CONTENTS № 12/2021 |
GEOLOGY & METHODICS OF PROSPECT & EXPLORATION OF DEPOSITS |
|
УДК 551.7 Ermakov V.A. (IEP RAS) // ermakov.v@gmail.com Kremenetskiy A.A. (IMGRE) // nauka@imgre.ru PRE-MESOZOIC BASEMENT OF THE KURIL-KAMCHATKA VOLCANIC ARC: ITS COMPOSITION AND CHRONOLOGY OF FORMATIVE STAGES The current concepts on heterogeneity and heterochrony of the pre-Upper Cretaceous basement of the Kuril-Kamchatka volcanic arc are considered. Available U-Pb dates of zircons from the basement rock fragments found in Cenozoic lavas and other products of recent volcanic eruptions are summarized and presented. The continental nature of the the Kuril-Kamchatka region basement is confirmed by the identity of the established age intervals of magmatism (2024–1124; 471-325 and 219–127 Ma) with the formative stages of the Verkhoyansk-Chukchi mobile belt. Keywords: foundation of the Kuril-Kamchatka arc, stages of formation. Р. 3-8 |
|
УДК 553.341+553.495+553.481’43+553.411 Shumilin M.V. (Rosatom expert) // shumilin.zbk@gmail.com URANIUM CONT ENT OF BLACK SHALES AND «FO RGOTTEN» ORE OCCURRENCES OF NOVAYA ZEMLYA Black shale formations often contain superclark contents of uranium and other metals, which are considered syngenetic. They also соntain industrial deposits of uranium, nickel-copper and gold, which are considered the result of processing syngenetic concentrations by subsequent metamorphic or exogenous processes. Uranium deposits of this type (Ronneburg ore field) were exploited in Germany in the 1960–1980 and produced about 70 thousand tons of uranium. Similar ore occurrences are known on the Yuzhny Island of Novaya Zemlya, but they have not received a reliable estimate and have dropped out of state records. At present, in connection with the ongoing policy of the development of the Arctic regions of Russia and the creation of a mine at the Pavlovskoye polymetal deposit, it is advisable to revise and to receive a new estimate of these objects. Keywords: black shales, deposits of uranium, nickel-copper, gold. Р. 8-15 |
|
УДК 553.411 (571.61) Stepanov V. A. (NIGTTC FEB RAS) // vitstepanov@yandex.ru Melnikov A.V. (IGIP FEB RAS) // Melnikov_Anton1978@mail.ru HISTO RICAL CENTERS OF ORE GOLD MINING IN THE AMUR PROVINCE It is shown that the Amur province has historically developed three centers of ore gold mining — Western, Southwestern and Eastern. They are confined to the central part of the province, represented by the collision junction of the Aldan-Stanovoy, Mongol-Okhotsk and Amur geoblocks. The regional faults bounding the geoblocks appear to have served as ore-bearing structures. The centers differ in the number, parameters, and formational affiliation of gold deposits, the amount of gold produced, the duration of gold mining, and the ratio of ore and placer gold produced. It is assumed that these centers will continue to play the role of the main suppliers of ore gold. The most promising are the South-western and Eastern centers. Keywords: gold mining center, province, gold deposit, placer, gold ore formation. Р. 15-23 |
|
УДК551.251:553.94 (575.1) Omonov Kh.A. (Uzbekistan temir yullari) // omonov.1979@list.ru METAMORPHISM AND ITS EFFECT ON THE DISTRIBUTION OF IMPURITY ELEMENTS (USING THE EXAMPLE OF COAL OF THE REPUBLIC OF UZBEKISTAN) The influence of regional and contact metamorphism of coals on the geochemical spectrum of coal deposits of Uzbekistan is considered. It is established that the processes of regional metamorphism, considered on the example of Middle Jurassic coal deposits of Surkhandarya basin, lead to an increase in the content of most elements of impurities in coals. When studying the contact impact of magmatic bodies on coal, by the example of Shargun, Boysun, Kugitang, Sanzhar and Hauz deposits, a zone of depletion of coals by elements impurities, measured by the first centimeters, is revealed. Keywords: сoal, Uzbekistan, coal metamorphism, elements of impurities. Р. 23-26 |
GEOPHYSICS |
|
УДК 550.370 Shkirya M.S. (Irkutsk National Research Technical University) // shkirya.ms@gmail.com Badminov P.S. (Institute of the Earth’s Crust) // prokop_sbad@mail.ru Tereshkin S.A.(Irkutsk National Research Technical University) // stereshkin@geo.istu.edu Bashkeev A.S. (Irkutsk National Research Technical University) // abashkeev@geo.istu.edu Davydenko Y.A. (Irkutsk National Research Technical University, Institute of the Earth’s Crust, Gelios) // davidenkoya@gmail.com THE ROL E OF ELECTRICAL RESISTIVITY TO MOGRAPHY AND ELECTROMAGNETIC SOUNDING IN SEARCH AND ASSESSMENT WORKS FO R THE WATER SUPPLY OF OZERNY GOK The purpose of the search and evaluation hydrogeological works in the basin of the Zaza River was to provide technological water supply to the objects of the Ozerny GOK. Two methods electrotomography and the method of electromagnetic sounding and induced polarization (EMS-IP) were used to define hydrogeological wells. Drilling, logging and experimental filtration woks confirmed the watered fault zones, the boundaries of permafrost were determined, in which interpermafrost taliks and a layer of “sluggish” permafrost were identified, characterized by low values of electrical resistivity. Keywords: subpermafrost water, faults, groundwater resources, water supply, pulsed electrical prospecting, electromagnetic sounding, electrotomography, fault zone. Р. 26-34 |
HYDROGEOLOGY & GEOLOGICAL ENGINEERING |
|
УДК 528.02 Boreysha E.V. (MGCU) // elena.boreysha@mail.ru ANALY SIS OF PRISM REFLECTO R ERRORS IN DETERMINING COORDINATES OF POINTS INVISIBLE FROM TACHEOMETER INSTALLATION PLACE DURING KARST DIPS EXAMINATION It is shown how a prismatic reflector is used for research purposes, as well as the results of mathematical analysis of errors that occur when using a prismatic reflector. Mathematical analysis of errors is necessary to determine the coordinates of points located in the zone of a mine-type karst formation that is invisible from the point of standing of the total station. The possibility of using the device during engineering surveys for construction is justified. Accuracy calculations using the theory of measurement errors are described. Formulas for calculating the error (UPC) of determining the coordinate differences of the observed marks are presented. The value of the mean square error (UPC) of determining the angle of inclination of the reflector that dominates the measurements is obtained. Keywords: mathematical justification, analysis of additional errors, mean quadratic error. Р. 34-37 |
TECHNIQUES & TECHNOLOGY |
|
УДК 549:551.311.231 Lapin A.V. (IMGRE) // lapin@imgre.ru Kulikova I.M. (IMGRE) // kulikova@imgre.ru Nabelkin O.A. (IMGRE) // muldefw@yandex.ru ZIRIANITE — A PRODUCT OF THE FRACTION ATION OF RARE EARTH IN THE CRUSTS WEATHERING OF CARBON ATITES Chuktukon deposit of crusts of weathering of carbonatite exposed fractionation of rare earth elements in surface horizons of the crust due to oxidation of cerium, its extraction from monazite and settling as independent selective phase zirianite CeO2. It was determined wide distribution of zirianite mineralization of similar type in surface horizons of laterite crusts weathering of different rocks. It allows to consider zirianite as a typomorhic mineral of surface faces of laterite crusts of weathering of not only carbonatites, but also of various TRcontaining rocks. Keywords: weathering crusts, rare earth elements, fractionation, cerium, zirianite, monazite. Р. 38-44 |
|
УДК 622.24.051.64 Neskoromnykh V.V. (Institute of Mining, Geology and Geotechnologies of the Siberian Federal University, Krasnoyarsk) // sovair@bk.ru Popova M.S. (Institute of Mining, Geology and Geotechnologies of the Siberian Federal University, Krasnoyarsk) // alleniram83@mail.ru PROSPECTS FO R THE DEVELO PMENT OF GEOLO GICAL EXPLO RATION DIAMOND ROCK CUTTING TOOL S A high-quality drilling tool, optimally selected according to the geological conditions of work, is one of the guarantees of reliable results of subsoil exploration. Achievements in the synthesis of rough diamonds open up broad prospects for the creation of new rock cutting tools. The development of designs for a single-layer diamond drilling tool reinforced with a large single crystal solves the problem of effective destruction of medium-hard rock. The results presented in the article show the possibilities of: using synthetic diamond as a cutter of a drilling tool; solving technological problems by modifying the design of the tool. Keywords: synthetic single crystal; singlelayer crown; flushing system; rock cutting tool. Р. 44-48 |
MANAGEMENT & ECONOMICS |
|
УДК 338.45 Dadykin V.S. (Bryansk State Technical University) // dadykin88@bk.ru DEVELO PMENT AND FO RMALIZATION OF THE SUBSURFACE USE MANAGEMENT MODEL AT THE REGION AL LEVEL The issues of the application of geoinformation technologies in the process of organizing subsurface use in the scientific and practical literature have been studied in sufficient detail. At the same time, the issues of creating an integrated information and analytical system capable of providing information support in the process of making management decisions on subsurface use remain insufficiently studied. The purpose of this article is to model the subsurface management system at the regional level and to further formalize the model of the subsurface management system at the regional level, which is the basis for the development of an appropriate web application, which is a cloud service-a decision support system (DSS) «Nedra». Keywords: subsurface use, decision support system, management model, systems theory. Р. 48-52 |
HISTORIOGRAPHY |
|
УДК 061.62+550.8:553.91:661.666.2 Lugovskaya I.G. (VIMS) // lig_vims@mail.ru Pechenkin I.G. (VIMS) // vims-pechenkin@mail.ru Yakushina O.I. (VIMS) // yakfibio@gmail.com DEVELO PMENT OF THE GRAPHITE MINERAL RESOURCE BASE IN RUSSIA AND THE ROL E OF THE INSTITUTE OF MINERAL RESOURCES SPECIALISTS IN ITS DEVELO PMENT The article is dedicated to the history of the graphite mineral resource base development and the formation of the graphite industry in the 1920–1930th. The leading position and significant role of the Institute geological exploration and technological works at the Botogolskoye and Kureyskoye deposits is emphasized. The authors analyze a system approach to the physicochemical properties study of raw graphite which allowed not only to evaluate raw graphite quality, but also to develop industrial processing methods, as well as technology of pure graphite production. As a result, by 1937, the task of sustainable supply of domestic raw graphite to industrial enterprises was successfully solved, their import dependence has been eliminated, and prospects for exporting domestic graphite products opened up. Keywords: graphite, graphite deposits, exploration, complex method, artificial graphite, graphite industry, Eastern Siberia. Р. 53-64 |