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Упит dcterms_subject_txt:Alluvial deposits

273 items

  • New LA-ICP-MS U/Pb zircon data on various granitoids from the European side of the Tethyan Mesozoic suture

    Šarić Kristina, Erić Suzana, Peytcheva Irena, Radivojević Maša, von Quadt Albrecht, Cvetković Vladica (2012)

  • Geodynamics of basins above subducted slabs: An integrated modelling study of tectonics, sedimentation, and magmatism in the Timok Magmatic Complex

    Uros Stojadinovic, Marinko Toljic, Branislav Trivic, Radoje Pantovic, Danica Sreckovic-Batocanin, Nemanja Krstekanic, Bojan Kostic, Milos Velojic, Jelena Stefanovic, Nikola Randjelovic, Maja Males (2024)
    Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling

  • Anisotropic grossular–andradite garnets: Evidence of two stage skarn evolution from Rudnik, Central Serbia

    Bojan Kostić, Danica Srećković-Batoćanin, Petyo Filipov, Pavle Tančić, Kristijan Sokol (2021)
    This paper presents LA-ICP-MS data for garnets from the Rudnik skarn deposit (Serbia), which range from Grs45–58Adr40–52Alm2–3 in the core and Adr70–97Grs2–29Sps1 in the rim displaying anisotropy and zoning. In spite of wide compositional variations the garnets near the end-member of andradite (Adr > 90) are generally isotropic. Fe-rich rims exhibit LREE depletion and flat HREE pattern with weak negative Eu anomaly, including higher As and W contents. On the other side, the Fe-poorer core shows flat REE pattern ...
    grandite, garnets, skarn, Rudnik
    ... garnets, skarn, Rudnik. Introduction Study of the composition of common skarn minerals and the possibility to be helpful in prospecting of skarn deposits has a brief history. One of the earliest attempts was made by Nakano et al. (1991) who studied the composition of pyro- xenes. Afterwards, several ...
    ... that may take place in the structure, garnet beco- mes a suitable geochemical tracer. Such application is suppor- ted by its common presence in skarn deposits and its high physical and chemical stability during weathering. Additio- nally, this mineral is easy recognizable under the microscope, and quite ...
    ... andradite-rich garnets contain more Cu than grossular-rich opened a question: whether garnet chemistry could be used as a guide in prospecting Cu-skarn deposits (Somarin 2004)? Use of the rare earth elements (REE) in studies of the nature and effects of hydrothermal alterations and hydrothermal sys- tems ...

  • Implementataion of the modern technologies in order to control the drilling an blasting works

    Miljan Gomilanović, Stefan Milanović, Nikola Stanić, Aleksandar Doderović, Nikola Simić (2018)
    U ovom radu prikazanе su mogućnosti primene savremenih tehnologija u oblasti bušenja i miniranja pri površinskoj eksploataciji ležišta mineralnih sirovina, problemi koji se javljaju prilikom izvođenja radova, kao i moguća rešenja i prednosti primene ovih tehnologija.
    bušenje, miniranje, dron

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... when planning, ore mining is which methods are adequate and what is the optimal mining; technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered syn- onymous the inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation ...
    ... 1413 in enormous amounts of money. This industry hires a large number of miners, who require favourable working; conditions. Additionally, ore deposits are largely found at large depths, causing; certain mine management problems that need to be examined. On the one hand, this includes excavation ...
    ... select- ing the appropriate mining; technology. Given that decision making in the case of complicated geological conditions associated with ore deposits requires "muhltidi- mensional" opinions, where experts are required to use logic, knowledge, intuition and experience, the proposed methodology ...

  • Sepiolite – a by-product of exploitation as a potential raw material in Serbian industry

    Radmila Gaćina, Katarina Urošević, Jelena Zakonović (2019)
    This paper gives a brief overview of the sepiolite deposits, the basic properties, and the possibilities of using this mineral. Particular attention is paid to sepiolites from domestic production, especially the use of sepiolites suitable for the development of small businesses and technologies, with a focus on environmental protection. Aim of this paper is to point out importance of this mineral and to draw attention to the use of domestic raw materials. With appropriate mechanical and chemical pretreatments, sepiolite is ...
    sepiolite, by-product, small-scale mine, marginal costs,

  • Uticaj ekstremnih procesa na rizike površinske eksploatacije

    Natalija Pavlović, Tomislav Šubaranović, Dragan Ignjatović (2022)
    Nepredvidivi ekološki negativni slučajni procesi mogu uticati na geo-tehnički sistem pri površinskoj eksploataciji ležišta mineralnih sirovina, što u velikoj meri uvećava rizike i ugrožava realizaciju proizvodnje. Kvantitativna analiza sa proračunom verovatnoća pojava ovakvih ekstremnih događaja i procenom odgovarajućih ekonomskih posledica, posebno u uslovima globalnih klimatskih promena, omogućava definisanje rizika i optimizaciju parametara sistema površinske eksploatacije.

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • Correlation of uniaxial compressive strength with the dynamic elastic modulus, p –wave velocity and s –wave velocity of different rock types

    Jelena Majstorović, Miloš Gligorić, Suzana Lutovac, Milanka Negovanović, Luka Crnogorac (2019)
    Knowing mechanical properties of rocks incorporated with ultrasonic waves velocities investigations provide a secure basis for mine modelling. Uniaxial compressive strength, dynamic elastic modulus and ultrasonic waves velocities are just some of the rock properties that indicate on presence of discontinuities, stratification and fissures of rocks. Determining the relationship of these rock properties testing the rock samples that are corresponding to different rock types extracted from different mineral deposits represents the core of this study. In this paper, we ...
    линеарна регресија, метода најмањих квадрата, динамички модул еластиности, брзина уздужних таласа

  • Contents of potentially toxic elements in residual soils of a long-term mining region: a key study from Central and Western Serbia

    Milun Jovanović, Dejan Prelević, Vidojko Jović, Danica Srećković-Batoćanin, Snežana Branković (2022)
    Regional geochemical research of residual soil was conducted in an area of about 20,000 km2 in the region of Central and Western Serbia, where six metallogenetic zones and mining since ancient times have been documented. The geochemical background variation in the residual soil was established upon the contents, spatial pattern and natural background of potentially toxic elements (PTEs). The limits of natural background values (mg·kg-1) were determined by the integral method. Our data show that anomalous concentrations of As, ...
    prostorna distribucija, toksični elementi, rezidualno tlo, procena rizika

  • Estimating hydraulic parameters for the complex hydrodynamic models

    Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin (2018)
    Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions. This method of calibration and estimation of hydraulic parameters requires an extensive knowledge and experience of experts, but whether the resulting solution includes an optimal set of parameters still remains an open question. An optimization method founded upon the Gauss-Marquardt-Levenberg algorithm, along with PEST software based on that algorithm, introduces automation of model calibration with regularization, which substantially ...
    kalibracija, optimizacija, PEST, koeficijent filtracije

  • Effect of natural gas composition on methane number: A case of gas reservoirs in Serbia

    Marija Živković, Milica Ivić, Dejan Ivezić, Aleksandar Madžarević (2017)
    Natural gas is considered as the most environmentally acceptable fossil fuel, thus it is an alternative to petroleum derivate, dominantly used in internal combustion engines. Physical properties of a fuel as well as behavior during combustion process are affected by its composition. This article presents analysis of effect of natural gas composition on methane number (MN), conducted for natural gas deposits in Serbia. For empirically determination of MN: California air resources board (CARB) method and Linear and Anstalt für ...
    Састав, метански број, природни гас

  • Development of Integrated Fuzzy Model for Mine Management Optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    Technoeconomic, environmental and safety criteria generally affect the management of metallic and non-metallic mining operations. The first basic question that needs to be addressed when planning ore mining is which methods are adequate and what is the optimal mining technology? Due to the complex geologic framework of ore deposits, geological exploration has rendered synonymous the inherent uncertainties, vagueness, and inaccuracies. As a result, subjective evaluation by engineers and expert experience have become increasingly important. Given that the natural language ...
    mining technology, expert evaluation, triangular fuzzy numbers, multicriteria decision making

  • Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)

    Miloš Radonjić (2020)
    This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...
    Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides
    ... of clastic material from continen- tal environments to the deep-marine realms (MULDER & SY- VITSKI, 1995). The characteristics of hyperpycnites (deposits of hyperpycnal flows) are distinctive both in their sedimentological features (MULDER et al., 2003) and palaeontological content (ZAVALA et al ...
    ... m dimensions were discovered (MASLAREVIĆ & KRSTIĆ, 1987b). The Kučaj-Zvonce flysch is unconformably overlain by Upper Carboniferous continental deposits, Permian red sandstones and Mesozoic-Palaeogene sedi- mentary cover (KRSTIĆ & MASLAREVIĆ, 1990). 3. THE KOSTADINOVICA SECTION The exposed succession ...
    ... the Prote- rozoic-Cambrian crystalline metamorphics of the Homoljske Mts. in the northern part of the unit (DIMITRIJEVIĆ, 1997). The overlying deposits represent a siliciclastic cycle of sedimentation with a trend of deepening of the facies beginning with Early Or- dovician coastal/shallow marine ...

  • Dosadašnja saznanja o bijelim boksitima na prostoru Crne Gore

    Mia Jovanović, Slobodan Radusinović, Vladimir Simić (2023)
    bijeli boksit, geološka istraživanja, geologija, geohemija

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... industry is very difficult to achieve production targets and profit without investing effort in detailed excavation planning. It is especially true for deposits with complex geological structure and production technology, as is the case for many coal mines in Serbia. The majority of coal production is ...
    ... Modern mining is characterized by continuous worsening of production conditions. This is particularly evident when considering the fact that the deposits on which exploitation is carried out are often, small in size, with poor quality and with complex structure and geometry, often in locations ...
    ... world leading software for integrated geology and mine planning solutions. It is comprehensive tool specialized for coal and other stratified deposits, such as phosphate, zinc, bauxite, iron ore, and platinum. Minex covers almost every part of geological modeling and mine planning process. ...

  • Against the tide: southeast to northwest shelf-edge progradation in the southeastern margin of Lake Pannon, Banat (Serbia and Romania)

    Dejan Radivojević, Miloš Radonjić, Lajos Tamás Katona, Imre Magyar (2022)
    In the late Neogene, the Pannonian Basin in Central Europe was filled with sediments when rivers from the Alps and Carpathians shed their sediment load into Lake Pannon. The most powerful source-to-sink system was that of the paleo-Danube, transporting sediments from the NW as far as the southeastern part of the lake. In the southeastern margin of the basin, however, local sedimentary systems worked in the opposite direction, against the “tide” of the prevailing N to S sediment transport. ...
    General Earth and Planetary Sciences

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... Kostolac, or similar deposits for other TPP, is extremely convenient because UCG method mainly utilizes Petrović, D. T., et al.: Valorization of Non-Balanced Coal Reserves in Serbia for ... 4080 THERMAL SCIENCE: Year 2019, Vol. 23, No. 6B, pp. 4067-4081 non-balanced deposits and excavated residues ...
    ... about 72-96%, taking into account the useful volume of coal. In addition, it should be kept in mind that the UCG method mainly utilizes non-balanced deposits and excavated residues of balanced reserves. * Corresponding author, e-mail: stamenic(a)msn.com Petrović, D. T., et al.: Valorization of N ...
    ... to 1 MJ of energy), — there is no significant degradation of the terrain, since all the non-combustible substances (slag or ash) remain in the deposits bencath the surface of the earth, — there is no substantial pollution of the environment and the working environment, as there are no solid residues ...

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... Mining and Geology, Serbia. NIKITA YU. BRAGIN, LIUBOV G. BRAGINA, NEVENKA DJERIĆ & !NATAŠA GERZINA SPAJIĆ Introduction The Triassic hemipelagic deposits of moderate thickness (up to several hundred meters), which are represented by platy cherty limestone intercalated with marl and clay, in parts ...
    ... are in tectonic contacts with the surrounding rocks. Therefore it was difficult to reconstruct primary strati- graphical relationships ofthese deposits without bios- tratigraphic control. Biostratigraphy of the Grivska Formation can be based only on microfauna; any macrofossils are unknown here ...
    ... ofthe former passive margin were suc- cessively fragmented and incorporated into the nappe stack in front of the westward obducting ophiolites. Deposits ofthe continental slope (Meliata facies, Grivska Formation) became a part of the nappe stackin the first stage of obduction, while the outer ...

  • New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (Western Serbia)

    Nevenka Đerić, Nataša Gerzina (2014)
    Gornja kreda, radiolarije, Jadar blok, zapadni pojas Vardarske zone, zapadna Srbija
    ... ing (GERZINA & CSONTOS, 2003; CSONTOS et al., 2004). The Late Jurassic to Early Cretaceous transgressive phase, characterized predominantly by alluvial to neritic sed- imentation, started after the obduction and the subsequent erosion in the Dinaridic-Hellenic belt (PAMIĆ et al., 1998; PAMIĆ ...
    ... radiolarians. The Santonian age of the analyzed sediments is based on radiolarians. Similar Santonian radiolarian assemblages are known from deposits of the Mt. Ak-Kaya, Crimean Mountains (KORCHAGIN et al., 2012) and from Struganik village in Western Serbia (DJERIĆ et al., 2000; BRAGINA et ...
    ... (Greece).– Eclogae Geol. Helv., 99/1, 1—20. BRAGINA, L.G. & BRAGIN, N.Y. (1995): Radiolarians and stratigraphy of the Campanian Maastrichtian deposits in southwestern Cyprus.- Stratigraphy and Geological Correlation, 3/2, 53—1. BRAGINA, L.G. & BRAGIN, N.Y. (1996): Stratigraphy and radiolarians ...