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Упит dcterms_subject_txt:Early Cretaceous

174 items

  • Paleomagnetic study of Jurassic-Early Cretaceus sediments in the Danibicum of Eastern Serbia

    Vesna Cvetkov, Emo Marton, Vesna Lesić, Dragana Tomić (2015)
    ... Geodetic Authority, Department of Geomagnetism and Aeronomi, Bul. Vojvode Mišić 39, 11000 Belgrade, Serbia Keywords: Paleomagnetism, Jurassic-Early Cretaceous, Danubicum, Eastern Serbia The Danubicum extends from South Carpathians (Romania) southward in Eastern Serbia and continues in western Bulgaria ...
    ... study area was involved in regional displacement during or after the time covered by the samples. We sampled 8 localities of Late Jurassic and Early Cretaceous limestones. The cores were oriented in situ using geological compass and sun compass if needed. Samples were subjected to standard paleomagnetic ...
    ... Paleomagnetic study of Jurassic-Early Cretaceus sediments in the Danibicum of Eastern Serbia Vesna Cvetkov, Emo Marton, Vesna Lesić, Dragana Tomić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Paleomagnetic study of Jurassic-Early Cretaceus sediments in the Danibicum ...

  • Brachiopods and echinoids from the lower Cenomanian of Koracica (Kosmaj Mountain, central Serbia)

    Ayoub-Hannaa Wagih, Radulović Barbara, Radulović Vladan, Fuersich Franz Theodor, Vasić Nebojša (2014)

  • Integrated Stratigraphy of the Middle–Upper Jurassic of the Krížna Nappe, Tatra Mountains

    Renata Jach, Nevenka Đerić, Špela Goričan, Daniela Reháková (2014)
    carbon and oxygen isotopes, radiolarians, calcareous dinoflagellates, radiolarites, Krížna Nappe, West ern Carpathians, Tethys
    ... Yao, A., 1995. Mid- dle Jurassic to Early Cretaceous radiolarian biochronology of Tethys based on Unitary Associations. In: Baumgartner, P. O., O'Dogherty, L., Goričan, Š. Urquhart, E., Pillevuit, A. & De Wever, P. (eds), Middle Jurassic to Lower Cretaceous Radiolaria of Tethys: Occurrences, ...
    ... and stomio- sphaerids for determination of the Jurassic-Cretaceous boun- dary (vertical distribution, biozonation). Scripfa, 22: 117— 122. Rey, J. & Delgado, A., 2002. Carbon and oxygen isotopes: a tool for Jurassic and early Cretaceous pelagic correlation (south- ern Spain). Geological Journal ...
    ... Wever, P. (eds), Middle Jurassic to Lower Cretaceous Radiolaria of Tethys: Occurrences, Sys- tematics, Biochronology. Memoires de Gćologie, Lausanne, 23: 889-896. Bojanowski, M. J., Barczuk, A. & Wetzel, A., 2014. Deep- burial alteration of early diagenetic carbonate concretions formed in ...

  • Tektonska evolucija istočne periferije timočke eruptivne oblasti

    Stefan Zujić (2024)
    U radu su predstavljeni rezultati proučavanja tektonskih i litostratigrafskih karakteristika istočnog oboda Timočke eruptivne zone. Zaključci o geološkim odnosima u okviru Timočke eruptivne oblasti i susednih geotektonskih jedinica izvedeni su na osnovu podataka prikuljenih tokom terenskih istraživanja i podataka dobijenih iz publikovanih radova. Rezultati rada ukazuju da je teren koji je bio tema ovog istraživanja, u strukturno-tektonskom smislu oblikovan tokom glavnih geodinamičkih događaja u okviru Karpato-balkanskog orogenog luka. Analizom strukturnog sklopa su utvrđeni glavni deformacioni događaji koji su predsavljeni ...
    tektonska evolucija, timočka eruptivna oblast

  • Утицај реактивираних раседа на развој крашког процеса: примери из Карпато-балканида источне Србије

    Ана Младеновић (2022)
    Carpatho-Balkanides represent part of the complex Dinaric-Carpatho-Balkan orogenic system, that geomorphologically dominates the central part of the Balkan peninsula. The existence of this orogenic system is a result of closure of the Neotethys ocean and subsequent convergence of the Adriatic microplate and the Eurasian continent, that has been still active in the recent times. Such geodynamic characteristics conditioned complex tectonic structures, multiply reactivated during Late Cretaceous and Cenozoic. The main aim of this research is to determine impact of ...
    Карпато-балкански ороген, реактивирани расед, спелеолошки објекат, крашки процес

  • Uticaj reaktiviranih raseda na razvoj kraškog procesa: primeri iz Karpato-balkanida istočne Srbije

    Ana Mladenović (2022)
    Carpatho-Balkanides represent part of the complex Dinaric - Carpatho - Balkan orogenic system, that geomorphologically dominates the central part of the Balkan peninsula. The existence of this orogenic system is a result of closure of the Neotethys ocean and subsequent convergence of the Adriatic microplate and the Eurasian continent, that has been still active in the recent times. Such geodynamic characteristics conditioned complex tectonic structures, multiply reactivated during Late Cretaceous and Cenozoic. The main aim of this research is ...
    Karpato-balkanski orogen, reaktivirani rased, speleološki objekat, kraški proces

  • Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)

    Alexander B. Klimchouk, Saša Milanović, Cristian Bittencourt (2021)
    Carbonate rocks of Cretaceous age are wide spread in the Peruvian Andes. The studied area in the eastern part of the Cordillera Occidental, near a large igneous intrusion and a skarn deposit, exemplifies polygenetic and multi-phase karst development. Hypogene karstification is related to a hydrothermal activity associated with a magmatic event at ca. 11-9.7 Ma responsible for the emplacement of the nearby intrusion and related alteration of the carbonate rocks. It has resulted in deep-rooted, laterally isolated stair-case-rising shaft ...

  • A new evidence for pachyostotic snake from Turonian of Bosnia-Herzegovina

    Dragana Đurić, Dragoslav Radosavljević, Dragana Petrović, Miloš Radonjić, Petar Vojnović (2017)
    Фосилни налази морских змија из кредних седимената Босне и Херцеговине познати су од пре скоро сто година. У овом раду је приказан нови налаз пахиостотичне змије пронађене у локалном каменолому Дубовац, око три километра северозападно од Билеће. Примерак чини низ од 29 кичмених пршљенова од којих су седам изоловани из седимента. Међу изолованим пршљеновима два најочуванија су својим скоро четвртастим обликом слична пршљеновима Simoliophis rochebrunei али су неурални луци више отечени. Пршљенови и ребра показују висок степен пахиостозе као ...
    турон, Билећа, змије са ногама, пахиостоза, Pachyophis

  • How active is recent tectonics in the central Balkans: Evidence from the Serbian Carpatho-Balkanides

    Ana Mladenović (2022)
    Since the Late Cretaceous, after closure of the Neotethys ocean, tectonic processes in the central Balkan Peninsula were mainly controlled by the mutual interaction of the Adriatic and the Eurasian plates, and tectonic units in-between. Most of the tectonic structures that have been active during Cenozoic times were inherited from previous tectonic stages under different tectonic regimes. Tectonic activity within the Carpatho-Balkan orogen in eastern Serbia since Miocene is conditioned by the existence of the rigid Moesian promontory east ...

  • Stratigraphic implications of the Mio-Pliocene geodynamics in the area of Mt. Avala: new evidence from Torlak Hill and Beli Potok (Belgrade, Serbia)

    Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević, Miloš Radonjić (2019)
    Mt. Avala is located on the southern margin of the Pannonian basin (SPB), a border zone between the uplifted morphostructures of the Dinarides and Carpathian-Balkanides. Similar to the Pannonian basin, tectonostratigraphic evolution of the Mt. Avala area during the last 23 Ma has is characterized by syn- and post-rifting processes as well as tectonic inversion. Here, we present the results of field investigations of the Miocene‒Pliocene dynamics that led to different spatial positions of the same stratigraphic units (e.g. ...
    мио-плиоценска геодинамика, јужни Панонски басен, Авалски и Торлак хорст, Белопоточки трог, Србија
    ... rassic–Cretaceous sediments (sometimes broken up by Upper Cretaceous and Tertiary volcanites), in the eastern belt of ultra- mafites (serpentinite, peridotite and dunites), and on the edge of Miocene deposits. All through the Neogene, the Avala horst shows different activity. In the early Miocene ...
    ... GANIĆ et al., 2011).The oldest rocks belong to Juras- sic carbonates, ophiolitic mélange, serpentinized peridotites, Lower and Upper Cretaceous carbonates and Upper Cretaceous turbiditic and flysch deposits (TOLJIĆ, 2016; TOLJIĆ et al., 2018). During the Oligocene, magmatic bodies forming dykes and sills ...
    ... the basement rocks in the area. Much later, dif- ferent Miocene and Quaternary sedimentary units unconfor- mably overlie Jurassic serpentinites or Cretaceous sediments (Fig. 2). Older Miocene units (?Lower Miocene continental-lacustrine formation, predominantly) have a relatively narrow distribution ...

  • Simple 2D gravity–density inversion for the modeling of the basin basement: example from the Banat area, Serbia

    Ivana Vasiljević, Snežana Ignjatović, Dragana Đurić (2019)
    We have developed a technique to calculate lateral density distribution of the sedimentary basin basement by combining linear gravity–density inversion and 2D forward modeling. The procedure requires gravity anomaly data, depth-to-basement data and density data for the sediments (density–depth distribution). Gravity efect of density variations in the basement was extracted from the total gravity anomaly by removing the joint efect of the sediments with vertical density variations and homogeneous basement of average density contrast (calculated by 2D modeling). Gravity ...
    funkcije raspodele gustine, lateralna raspodela gustine, karta gustine podloge

  • Age of the Jurassic hemipelagic sediments from the Ljubiš area (Zlatibor Mt., SW Serbia)

    Nikita Bragin, Nevenka Đerić (2020)
    Radiolaria, Dinarides, Jurassic, stratigraphy, Serbia
    ... Radiolarian catalogue and systema- tics of Middle Jurassic to Early Cretaceous Tethyan genera and species.– In: BAUMGARTNER, P.O., O’DOGHERTY, L., GORIČAN, Š., URQUHART, E., PILLEVUIT, A. & DE WEVER, P. (eds.): Middle Jurassic to Lower Cretaceous radiolaria of Tethys: Occurrences, Systematics, Biochronology ...
    ... KITO, N., MARCUCCI, M., MATSUOKA, A., MURCHEY, B., O’DOGHERTY, L., SAVARY, J., VISHNEVSKAYA, V., WIDZ, D. & YAO, A. (1995b): Middle Jurassic to Early Cretaceous radiolarian biochronology of Tethys based on Unitary Associations.– In: BAUMGARTNER, Figure 6. The stratigraphic ranges of selected radiolarian ...
    ... CHIARI et al., 2011; FERRIÈRE et al., 2015; GAWLICK et al., 2017; BRAGIN et al., 2019b). It is very rarely possible to obtain Early Jurassic ages, and radiolarites of Early Jurassic age were only discovered in two sections, at Angelokastron and Vothiki (Argolis), (CHIARI et al., 2013). Numerous ...

  • Hydrochemical indicators of groundwater flow in the area of “Čukaru Peki” Cu-Au underground mine in eastern Serbia

    Nebojša Atanacković, Vladimir Živanović, Jana Štrbački, Veselin Dragišić, Ivana Cvejić (2022)
    The physical and chemical properties of groundwater, together with the groundwater levels regime and rock hydraulic properties, are often used to understand and conceptualize the hydrogeological system. Prediction of the influence of mining works on groundwater, and vice versa, is a challenge due to significantly altered groundwater flow patterns in the raw materials exploitation areas in relation to natural conditions. Therefore, multiple parameters are assessed and monitored before and during exploitation to properly characterize and quantify the system for ...
    mine water, hydrogeology, multivariant statistics, groundwater inflow, water quality

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... importance. The ore body was created during the continental phase of devel- opment between the upper Triassic and older upper Cretaceous period, most likely during the lower Cretaceous. Due to the typical �lling of paleo relief cavities, the ore body thickness varies from several centimetres up to 37m ...
    ... blind valleys). These limestones are occurring along the rim of the deposit. The overlying beds are made of the upper Cretaceous and Neogene deposits. The upper Cretaceous sedi- ments were discovered furthest to the southeast of the deposit, spreading to the east outside of the deposit. They ...

  • Fluid inclusion systematics in the Okoška gora polymetallic deposit

    Aleš Šoster, Miloš Velojić, Barbara Potočnik Krajnc, Matej Dolenec (2021)
    ... . The metasedimentary sequence consists of micaschist, gnciss, marble and quartzite, which underwent amphibolite grade metamorphism during the Cretaceous. The Pohorje series was emplaced by several episodes of magmatic activity, which can be roughly divided into pre- and post-metamorphic events. ...
    ... Permian). Their interpretation was based on petro observations of cuhedral pyrite and galena, which they attributed to blastic recrystal during the Cretaceous metamorphic event. This paper presents the first fluid inclusi 1 microthermometric data in an attemptto decipherthe genetic conditions ofthe Око ...
    ... case study from the Cambro-Ordovician sect Sahara) using U-Pb-LA-ICP-MSdetrital zircon Linnemann, U., Gerdes, A., Hofmann, M. & Marko, L. 2 to Early Cambrian crustal growth and orogenic zonih, Авсап Стаоп—Сопзтани from U-Pb zircon ages ani Germany). - Precambrian Research, 224, 236–278. Mioč, ...

  • Connections between the Levant and the Balkans in the late Middle Pleistocene: Archaeological findings from Velika and Mala Balanica Caves (Serbia)

    Dušan Mihailović, Steven L. Kuhn, Katarina Bogićević, Vesna Dimitrijević, Ana B. Marín-Arroyo, Jelena Marković, Norbert Mercier, Bojana Mihailović, Mike W. Morley, Predrag Radović, William J. Rink, Senka Plavšić, Mirjana Roksandić (2022)
    Major changes in the technological, economic, and social behavior of Middle Pleistocene hominins occurred at the onset of the Middle Paleolithic, 400e200 ka. However, until recently it was not possible to establish when, where, and how certain forms of Middle Paleolithic behavior appeared and spread into Southeastern Europe, mainly owing to gaps in the Paleolithic record. Here we report new results of dating, material culture, and the archaeological context of finds from the Balanica Cave Complex in Sicevo (Serbia). ...
    Neandertalci, starija Kina tehnologija, jabrudijen, populaciona kretanja, kulturni prenos

  • Determining seismic hazard in slowly deforming region: Can we gather enough information from karst caves?

    Ana Mladenović, Jelena Ćalić (2021)
    Methods to determine seismic hazard in any region vary depending on the regional seismicity, but can be roughly grouped into two main groups: one based on probabilistic methods that use data about known seismicity in the region, and another, which is based on data related to the faulting processes and determination of seismically active faults. Both groups of methods are relatively good for seismically active regions. However, in regions of low seismic activity and slow deformations, there is neither ...

  • Hypogene speleogenesis related to porphyry magmatic intrusions and its influence on subsequent karst evolution in the Peruvian high Andes

    Alexander Klimchouk, David Evans, Sasa Milanovic, Cristian Bittencourt, Mauro Sanchez, F. Carlos Aguirre (2022)
    Earth-Surface Processes

  • Numerical simulation of the Late Jurassic closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2021)
    ... zone and presumably subduction related Timok MagmaticComplex, both Late Cretaceous in age as well as Jurassic ophiolites obducted onto the Adriaticmargin. In our simulations we initiate an intraoceanic subduction in the Early/Middle Jurassic,which eventually transitions into an oceanic closure and ...

  • 2D Numerical Simulation of Intraoceanic Subduction during the Upper Jurassic Closure of the Vardar Tethys

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2020)
    ... zone and presumably subduction related Timok MagmaticComplex, both Late Cretaceous in age as well as Jurassic ophiolites obducted onto the Adriaticmargin. In our simulations we initiate an intraoceanic subduction in the Early/Middle Jurassic,which eventually transitions into an oceanic closure and ...