Претрага

Упит dcterms_subject_txt:Lower Cretaceous

174 items

  • To what extent reactivated faults are (not) responsible for karst process: example from Serbian Carpatho-Balkanides?

    Ana Mladenović, Jelena Ćalić (2023)
    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 times. The main aim of this work ...
    Carpatho-Balkanides, karst caves, reactivated faults, transpressional tectonics

  • Палеомагнетски резултати из Тимочког магматског комплекса, Источна Србија

    Весна Лесић, Емо Мартон, Драган Лукић, Весна Цветков (2018)
    ... Geticum  and  is  of  Upper  Cretaceous  age  (radiometric  data,  Banješević,  2010  and  references  theirin).  It developed on a continental crust composed of different  types of Proterozoic  to  Lower Cretaceous rocks. The sedimentation continued through Upper Cretaceous from Lower Turronian  and ended  ...
    ...  the Late Cretaceous. This CW rotation is clearly of regional significance since  similar CW rotations were also observed more to the west  (Lesić et al., 2015) where the rotations are  most likely of post‐20 Ma.  751  ЛИТЕРАТУРТА / REFERENCES    Banješević, M., 2010. Upper Cretaceous magmatic s ...
    ... ites of the Timok Magmatic Complex. Geološki ana‐ li Balkanskog poluostrva, 71, 13–22.  Berza, T., Constantinescu, E., Vlad,  S.N., 1998. Upper Cretaceous magmatic  series and associated mi‐ neralization in the Carpatho‐Balkan Orogen. Resource Geology, 48, 291–306.  Fisher, R.A., 1953. Dispersion  ...

  • Investigating distant effects of the Moesian promontory: Brittle tectonics along the western boundary of the Getic unit (East Serbia)

    Ana Mladenović, Milorad D. Antić, Branislav Trivić, Vladica Cvetković (2019)
    In this study, we report evidence for brittle deformation in a part of the Carpatho–Balkan orogen, which is explained in terms of effects of the rigid Moesian promontory of the European plate on fault kinematics in East Serbia. We focus on the westernmost part of the Getic Unit of the East Serbian Carpatho–Balkanides, i.e. the Gornjak–Ravanica Unit, located between two main thrusts that were repeatedly activated from Early Cretaceous to recent times. We combine a new data set on ...
    Getikum, Mezijska jedinica, Karpato-balkanski orogen, krte deformacije, Gornjačko-ravanička jedinica

  • The final closure of the Vardar Ocean: paleomagnetic, AMS and structural results

    Emö Márton, Marinko Toljić, Vesna Lesić, Vesna Cvetkov (2020)
    ... withstructural observations will be presented from Upper Cretaceous sediments and Oligocene–Lower Miocene igneous rocks representing the areas bordering the Sava zone from the westernand eastern sides, respectively and from the upper Cretaceous flysch deposited in the Sava zone. In the areas W and E of ...
    ... ns,imprinted during magmatic activity. Compared to the areas flanking it, the sediments of the Savazone were intensively folded during the Upper Cretaceous and Paleogene and the paleomagneticsignals, which exhibit smeared distribution close to the present N, are of post-folding age. TheAMS foliation ...

  • Middle Aptian Orbitolinid limestones in Belgrade (Serbia): microfacies and depositional environment

    Bojana Đorđević, Hans-Jürgen Gawlick, Nevenka Djerić, Felix Schlagintweit, Miloš Radonjić (2023)
    Orbitolinidae, Microfacies, Early Cretaceous, Dinarides

  • Paleomagnetic evidence for post-collisional Miocene clockwise rotation in the Serbian segment of the Vardar Zone and the Danubicum

    Vesna Lesić, Emő Márton, Vesna Cvetkov, Dragana Tomić (2015)

  • Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia

    Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović (2018)
    ... post-obduction Late Cretaceous sediments and Cenozoic igneous rocks. The area covered by this study belongs to the West Vardar and Jadar-Kopaonik units semsw Schmid et al. (2008). In this 160 km long strip we sampled on the north in the wider Rudnik Mts. area seven localities of Late Cretaceous micritic limestones ...
    ... results show that the remanent magnetization both in the igneous rocks and sediments resides in magnetite. The locality mean directions for Late Cretaceous sediments are well defined and the remanenceis of post tilting: age. For both the Oligocene-Earliest Miocene and Oligocene igneous rocks (Rudnik ...
    ... defined. The conclusions which can be drawn out from ourresults are that the overall-mean directions and their statistical errors for the Late Cretaceous sedimentlocalities and Oligocene-Earliest Mioceneigneous sites from the Rudnik Mts. area and the Oligocene igneouslocalities/sites from the Kopaonik ...

  • Alpine tectonic evolution of the Northern Serbo-Macedonian subunit: inferences from kinematic and petrological investigations

    Bojan Kostić, Uroš Stojadinović, Nemanja Krstekanić, Marija Ružić, Aleksa Luković (2021)
    ... lithosphere beneath the upper European plate (i.e., the Sava subduction system). Theretreating and steepening of subducting lithosphere during the Late Cretaceous triggered syn-subductional extension in the upper plate of the Sava subduction system. The Late Cretaceousextension exhumed and structurally juxtaposed ...
    ... Mts in the north, across the Jastrebac Mts and further towards the south inthe Central Serbo-Macedonian sub-unit of south-eastern Serbia. The Late Cretaceous extensionexhumed the Serbo-Macedonian metamorphic core, concurrently creating subsidence in a forearcbasin along the frontal part of the European ...
    ... The ENE-WSW oriented extension, which was triggered by the retreat of Carpathian slab, exhumed the core of themountains and exposed the Late Cretaceous Serbo-Macedonian\Supragetic extensional contact.South from the Vršac Mts such exhumation was hampered by the presence of rigid Moesianindenter. Tectonic ...

  • 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
    ... al. 2005). The Cretaceous sediments in the vicinity of Rudnik Mt. (Fig 1.) were described as clastic “paraflysch” (Anđelković 1973; Dimitrijević & Dimitrijević 2009) as these sediments resemble typical flysch but lack characteristic internal orga- nization. The Lower Cretaceous includes shales ...
    ... Dimitrijević 1987, 2009; Sladić-Trifunović et al. 1989). Going upwards in the strati- graphic scheme, Lower Cretaceous sediments are replaced with shallow water reef limestones and clastics. The Upper Cretaceous succession starts with Albian–Cenomanian con- glomerates, microconglomerates, sandstones, carbonates ...
    ... Academy of Sciences and Arts Department of Natural & Mathematical Sciences, Belgrade, 1–304. Dimitrijević M.N. & Dimitrijević M.D. 2009: The Lower Cretaceous paraflysch of the Vardar zone: composition and fabric. Annales Geologiques de la Peninsule Balkanique 70, 9–21. Einaudi M.T., Meinert L.D ...

  • U-Pb zircon geochronology of the Paleogene – Neogene volcanism in the NW Anatolia: Its implications for the Late Mesozoic-Cenozoic geodynamic evolution of the Aegean

    E. Yalçın Ersoy, Cüneyt Akal, Ş. Can Genç, Osman Candan, Martin R. Palmer, Dejan Prelević, İbrahim Uysal, Regina Mertz-Kraus (2017)
    The northern Aegean region was shaped by subduction, obduction, collision, and post-collisional extension processes. Two areas in this region, the Rhodope-Thrace-Biga Peninsula to the west and Armutlu-Almacık-Nallıhan (the Central Sakarya) to the east, are characterized by extensive Eocene to Miocene post-collisional magmatic associations. We suggest that comparison of the Cenozoic magmatic events of these two regions may provide insights into the Late Mesozoic to Cenozoic tectonic evolution of the Aegean. With this aim, we present an improved Cenozoic stratigraphy ...

  • Distribution of Uranium and Rare Elements in Radioactive Phosphate-Bearing Anomalies in Southeast Mongolia

    Boris Vakanjac, Neil Rutherford, Vesna Ristić Vakanjac, Tanita Đumić, Suzana Đorđević Milošević (2020)
    Soviet and Mongolian geologists initiated geological exploration of Mongolia for minerals after World War II (1945). These activities lasted until the breakup of the USSR in 1991. As part of this exploration systematic uranium and rare element exploration was undertaken across Mongolia. New exploration resumed in Mongolia at the beginning of the 21st century for a range of ore and mineral deposit styles including uranium, coal, base and precious metals and Fe-ore. This was generally undertaken by Western-based companies. This ...
    uran, radioaktivnost, kreda, retki elementi, fosfati, anomalije, Dornogobi

  • Trace elements and garnet formation in a distal skarn zone: a case study of the Rudnik deposit, Central Serbia

    Bojan Kostić, Pavle Tančić, Natalija Batoćanin (2024)
    geohemija granata, retke zemlje, fluidne inkluzije, skarnovsko ležište Rudnik

  • High-resolution sequence stratigraphy of carbonates - theory and examples

    Jelena Stefanović, Dejan Radivojević (2020)
    Циљ рада је да кроз теоријски аспект и примере примене представи секвенциону стратиграфију високе резолуције карбонатних седимената. У том смислу први део се односи на појам и значење високе резолуције у секвенционој стратиграфији. Од временских и просторних скала које одговарају сеизмичким профилима у последњих двадесет година метода је нашла примену на скалама које одговарају бушотинским подацима или изданцима. Као најпогоднији седименти за овај тип истраживања су се показали карбонати јер су осетљиви на еустатичке промене, а основе секвенционе стратиграфије ...
    изданак, системска група, јура-креда, карбонатна платформа, плитководна средина
    ... stratigraphy which is demonstrated through several up-to-date papers dealing with Jurassic-Cretaceous carbonates deposited on Tethyan platforms. Key words: outcrop, systems tract, Jurassic-Cretaceous, carbonate platform, shallow-water environment ...
    ... UNGUREANU, R. AND OPRISA, A. 2019. Facies evolution of the Jurassic-Cretaceous transition in the Eastern Getic Carbonate Platform, Romania: Integration of sequence stratigraphy, biostratigraphy and isotope stratigraphy. Cretaceous Research. 99. MITCHUM, JR., R.M., VAIL, P.R. AND THOMPSON III, S ...
    ... ion sequence stratigraphy are carbonates. In the last twenty years, several papers dealing with this issue have been published. The Jurassic-Cretaceous period stands out as a particularly interesting time in geological history, when a large part of the planet was covered by the sea. The method ...

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... rocks have experienced lower-amphibolite facies metamorphism dur- ing an early Late Cretaceous compressional event (Kounov et al. 2010). Sedimentary cover and brittle tectonics The oldest undeformed and non-metamorphosed rocks in the study area are the Santonian to lower Maastrichtian sedi- ...
    ... stic rocks Eastern Vardar ophiolites | Cenozoic plutones |_____ Post-Cambrian' -- ii d 5 š H |_____ Cretaceous sediments |_ pre-Ordovician. 5 % Jurassic-Cretaceous magmatic rocks |} Lower Complex Lž F:| |00 Permo-Triassic magmatic rocks [I eastern Veles series — ——— Š |E uate-Variscan magmatic ...
    ... which was reported as a Cretaceous extensional boundary between the Bulgarian equivalent of Lower Com- plex (i.e. Ograzhden unit) and Vlasina Unit (i.e. low-grade ophiolitic rocks of Struma unit; Zagorchev 1984; Bonev et al. 1995; Ricou et al. 1998). Later, the Cretaceous age of this complex ...

  • Strain Partitioning Around an Indenter During Oroclinal Bending: Inferences From Field Kinematic Study And Analogue Modeling with Application to the European Carpatho-Balkanides Orogen

    Nemanja Krstekanić, Liviu Matenco, Ernst Willingshofer, Marinko Toljić, Uroš Stojadinović (2021)

  • Improvement of education through the cooperation between CEEPUS EURO Geo-Sci network and scientific projects: examples from UB-FMG

    Kristina Šarić, Dejan Prelević, Miloš Marjanović, Uroš Stojadinović, Vladimir Simić (2024)
    CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING

  • Tectonothermal evolution of an asymmetric extensional system: the Juhor Mts in Central Serbia (Northern Serbomacedonian massif)

    Miloš Radonjić, Uroš Stojadinović, Elco Luijendijk, Dejan Radivojević, Željko Golubović, Nikola Vuković (2018)
    асиметрична екстензија, панонски басен, српско‐македонски масив, термохронологија
    ... South  of  our  study  area,  a  coupled  kinematic  and  thermo‐ chronological  study  conducted  in  the  Jastrebac Mts  has  inferred  a  Late  Cretaceous  extensional  de‐ tachment creating the separation between the high‐grade metamorphics of the Serbomacedonian unit  in  the  footwall and  the w ...
    ... ilar  tectonic positions along  the Dinaridic  strike and are  related  to  the extension  recorded  in  the  fore‐arc  basement during the Late Cretaceous subduction of the Neotethys Ocean (see also Antić et al., 2016b;  Toljić  et  al.,  2018).  Field  observations  show  striking morphological,  ...
    ...  M., Matenco, L., Stojadinović, U., Willingshofer, E., Ljubović‐Obradović, L., 2018. Understanding fossil fore‐ arc basins:  inferences from the Cretaceous Adria – Europe convergence  in the NE Dinarides. Global and  Planetary Change. In press.    ...

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

    Vesna Cvetkov, Emo Marton, Vesna Lesić, Dragana Tomić (2015)
    ... Keywords: Paleomagnetism, Jurassic-Early Cretaceous, Danubicum, Eastern Serbia The Danubicum extends from South Carpathians (Romania) southward in Eastern Serbia and continues in western Bulgaria. This unit is composed of Arjana, Coşuştea, Upper and Lower Danubian thrust complexes. Our area of i ...
    ... 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 ...

  • 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)