used based on the digital model of the Srednebotuobinskoye field (SBOGCF). Based on the modeling results, the main patterns were identified. When modeling periodic well operation, the number of shutdowns and shutdown duration were used as variable indicators; when modeling periodic operation with degassed oil injection, the volume of injected  degassed oil was added to the variable indicators during modeling. The cumulative oil production was used as a control indicator. The modeling results show that periodic well operation and degassed oil injection lead to an increase in cumulative oil production for all calculation options. At the same time, if we compare the options with periodic operation with the option of periodic operation with oil reinjection into the reservoir, then oil reinjection into the reservoir in volumes of up to 100 m3 does not lead to additional oil  production compared to pure periodicity.

The article is devoted to a relevant problem of landscape-ecological planning. The purpose of the article is to analyze the possibilities of applying the concept of landscape polystructure in landscape-ecological planning in the territories of traditional nature use. In Neryungrinsky district of South Yakutia there are still territories of compact residence and traditional nature use of indigenous small-numbered peoples of the North – Evenks; in addition, there is an active industrial development of the territory. On the example of the Neryungrinsky district of Yakutia the characteristic features in the spatial polystructural organization of the landscape are identified and described. The polystructural approach in landscape planning includes different ways of describing the spatial structure of the landscape and, accordingly, implies the use of different approaches and methods in their study. Special attention is paid to morphological and basin structures of the landscape. Remote sensing data interpreted using GIS tools were used to determine the morphological structure of the territory. The construction of river basin boundaries was carried out using automated methods of geoinformation technologies, which made it possible to determine the number of second-order river basins in the Iengra River watershed, establish their average gradient and identify pollution risk situations. The use of the concept of polystructure in landscape planning makes it possible to find a harmonious balance between industrial development, traditional economy and ecological stability in the same territory. Industrial development creates a number of problems in the territories of traditional nature use and affects the reduction of reindeer pastures. However, with competent landscape planning it is possible not only to preserve the traditional way of life of local residents, but also to add a number of additional opportunities to it.

Adaptation to climate change is seen as an economic task, but it is based on the climatic conditions of territories and their expected changes in the medium term. The purpose of this article is to identify relevant approaches to assessing climate risks based on research data and expert assessments, selecting relevant climate variables, and forecasting the expected (probable) level of climate risks using global climate models. The work uses general scientific methods of analysis, synthesis and scientific generalisation. The analysis of existing regulatory and legal documentation in the field of regional adaptation has been carried out, and the limitations of its requirements have been shown, primarily the emphasis on retrospective analysis of risks and a closed list of indicators characterising the level of their danger. One of the main tasks to be solved in the process of adaptation planning is to find a correspondence between risk and climatic variables that determine its probability of realisation and the level of danger. Approaches to determining the list of regional climatic variables, information about which is necessary for planning adaptation measures, within the framework of the climate or sectoral approach, using standard lists of climatic variables and indices, formed by the World Meteorological Organisation, or on the basis of expert consensus, are considered. It is shown that regional climate forecast is one of the main components in solving the problem of adaptation to climate change, and the methods of forecasting and improving the spatial accuracy of such a forecast (statistical and dynamic downscaling) are considered. The proposed methodological approaches are intended for use in the practice of planning regional adaptation measures, including in the territory of the Republic of Sakha (Yakutia), and in updating the Strategy of Socio-Economic Development of the Republic of Sakha (Yakutia).