Geological Survey of Serbia

Belgrade, Serbia

Geological Survey of Serbia

Belgrade, Serbia
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Gawlick H.-J.,University of Leoben | Djeric N.,University of Belgrade | Missoni S.,University of Leoben | Bragin N.Y.,Russian Academy of Sciences | And 3 more authors.
Geologica Carpathica | Year: 2017

Oceanic radiolarite components from the Middle Jurassic ophiolitic mélange between Trnava and Roanstvo in the Zlatibor Mountains (Dinaridic Ophiolite Belt) west of the Drina-Ivanjica unit yield Late Triassic radiolarian ages. The microfacies characteristics of the radiolarites show pure ribbon radiolarites without crinoids or thin-shelled bivalves. Beside their age and the preservation of the radiolarians this points to a deposition of the radiolarites on top of the oceanic crust of the Neo-Tethys, which started to open in the Late Anisian. South of the study area the ophiolitic mélange (Gostilje-Ljubiš-Visoka-Radoševo mélange) contains a mixture of blocks of 1) oceanic crust, 2) Middle and Upper Triassic ribbon radiolarites, and 3) open marine limestones from the continental slope. On the basis of this composition we can conclude that the Upper Triassic radiolarite clasts derive either from 1) the younger parts of the sedimentary succession above the oceanic crust near the continental slope or, more convincingly 2) the sedimentary cover of ophiolites in a higher nappe position, because Upper Triassic ribbon radiolarites are only expected in more distal oceanic areas. The ophiolitic mélange in the study area overlies different carbonate blocks of an underlying carbonate-clastic mélange (Sirogojno mélange). We date and describe three localities with different Upper Triassic radiolarite clasts in a mélange, which occurs A) on top of Upper Triassic fore-reef to reefal limestones (Dachstein reef), B) between an Upper Triassic reefal limestone block and a Lower Carnian reef limestone (Wetterstein reef), and C) in fissures of an Upper Triassic lagoonal to back-reef limestone (Dachstein lagoon). The sedimentary features point to a sedimentary and not to a tectonic emplacement of the ophiolitic mélange (= sedimentary mélange) filling the rough topography of the topmost carbonate-clastic mélange below. The block spectrum of the underlying and slightly older carbonate-clastic mélange points to a deposition of the sedimentary ophiolitic mélange east of or on top of the Drina-Ivanjica unit. © 2017 Geologica Carpathica.

Gaudenyi T.,Serbian Academy of Science and Arts | Nenadic D.,University of Belgrade | Stejic P.,Geological Survey of Serbia | Jovanovic M.,University of Novi Sad | Bogicevic K.,University of Belgrade
Quaternary International | Year: 2014

Fossils of non-marine molluscs are among the most prominent in continental Pleistocene deposits of Europe. With stabilization of taxonomies in the 19th century, numerous publications appeared with faunal lists of warm/temperate stage taxa, but few attempts were made to interpret the data. The goal of recent work, along with the re-evaluation of sites and their molluscan assemblages described in the literature, is to enable non-marine molluscan faunas to be used as guide fossils for the analysed fluvial sequences in the classification of climato-lithostratigraphic principles. The biostratigraphic scheme developed in this work is comparable with parallel investigations of other fossil records and climato-lithostratigraphy combined with geochronologic methods. In earlier literature, the Pleistocene Corbicula record was mentioned in Makiš beds ("Makiški slojevi"), in the Corbicula fluminalis beds ("slojevi sa C. fluminalis") of Szentes deposits ("Senteški slojevi"), as well as being associated with the Viviparus boeckhi Horizon as defined by Halaváts in the late 19th century.In Serbian records, the most important locations of the Pleistocene Corbicula beds are in the south-eastern part of the Pannonian Plain, which corresponds to the lowland river valleys of the (paleo) Danube, (paleo)Sava and (paleo)Tisza, and the western margin of the Dacian realm. Pleistocene Corbicula beds were formed as warm stage fluvial (and palustrine) deposits, and they are climate-lithostratigraphic units. Pleistocene Corbicula beds are younger than Upper Paludina beds (defined as the lower part of the Lower Pleistocene) in the Pannonian realm or the Romanian stage in the Dacian realm. According to the molluscan assemblage, palaeogeographical features and other paleontological contents (vertebrate fauna, ostracods), they are older than the Upper Pleistocene. According to the reference data and the composition of the molluscan assemblage, the V. boeckhi Horizon has been identified as a biostratigraphic unit. Fortunately, the V.boeckhi Horizon can be adopted to the Serbian climato-lithostratigraphy model of the fluvial warm stages and represents the lowermost part/subunit of the Pleistocene Corbicula beds of Lower Pleistocene age. © 2014 Elsevier Ltd and INQUA.

Gaudenyi T.,Serbian Academy of Science and Arts | Nenadic D.,University of Belgrade | Stejic P.,Geological Survey of Serbia | Jovanovic M.,University of Novi Sad | Bogicevic K.,University of Belgrade
Quaternary International | Year: 2015

In his studies of the Quaternary deposits in the vicinity of Belgrade and Vojvodina, V.D. Laskarev clearly identified the main Quaternary facies and lithostratigraphic units (loess series, Corbicula fluminalis beds, Holocene sands, etc.). Since the period of the publication of his research, there has been development in Quaternary stratigraphy and palaeogeography. In compliance with these changes, the following elements of his studies should be corrected:. 1) The age of the loess series in the Zemun Loess Plateau and the Belgrade Plateau corresponds to the younger part of the Middle and Late Pleistocene.2) The Pleistocene Corbicula beds represent temperate fluvial stages of the younger part of the Lower and Middle Pleistocene. The Viviparus boeckhi Horizon was defined as a subunit of the Pleistocene Corbicula beds that corresponds to the younger part of the Lower Pleistocene fluvial temperate stages. The Makiš beds should be defined as a local term for the Pleistocene Corbicula beds in the Sava valley (in the vicinity of Belgrade).3) Laskarev generally recognized the main features of the Quaternary palaeogeographic evolution; however, they cannot be applied to the whole area of the Serbian segment of the Pannonian Plain. There are still no reliable geological data for the Lower and Middle Pleistocene parts of the Quaternary geological sections such as the Zrenjanin-Titel Loess Plateau. It is evident that up to now the Pleistocene Corbicula beds have not been identified in the basement of the Titel Loess Plateau, only the aeolo-lacustrine and lacustrine-palustrine silts underlying the loess series.4) Geomorphological investigations have identified four terraces in the valley of the Danube and the Tisza in Vojvodina. In this case, the first terrace level of Laskarev should be divided into the lower Ia or t1 and upper Ib or t2 terraces. © 2014 Elsevier Ltd and INQUA.

Kovacevic J.,Geological Survey of Serbia | Todorovic M.,University of Belgrade | Cuk M.,University of Belgrade | Papic P.,University of Belgrade
Carpathian Journal of Earth and Environmental Sciences | Year: 2016

This paper research the newly-discovered U, Th-REE mineralization in Jurassic sediments in Eastern Serbia, Carpatho-Balkanides geotectonic unit-Plavna granitoid. During 2009-2013 research was conducted using a range of geological and hydrogeological methods for geochemical and petrographical analyses of rocks. It was found that uranium mineralization occurs in breccia-conglomerates of continental facies, while Th-REE mineralization is located in quartz sandstones without organic matter (marine facies). Mineralized sediment levels are distinguished according to grain sizes and the presence of organic material, which had an important role in the deposition of uranium. The major uranium minerals were uraninite (pitchblende), coffinite, and urano-organic complexes. Electron microprobe analysis (EMPA) showed that monazite crystals vary in shape and typically are lower than 50 μm in size. The ICP ME-MS81 results of 209 geochemical samples revealed a wide range of U, Th and REE concentrations. The median U concentration was found to be 6 ppm, while maximum concentrations were over 1000 ppm. The median Th concentration was 19 ppm, while maximum was over 1000 ppm. Samples showed REE contents in the range of 14.94 ppm to 10125.86 ppm. Their chondrite-normalized REE patterns are steeply right-inclined with similar slopes, with strong LREE/HREE partitioning [(La/Yb)n=1.35-218.2)], and weak to high Eu depletion (δEu=1.26-0.04). Detailed hydrochemical investigations in the area of the Jurassic sediments have shown that the groundwaters are low-mineralized, with neutral pH values, and redox values between 0.075 V and 0.437 V. A high level of uranium was found in a borehole (48.8 μg/L), while Th concentrations were low in all samples (0.00025 - 0.039 μg/L). The sum of REE concentrations in the groundwater ranged from 10.01 to 308.87 ng/L. Hydrochemical research had aim to determine the chemical composition of groundwater in the study area.

Djokanovic S.,Geological Survey of Serbia | Abolmasov B.,University of Belgrade | Jevremovic D.,University of Belgrade
Bulletin of Engineering Geology and the Environment | Year: 2016

Landfill site selection is a complex process because it requires knowledge about a large number of criteria, parameters, and regulations. The aim of this study was to describe a methodology for landfill site selection and relevant criteria from a geological engineering point of view. To determine landfill suitability in the municipality of Pančevo, Serbia, we used the geographic information system (GIS) and analytical hierarchical method (AHP). Seven criteria and eighteen subcriteria are discussed, compared, and evaluated. The final map was obtained by overlaying and is reclassified into four classes: unsuitable, poorly suitable, moderately suitable, and most suitable. The results obtained show that 62.31 % of locations are unsuitable, 13.49 % are poorly suitable, 12.08 % are moderately suitable, and 12.12 % are most suitable. The analysis revealed geological engineering criteria as the most important, followed by hydrogeological and hydrological criteria. Geomorphological criteria were the least important. © 2016 Springer-Verlag Berlin Heidelberg

Sudar M.N.,University of Belgrade | Gawlick H.-J.,University of Leoben | Lein R.,University of Vienna | Missoni S.,University of Leoben | And 2 more authors.
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen | Year: 2013

Below the Middle to lower Upper Jurassic ophiolitic mélange and their overlying ophiolite nappes of the Dinaridic Ophiolite Belt in the Zlatibor Mountain area occur olistoliths and slideblocks. These consist of Triassic carbonates and radiolarites of variable age and palaeogeographic provenance. The matrixes of these blocks are late Middle Jurassic radiolarites and clays. The different carbonate rocks were commonly interpreted to derive from the near-by Drina-Ivanjica Unit. In contrast, the radiolarites should represent the original sedimentary cover of the ophiolitic rocks of the Dinaridic Ophiolite Belt, i.e. the obducted oceanic crust of the Neotethys Ocean, originally located far to the east. The carbonate blocks in the Zlatibor (Sirogojno) mélange reach several tens to hundreds of metres in size, occasionally even kilometres. Several olistoliths and blocks contain well-preserved parts of the Middle Triassic sedimentary succession. Their stratigraphy and facies evolution allowed the reconstruction of a sedimentary succession originating from the same palaeogeographic provenance of a relatively proximal passive continental margin setting, located originally east of the Drina-Ivanjica Unit. Different red nodular limestones of the Bulog Formation were deposited on top of a drowned Middle Anisian (Pelsonian) shallow-water carbonate ramp; beside condensed sections of red nodular limestones equal-aged thick successions with megabreccias occur, indicating the creation of steep fault escarpments and rapid subsidence. In contrast to this continuous sedimentary succession, Triassic sections of the relatively autochthonous Drina-Ivanjica Unit indicate Late Pelsonian uplift of the Middle Anisian carbonate ramp. After a hiatus (Late Pelsonian to Early Illyrian), deposition of grey cherty limestones with shallow-water debris (newly described as Rid Formation) started in the Middle to Late Illyrian. The focus of this paper is on the age, the depositional environment and the facies characteristics of the Late Anisian hemipelagic successions. Based on this study it is concluded that in the Inner Dinarides domain the Middle Anisian Neotethyan break-up resulted in the generation of a horst-and-graben topography. Blocks were uplifted in a rift shoulder manner and asymmetric basins were formed. Mass flows and slide blocks were mobilized along normal faults of the evolving western passive continental margin of the Neotethys Ocean. © 2013 E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany.

Marjanovic M.,University of Belgrade | Vulovic N.,University of Belgrade | Duric U.,University of Belgrade | Bozanic B.,Geological Survey of Serbia
Landslides and Engineered Slopes. Experience, Theory and Practice | Year: 2016

Following the extreme precipitation and flooding, western and central parts of Serbia suffered massive landsliding at unprecedented rates in mid May 2014. Due to a lack of national landslide inventory and institutional consensus, regarding governmental and scientific stakeholders responsible for landslides, the May 2014 landsliding was not approached systematically until BEWARE project commenced. In the framework of the project, a practical approach for fusing landslide data was implemented for selected pilot areas: Bajina Bašta, Ljubovija and Krupanj. Approach involves field mapping and satellite image analysis across different scales. The innovative part includes techniques for collecting field data, satellite image analysis by means of visual and semi-automated classification across different scales. Landslide inventory of the target areas can be efficiently provided by proposed approach in a relatively short time but with certain expenses, while fusing across scales seems very promising for lowering these expenses for some future event-based landslide mapping campaigns. © 2016 Associazione Geotecnica Italiana, Rome, Italy.

Radivojevic M.,University of Belgrade | Toljic M.,University of Belgrade | Turki S.M.,Industrial Research Center | Bojic Z.,Geological Survey of Serbia | And 2 more authors.
Journal of Volcanology and Geothermal Research | Year: 2015

This study reports and discusses a set of new K/Ar age and new petrochemical data on basalts of the Jabal Eghei (Nuqay) area (south Libya). This area is part of a >. 1000. km long NNW-SSE Libyan volcanic field that stretches from the Mediterranean coastal near Tripoli to the Tibesti massif in Chad. Whole rock K/Ar ages, stratigraphy, volcanology and rock petrochemistry indicate that the Jabal Eghei developed during two volcanic events. The first occurred from the Middle Miocene to the Pliocene (K/Ar ages from ~. 16 to ~. 5. Ma) when large volumes of low aspect ratio lava flows of transitional basalts formed. The second event happened in Pliocene-mid-Pleistocene time (4-≤. 1. Ma) and it gave rise to basanite spatter to scoria pyroclastic cones and subordinate lava flow facies. The transitional basalts are less primitive and less enriched in incompatible trace elements than the basanites. Petrochemical characteristics reveal that the transitional basalts underwent weak to moderate olivine-dominated fractionation and that crustal assimilation had negligible effects. REE geochemical modeling shows that primary magmas of both transitional basalts and basanites formed by melting of a similar garnet-bearing, primitive mantle-like source with degree of melting of 3-5% and ≤. 1%, respectively. It is also demonstrated that the transitional basalts show systematic compositional changes in time because progressively younger rocks are petrochemically more similar to basanites. We argue that our data definitely prove that the age pattern along the entire Libyan volcanic field is much more complex than it was thought before. © 2015 Elsevier B.V.

Radenkovic M.B.,Vinča Institute of Nuclear Sciences | Joksic J.D.,Serbian Radiation Protection and Nuclear Safety Agency | Kovacevic J.,Geological Survey of Serbia
Journal of Radioanalytical and Nuclear Chemistry | Year: 2015

Natural radioactivity of drinking water with various geological origin in Balkans region has been studied. Collected water samples are analyzed for total alpha and total beta activities and specific alpha- and gamma-emitting radionuclides content using low-background proportional counting and alpha and gamma-spectrometry techniques. Obtained activity concentrations of 238U, 234U, 235U, 226Ra, 232Th, and 40K in water samples and radioactive disequilibrium between members of the natural radioactive series, based on the isotopic ratios, has been discussed. © 2014, Akadémiai Kiadó, Budapest, Hungary.

Vukadinovic I.,Geological Survey of Serbia | Radjen G.,Geological Survey of Serbia
Landslides and Engineered Slopes. Experience, Theory and Practice | Year: 2016

At the end of May 2014 Serbia experienced unnatural amounts of rainfall. Most of the damage was done to western Serbia. Numeral floods, landslides and debris flowsdestroyed a big number of facilities. There have been registrations of damages to roads, individual buildings and collective constructionsas well as fields forests and others. After surveying the fields as part of the Commission for damage evaluation that has been established by State Office for Reconstruction and Flood Relief, and a year later, as part of the "Beware" project, numeral locations are defined as vulnerable to multiple kinds of sliding processes. And there were detections of irregularities in the use of the structures themselves, their locating and the way they were built, which more or less led to the formation of sliding processes and the increase of damage to the objects. This work will show all of the detected triggers-the consequences of human activity, which, combined with the previous rainfall contributed to the formation of sliding processes. Examples of this were registries after data processing with over 200 observed locations in the municipalities of Valjevo, Krupanj, Osecina, Ljig, etc. © 2016 Associazione Geotecnica Italiana, Rome, Italy.

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