геология и разведка
Preview

Proceedings of higher educational establishments. Geology and Exploration

Advanced search
No 4 (2015)
https://doi.org/10.32454/0016-7762-2015-4

MAIN EDITOR’S COLUMN

GEOLOGY

8-14 354
Abstract
An ecozone Quadrocladus pachyphyllus ... Prilukiella (?) tomiensis has been described in the lower part of the Middle Siberia trap volcanics. It differs very much from the underlying coal-bearing deposits with so called “furrowed” Cordaites and significantly differs from the overlying rocks. On the Russian platform it corresponds to the topmost (Chernigov) floristic complex of the Upper Permian Tatarian series. It is not identified reliably in the unsatisfactory chosen standard section of the non-marine GSSP of Triassic. The units of mountain, plain and seaside sedimentation levels are distinguished as coenozones - separate, independent spatial parts of the ecozone. The woody layer is prevailed with: Quadrocladus pachyphyllus, Elatocladus linearis (mountain), Voltzia (?) avamica, Elatocladus linearis, Quadrocladus pachyphyllus (plain), Pseudovoltzia, Quadrocladus borealis, Q. dvinensis, Geinitzia subangarica (seaside). The grassy level of damp slopes is formed by: Acrostichides linnaeaefolius, Cladophlebis lobifera, Madygenia borealis (mountain), Acrostichides linnaeaefolius, А. tunguskanus, Cladophlebis kaoiana, Madygenia borealis, Pursongia beloussovae, Lepidopteris arctica (plain), Schvedopteris lobata, Madygenia, borealis, Phylladoderma aequalis, Р. annulata, Р. rastorguevii, Fefilopteris pilosa (seaside). Dominants of grassy cover of lowlands are Arthropitys prynadae (plain), Pursongia beloussovae, Tatarina (seaside), Paracalamites triassicum.

MINERALOGY, PETROGRAPHY, LITHOLOGY

15-21 349
Abstract
The objective of the research was to use the data about coal seam, obtained at the stage of exploration, to predict spontaneous combustion of coal. As a result of studying the geological structure of coal seams, physical-chemical research and analysis of statistical data on the spontaneous combustion of coals, geological factors of spontaneous combustion of coal and the boundary values of their parameters varying degrees of danger of spontaneous combustion for a number of basins and deposits were established. The basis of the authors’ methodology is based on ranking the data model and on the idea to classify this data by «proximity» to the reference groups of observations. The transition from the original data of the coal seam to rank scale was carried out using standards (boundary values) of levels of danger of spontaneous combustion of coal. The obtained data were used to construct maps of the prediction of spontaneous combustion of coal fields in «Raspadskaya» mine in Kuzbass.

USEFUL MINERALS, METHODS OF THEIR PROSPECTING AND EXPLORATION

22-29 611
Abstract
The description of the geological structure and composition of Albyn gold ore deposit of Harginskyi ore and placer gold node of Amur province is shown. The ore bodies are shown to be located among the Late Paleozoic weakly metamorphosed formations, to have the shape of tabular deposits and to be consisted mainly of quartz-sericite-albite metasomatic rocks (albitites). The ore minerals are pyrite, arsenopyrite and native gold. Number of sulphides in the ores is less than 2%. Gold is occurred to be both small and dispersed and small and large, its fineness is 880-895 %. The deposit is classified as low-sulfide gold-quartz formations. Spotted paragenetic relation of gold mineralization with dikes and small intrusions of Early Cretaceous age is revealed. The oxidation zone is manifested very weakly. Ore can be processed easily by direct cyanidation.
30-34 919
Abstract
Today we have a huge problem with prospecting new gold-ore deposits and its estimation on deep horizonts, especially in the closed territory. Often we used “analogy” method to make a decision. On that method, we find well known deposit with same type of metallizing process and estimate mineralization of new deposits. Author considered the types of ore-control metasomatite, ore material composition, on the difference deposits of the Khabarovsk Krai: Kutyn and Ozernoe. Irrespective of differences on the deposit geology and geological structure, we can see some common characteristics of ore hosting metasomitite and material composition of gold ores. Basing on those facts we confirm, that Rutin and Ozernoe ore deposits appertain to the same low-sulphide ore formation.

HYDROGEOLOGY AND ENGINEERING GEOLOGY

35-39 530
Abstract
The quality of groundwater for utility and drinking water supply is not always in compliance with the regulatory requirements. Moscow region is characterized by increased concentrations of such components as iron, fluorine, strontium, and others in groundwater. In this regard, usually a special water treatment is used before starting the water delivery process. One of the methods of the correction of chemical composition is the combination of different groundwater from various aquifer systems (which are different with their compositions) in a certain proportions. The article deals with the method of equilibrium thermodynamic modeling for the purpose of researching chemical compositions of groundwater during the process of combination. According to the results of calculations, we obtained the rate of combination of two groundwater aquifers with the resultant composition of combination, which is in compliance with the regulatory requirements.
39-44 369
Abstract
The data on justification of safety of NPP’ placing in Russia in different climatic conditions is analyzed in the first time by results of hydrological monitoring observations. This analysis is based on the joint consideration of comments and recommendations of expert summaries. The necessity of improvement of hydrological monitoring observations system, more thorough use of their results in the data of justification of NPPs safety and during the design of critical values of control parameters is shown. On the basis of the latter, the prompt recommendations on realization of organizational and technical measures of safety provision under catastrophic hydrological events, including floods and freshets.

GEOPHYSICAL METHODS OF PROSPECTING AND EXPLORATION

45-52 509
Abstract
A new approach to the rock thermal property measurements with optical scanning method is presented in the article. The approach provides the numerous high precision non-destructive measurements on full size core samples and core plugs without special aligning optical coating on surface of the rock samples. Recently the coating was the obligatory requirement of the sample preparation and made this procedure sophisticated. The previous procedure could result in intractable alterations of the rock properties also. It is shown that the thermal diffusivity measurement quality does not suffer without special optical coating. The technique of rock thermal conductivity measurements is described which takes into account the various optical parameters of the investigated rock samples. The technique was realized for continuous profiling the rock thermal properties on full size cores without the special optical coating.

MINERAL AND GEOLOGICAL EXPLORATION ECONOMICS

53-59 388
Abstract
A low awareness of the events, influencing on the stocks prices, is an important factor of the decline of the inner investors’ credibility to the investments in risky assets. The article examines the methodological features of the credit assessment of mineral complex enterprises, which are the issuers of the securities market. An approach to assessing the creditworthiness of corporate issuers is given, which includes theoretical and methodological basis and methodology for assessing credit rating, being an an integrated credit risk characteristic, reflecting the likelihood of untimely or incomplete fulfillment by the issuer of its obligations. Boundaries of the intervals of possible values of analyzed factors of quantitative analysis and distribution of the coefficients for the intervals of possible values for assessing the financial condition of the issuer are designed.

LEGAL ISSUES IN MINERAL RESOURCES EXPLOITATION

60-64 650
Abstract
The two main approaches to legal regulation of subsoil use are characterized. The specifics of solution of this problem in European countries, firstly, in Norway, in Gulf countries, Asian countries, Latin America countries is considered. The importance of the state ownership of mineral resources for the country budget to solve different crucial social-economical problems is shown. Among them there are problems of import substitution, raising the standard and quality of living, limitation of foreign capital expansion for the provision of country national safety.

GEOECOLOGY

65-74 401
Abstract
A specialized system-based monitoring of the subsoil (AMSN) is being created for the first time in the state corporation «Rosatom». The main task is a development of a unified methodical approach. The results of a survey of the system object monitoring of the subsoil at the enterprises of the state Corporation «Rosatom» (51) have been summarized. The most frequently occurring methodological errors in the formation of observational networks and monitoring the condition of groundwater, which lead to unreliable results of the monitoring, have been analyzed for the first time. Criteria has been developed to improve the reliability of the monitoring results, and the scale of the assessment of the existing systems of object monitoring of the subsoil was given by the combination of the following factors: the necessary and sufficient number of observation points; placement of observation points relative to a potential or immediate source of pollution and general geological and hydrogeological conditions; design and technical condition of observation points; compliance to the hydrogeological practice methods of sampling, storage, sample preparation for laboratory studies; compliance of the equipment base and laboratory techniques regulatory requirements for range and accuracy of measurements; methods of processing, stockpiling and storage of results. The design of observation wells has been developed for various types of permeability of water-saturated enclosing rocks. The basic requirements have been developed for the establishment and operation of the observation network, for the method of sampling, for sample preparation, for laboratory equipment and measurement of radiation of groundwater.

GEOLOGIC AND PROSPECTING EDUCATION ISSUES

75-79 468
Abstract
The paper discusses the mam conceptual statements, concerning design of the system of strategic plannin of human resources development in geological sector. The ways of scientific researches in this problem are suggested.

BRIEF REPORTS

80-82 456
Abstract
Margarite of Snezhnoe ruby deposit has been identified and studied as rock-forming mineral, being in paragenesis with ruby on Snezhnoe ruby deposit . It forms two morphological types: large and small scales. Its specific feature is a high content of 2О (1,43-4,37 mass %) and &2О3 (до 1,27 mass %). This finding allows carrying out of more close genetic linkages to those deposits, where margarite was known, such as Mogok (Myanmar), Taplejung District (Nepal), Hunza Valley (Pakistan), Jegdalek (Afghanistan), Kootchinskoye (Urals, Russia) etc.
82-85 332
Abstract
The extremely rare penetration twins of olivine for (031) and (011) in alkaline melanocratic basalts of East Mongolia from the collection of the famous scientist-traveller N.M. Przhevalsky, which is stored in the museum of the department of petrography of St. Petersburg state university. The possible reasons for the appearance of growth twins of olivine are examined. The
86-88 303
Abstract
While transporting the fluid by the pump with constant volumetric supply, the reciprocal effect of pressure loss at different parts of hydraulic line is absent. While transporting the fluid by centrifugal pump, changing of geometrical resistance (contraction, expansion, rotation of the line) at any part of the fluid moving causes the losses of pressure at every part and in the line in whole. Volumetric productivity of centrifugal pump can be calculated by equating of analytic expression of hydraulic characteristic of the pump as the equalization of quadratic regression, and equalization, describing hydraulic description of the network.


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 0016-7762 (Print)
ISSN 2618-8708 (Online)