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Geoinformatics: Theoretical and Applied Aspects 2020
- Conference date: May 11-14, 2020
- Location: Kyiv, Ukraine
- Published: 11 May 2020
41 - 60 of 151 results
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Peculiarity of elastic characteristics of sedimentary SiO2, zeolite, foam polystyrene
Authors A. P. Onanko, D. V. Charnyi, Y. A. Onanko, M. P. Kulish, O. P. Dmytrenko and S. A. PopovSummaryThe most pronounced types of acoustic symmetry are found in sandstones SiO2, but in limestone CaCO3 samples exhibit the least pronounced symmetry type and the lowest value of the integral anisotropy coefficient Aμ. The highest values of phase velocities V and elastic constants Cijkl were found. The measuring of internal friction background in sedimentary SiO2 after mechanical, heat treatments gives information about the changing of defect nanostructure and the thermoelastic strains fields. The broadening of internal friction maximum represents the relaxation process of structural defects new types.
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Retrospective monitoring of changes in land areas under the quarries of the Irshan Mining Plant based on the analysis of different space images
Authors S. I. Tymchenko, M. S. Kovalchuk and I. M. BaysarovychSUMMARYRetrospective monitoring of the change of land areas under the quarries of the Irshan Mining plant was carried out. The Landsat 4–5 and Sentinel-2 space imagery were used to determine the trend of changing land areas incorporated by the quarries. Studies have shown that the area of disturbed quarries land is growing annually and increased by 330.12% during 2005–2018.
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GIS technology in the geological and technological modeling of iron ore deposits
Authors O. V. Plotnikov, M. M. Kurylo and V. S. StapaySummaryGeological and technological mapping is one of the main areas of activity of the geological service of mining enterprises. It makes it possible to assess the reserves of technological types and varieties of ores, their spatial distribution within deposits, and to carry out rational, complex development and processing with a forecast of geological and technological properties. Technological mapping’s efficiency is provided with using of geological and technological models of the deposit. These models were developed in the process of structural and technological mapping of BIF deposits within the Kryvyi Rih region.
To link the structure between the ledges, one of several options is selected: matching using polynomials, polyharmonic functions, or cubic splines. The experience of BIF deposits mapping within the Kryvyi Rih region shows that the most preferable results are obtained using cubic splines.
For deposits with a complex structure, the combination is carried out taking into account the structure of the deposit (the presence of tilted folds, breaking faults). Better results are obtained using interpolation splines. Deposit’s models done with this method in the best way describe geological structures. In areas of deposits with highly developed multi-order folding or complicated by folds of drawing, good results are obtained by interpolation using polyharmonic functions. The creation of geological and technological maps and sections using polynomials gives acceptable results only in certain sections of deposits characterized by monoclinic or slightly folded beds of layers of ferruginous quartzites and schists, not complicated by large folds of fractures.
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Three-dimensional model as the basis for exploration planning (as an example, the Prutivka copper-nickel deposit)
By N. BariatskaSummaryThe area of use of the three-dimensional deposit model depends on the confidence and accuracy of the initial data. Models based on retrospective (historical) data can be used to prospective assessment of the deposit and exploration work planning. These capabilities are demonstrated by the example of the Prutivka copper-nickel deposit.
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The use of retrospective data for creating 3D models on the example of the Balakhivka graphite deposit
By N. SafronovaSUMMARYThe creation of an electronic archive, database of retrospective data and their use for creating 3D model is considered on the example example of the Balakhivka graphite deposit.
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Stratification analysis of productive layers of BIF deposits based on Markov chain theory
Authors O. V. Plotnikov, M. M. Kurylo and V. S. StapaySummaryPrecambrian ferruginous-siliceous formations are characterized by heterogeneous stratification from a few millimeters to the first hundreds of meters. Stratification is due to changes in sections of layers composed of various natural varieties of ores and waste rocks (magnetite, hematite, quartz, silicate, carbonate and their combinations, as well as schist).
During the exploration and exploitation of iron ore deposits, it is often important to know which layer (which ore or the ore-free ones) will be opened by a drill holes or mining, and this depends on whether there is a pattern in the alternation of layers in the section. Such problems can be solved using Markov chain theory.
It is defined that the alternation of natural varieties of ferruginous quartzites and schists in the productive strata of BIF deposits is probabilistic and can be described by the second-order Markov chain. This regularity allows to apply the apparatus of Markov chains for forecasting technological types and grades of ores on undisclosed areas of deposits in the planning of mining operations at mining and processing enterprises.
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Inner structure and kinematic of the Mankivska fault zone
Authors S. V. Mychak, L. V. Farfuliak, A. V. Marchenko and V. M. BelskyiSummaryNew geophysical, geochemical and petrological data of the linear geological structure of fault-dyke nature have been considered in the crystalline basement of the western part of the Pobuzhsky Mining District of the Ukrainian Shield. This structure is expressed in a magnetic field as linear anomaly with intensity greater than 1000 nTl up to 1.5 km in width, with scale 1:50 000. Stretching of the structure (north-south 69 °) is perpendicular to the general latitudinal and northwestern direction of the geological formations of the study region. The northwestern flank of this band of the maximum magnetic anomaly for more than 40 km is accompanied by an expressed linear minimum, which corresponds to the axial part of the Mankivska fault zone. This tectonic lineament has until recently had no analogues agree geophysical features, tectonophysical measurement, extent and direction in the western part of the Ukrainian Shield.
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Geoinformation Assessment of Kanivsky Prydniprov’ye Paleorelief by Structural Morphometry
More LessSummaryKaniv Dnieper area is a unique region that has evolved through the Neogene-Quaternary phase. The application of geological and geomorphological methods, remote sensing data and GIS made it possible to identify the genetic relationship between the processes of geomorphogenesis and tectogenesis within the Kaniv Dnieper region, to build a number of geological and geomorphological models. The methodology of structural-morphometric analysis is adapted to the GIS and the process of cartometric constructions is automated. An algorithm for creating order maps of valleys and basal surfaces has been developed. Basal surfaces are complex surfaces that combine local erosion bases and express the total movements of the earth’s crust over various time intervals. A study of the morphogenesis and tectogenesis of the territory of the Kaniv Dnieper region showed that the neotectonic movements within this region had a differentiated character. Five stages of tectonic evolution were determined during the Neogene-Quaternary stage of its development. Hypsometry of basic surfaces of five orders was investigated, and a detailed comparison of the morphology of single-order surfaces has been made. On the basis of the obtained data on the nature of the surfaces, absolute and relative elevations, the nature of the isobasite pattern, the geomorphological structure of each stage has been analyzed in detail. The conducted studies revealed a regular relationship between the relief and tectonics.
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Methodological principles of creation of the integrated database of geological and geomorphological monuments of Ukraine
SummaryThe theoretical and methodological principles of the identification and scientific substantiation of the selection of natural monuments are underdeveloped in Ukraine.
The aim of this paper is to introduce an integrated methodological approach: a) to substantiation of selection of geological and geomorphological sites and 2) to elaboration of integrated database of this category of natural monuments in Ukraine. The proposed database can be used both for educational and practical purposes, i.g. spatial planning of nature conservational framework in Ukraine, the eco-network, development of nature science tourism, etc.
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A first attempt at the regional implementation of a geoarchaeological site database for Ukraine: study areas of the Volyn’ Upland and the Transcarpathian Lowland
Authors O. S. Bonchkovskyi and N. P. GerasimenkoSummaryThe regional databases of geoarchaeological sites are elaborated in detail for two contrasting areas as a first step in creation of the database for Ukraine. The analysis of the literature sources and the authors’ field and analytical studies forms a base for their construction. The databases were firstly formed using Excel. To provide fast coordinate setting of the databases and to transfer the information from one software to the other, all tables in the format .exe were converted to the format CSV. The .exe format is easily imported into GIS programs with a use of geographical coordinates projection WGS-84. The database in the format GeoPackage (with the attributive table) is produced by an import of CSV file into Quantum GIS. This format is chosen for convenient export of the data into an interactive map. Its usage provides fast feedback when searches are made with a use of SQL-queries. The analysis of two regional geoarchaeological databases demonstrates that sites in Transcarpathia are studied with a better usage of geoscience methods than sites in the Volyn’ Upland. To provide a reliable correlation between palaeoenvironments in separate areas, databases using the same methodology are under construction for the whole area of Western Ukraine.
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Analysis of approaches for “Geological heritage of Ukraine” geo-portal creation
Authors V. I. Zatserkovnyi, D. P. Trofymenko, L. V. Ilyin, N. V. Trofimenko and V. HotkoSummaryThe paper presents the results of the analysis of approaches to the creation of the geoportal “Geological Heritage of Ukraine” and developed its own version of the geoportal. The structure of the site is based on the interaction of the user with interactive maps, which allows its use to users of low skill. The technology used for portal development allows you to organize a network of linked sites that are edited from one admin panel.
Geological Heritage of Ukraine is a WordPress Multisite (WPMU) network of sites and provides the ability for the user to extend the functionality of the development environment by installing plugins designed for the IntelliJ platform or by developing their own plugins.
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Geoportal GGID of NJSC “Naftogaz of Ukraine” - use of geological and geophysical information by means of geoinformation technologies
Authors S. Haliuk, V. Antonyshyn, L. Yakushyn, L. Melnyk and A. KovalSummaryGeoportal was created on the basis of the Geological and Geophysical Information Database (GGID) of National Joint Stock Company “Naftogaz of Ukraine” (NJSC “Naftogaz of Ukraine”). Geoportal provides users with the ability to view in mapping and tabular modes the information accumulated in the GGID of NJSC “Naftogaz of Ukraine” across Eastern, Western and Southern oil and gas regions of Ukraine.
Modern software products and technologies and many years of experience of Subsidiary Enterprise “Naukanaftogaz” (SE “Naukanaftogaz”) are combined in the creation of Geoportal.
This kind of Geoportal was created in Ukraine for the first time. The Open Map of Geoportal provides basic information on the exploration of oil and gas territories and the spatial distribution of geological information, objects of geological observations in order to facilitate the rational planning and location of exploration works also by taking into account the conducted research.
More detailed commercially important information becomes available after user registration: hydrocarbon deposits, resources of oil and gas prospecting structures, hydrocarbon volumes obtained, and tabular data of geological explorations of wells.
Geoportal is a convenient geoinformation tool for managing the information of GGID of NJSC “Naftogaz of Ukraine” in the subsoil use, activity of service companies and geological exploration of territories.
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Formation of cadastral data on the Nikolaevskii wolframite mineralization (Right-Bank Region of the Ukrainian Shield)
By S. P. LashkoSUMMARYThe generalization and systematization of data on the Nikolaevskii manifestation of wolframite mineralization (Right-Bank Region of the Ukrainian Shield) were made. The cadastral data regarding the Nikolaevskii wolframite mineralization are grouped in four tables. Data grouping was performed by the features of spatial, geochemical, mineralogical characteristics of wolframite mineralization and identification of wolframites. In total, 47 cadastral attributes are determined. The peculiarities of the wolframite mineralization of the Nikolaevskii area are: 1) concentration in narrowly localized zones, with a linear nature of geochemical anomalies; 2) stratiform sulfide-quartz-wolframite (possibly with niobium and tantalum minerals) type of mineralization; 3) localization in the formations of the Rodionovska suite of the Ingulo-Inguletsk series (Lower Proterozoic); 4) high-iron tantalum-bearing variation of wolframite; 5) association with pyrite, pyrrhotite, chalcopyrite; 6) lack of correlation of tungsten with petrogenic components, except for combining the interval of maximum silicification of rocks with a peak in tungsten concentration; 7) the presence of direct correlation in change the contents of W, La, Mo, Nb, Ag, Bi in the vertical section of the wolframite-bearing pack; 8) lack of transverse geochemical zonality of wolframite mineralization; 9) the presence of vertical zonality, which actually coincides with the direction of the stratums dip (is increasing with depth). A row of vertical zonality (top-down): Y → (Pb, Zn) → Sn → V → Mo → Ag → Bi → W.
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Niobium and titanium in the thorium-uranium albitites of the Novooleksiivka ore occurrence (Ukrainian shield)
Authors I. Mihalchenko, A. Andreev and V. ZagorodniySUMMARYThe article presents the results of the study of the niobium and titanium distribution in the thorium-uranium albitites of the Novooleksiivka ore occurrence of the Partisan ore field of the Central Ukrainian uranium ore district of the Ukrainian Shield. Three investigated sections of thorium-uranium albitites of the actinolite-diopside group of facies of the cut of alkaline sodium metasomatites of the ore occurrence are characterized by the presence of titanium and niobium anomalies. The estimation of the average content of these chemical elements in albitites is much higher than the geochemical background. The estimate of the correlation coefficient of titanium and niobium content in albitites is very high - the Spearman rank correlation coefficient is 0.96, which is a consequence of the concentration of these chemical elements in one (total) mineral. Electron microscopic studies show that titanite is the main concentrator of both titanium and niobium in albitites . It was concluded that in the processes of pneumatolitho-hydrothermal rock formation, additional masses of titanium and niobium were brought and deposited together in the volume of the crust now occupied by thorium-uranium albitites. Titanium and niobium are paragenetic chemical elements in the thorium-uranium albitites of the Novooleksiivka ore occurrence.
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Estimation of neotectogenesis factors of the Middle Dnieper region by structural-morphometric method
Authors L. V. Tustanovska, V. V. Shevchuk, O. M. Ivanik, К. P. Hadiatska and S. G. VolkovaSUMMARYThe research involved methods of remote sensing of the Earth, structural-morphometric analysis and geoinformation systems on the basis of which the connection and direct dependence of neotectonic movements, structural forms and modern relief were established. The main three morphostructural complexes (Kiev, Obukhiv, Kaniv-Trakhtemyriv blocks) were identified and analyzed, each with its own dominant factor. On the basis of the obtained indicators of the total amplitudes of the oscillations of the elevation of the relief, the features of the neotectonic evolution of different morphostructures, which are subject to individual rhythms, are revealed, and indicates the general complication of the morphostructural appearance of the region. It is confirmed that the northern regions of the region had an active upward movement dynamics in the Neogene epoch, and the southern ones in the Quaternary period. In general, the amplitude of fluctuations in the elevation of the elevation of the right bank of the Middle Dnieper in the Neogene-Quaternary period in the northern part was 100 m, in the southern - 135 m. Obtained data on the dynamics of the region can serve as a basis for the estimation of erosion-denudation and landslide processes within the Middle Dnieper.
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The Application Of Spatial Analysis And GIS Modeling At The Stage Of Solving The Reverse Problem In Mathematical Modeling Of Geofiltration
Authors O. Koshliakov, O. Dyniak and I. KoshliakovaSummaryIn order to effectively manage the water resources, the qualitative and quantitative indicators are estimated using the mathematical models. At the same time the application of these models on the local areas becomes more complex due to the lack of detailed information about the groundwater. For this purpose, the authors studied the functionality of GIS application in the process of mathematical modeling of geofiltration.
To provide the reliable approximation of the discrete entrance data, necessary for building the geofiltration model at the stage of solving the reverse problem in mathematical modeling of geofiltration, in particular, the coefficients of transmissibility, porosity and hydrodynamic pressures, the authors propose to apply the following modules «Darcy Flow» and «Darcy Velocity» with the modules «Particle Track» and«Porous Puff» ArcGis software. These modules are intended for elementary mathematical modeling of groundwater movemnets based on the total water balance. Their application allows reasonbly to accomplish the approximation of discrete entrance hydrogeological data and obtain the relevant and constant raster models of geological and physical fields. This approach reduces the time of solving the reverse problem, comparing to the traditional method, when the result is obtained by successive substitution method and the rialability is based upon the general hydrogeological concerns.
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Morphology of native copper crystals as component in modeling the mineral formation process
More LessSUMMARYThe results of the crystallomorphology study of native copper crystals from the ores of Ukraine (Vendian volcanic rocks of Volyn’, the oxidation zones of ultrabasic rocks of the Zhdanivka intrusion at the Berdychiv block and the Chemerpil ore occurrence of the Pobuzhzhyablock of the Ukrainian Shield) are presented.
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Factoring of radioactive properties and composition of sedimentary rocks of Runovschyna Area for the purposes of lithological and facial subdivision
Authors R. M. Bukatiuk, S. A. Vyzhva, O. V. Shabatura, V. I. Onyshchuk and I. I. OnyshchukSummaryAs a result of radiometric-material data factorization, a basis was obtained for using alpha and beta radiometry data for detailed facial and genetic subdivision of sedimentary deposits of Runovschyna Area (Poltava region, Ukraine). It is most appropriate to use the results of SAA for lithologic subdivision of geological profile. Here, the SAA and SBA together show a high positive correlation with the Al2O3, K2O content, which are the major components of the clay components, whereas with SiO2 (typical of sandy sediments), this factor has a low but negative correlation. It is also possible to use factorized radiometric parameters, with their contrasting behavior (increasing of SAA and decreasing in SBA) to evaluate: dolomitization – with help of high factor loadings of “diagnostic” components −SiO2, +MgO, +CaO; facial (−TiO2, −Na2O, −K2O, −S) and physic-chemical weathering conditions (−Mn, −P).
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Model of the new gold deposit Mananila (Tanzania)
Authors V. Mykhailov, O. Andreeva and O. OmelchukSUMMARYA new gold deposit Mananila was discovered in the northern part of the Morogoro province of the Repub-lic of Tanzania. In this region, where the Proterozoic structures of the Uzagaran mobile belt were developed, until any significant manifestations of gold mineralization wasn’t known. Mananila deposit represent by a large volume object, from 400 to 450 meters long, and from 60 to 80 meters thick. Mineralized weakened zone presented by over intensely leached and schistosed migmatites, gneisses, amphibolites, penetrated by echelon systems of quartz veins and veinlet, steeply dipping bodies of quartz breccia from 1.0 to 1.5 meters thick. Gold content is from 0.61 to 8.11 g/t, the average content is from 2.5 to 3.0 g/t. Similar structures, which parallel to the main zone, developed on this site, although they have lower thickness. The inferred resources of the deposit are estimated about 20 tons of gold. All these objects are located within a large weakened zone of northeast-ern strike with a width of 4–5 kilometers and a length of over 20 kilometers. This information serves as the basis for the identification of a new gold ore region in the northern part of the Morogoro province of Tanza-nia, within the Proterozoic mobile belt of Usagaran. The possible gold mineralization this region never has been previously discussed in geological literature.
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Specialized GIS for construction and analysis of digital models of regional line geological objects. Visualization means
Authors I. P. Dolinskiy, A. P. Lobasov and A. A. HaharinSUMMARYThe article presents the subsystem of visualization of geoinformation system for construction and processing of 2-D - 3-D geological models, first of all regional ones, in the field of oil and gas geology. The system has been investigated at the geological sites of the main oil and gas province of Ukraine -Donetsk-Dnipro Basin (DDZ), the information on which is in the database of geological and geophysical information (DBGGI) of the SE Naukanaftogaz. Appropriate software was created in a GIS environment using compilers such as Delphy and Fortran. Model visualization software tools are demonstrated on the example of a structural model of oil and gas strata at one of the sections of DDz.
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