Marianna Kováčová

Marianna Kováčová
Comenius University Bratislava · Department of Geology and Paleontology

associate professor

About

67
Publications
27,770
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733
Citations
Citations since 2016
34 Research Items
474 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100

Publications

Publications (67)
Article
The Danube Basin represents a northwestern depocenter of the Middle Miocene Central Paratethys Sea, which was succeed by the Late Miocene Lake Pannon. Although this is an extensively examined area, the application of multidisciplinary studies has proven capable of drawing attention to novel information concerning the depositional environment. Thus,...
Chapter
Ostracods, charophytes and pollen were retrieved from sediments of the Baynunah Formation. Autoecological characteristics of the ostracods and the charophytes, together with detailed observations on the taphonomy of ostracod valves, provide a reconstruction of the depositional environments of the Baynunah freshwater system. These microfossil assemb...
Article
Full-text available
International chronostratigraphic chart showing division of geological time and its numerical ages is regularly updated by the International Commission on Stratigraphy (ICS). The Slovak chronostratigraphic chart has not been updated since the end of the 1980s. This paper provides an overview of standard procedures for deriving Slovak terms; introdu...
Article
Full-text available
The Lipovany and Mučín paleobotanical localities contain important floral associations within the tuff horizons, which were used for determination of subtropical to tropical climatic conditions during the Early Miocene. Based on the combination of results from plagioclase and biotite 40Ar/39Ar dating, the age of the tuff deposition is around 17.3Ma...
Preprint
Ostracods, charophytes and pollen were retrieved from sediments of the Baynunah Formation. Autoecological characteristics of the ostracods and the charophytes, together with detailed observations on the taphonomy of ostracod valves, provide a reconstruction of the depositional environments of the Baynunah freshwater system. These microfossil assemb...
Article
Full-text available
The present paper provides new data about genus Carpinus in Cenozoic sediments in Bulgaria. A summary of the available data is also presented. We focus our study on the macro-remains recorded as bract imprints. The available data for fossil bract imprints are very limited and cover a short interval of time: from the Middle Miocene to the Late Plioc...
Article
The study of pollen spectra mirrors the evolution of landscape and climatic changes in the northwestern part of Central Paratethys domain during the regional stages Karpatian–Badenian (Late Burdigalian–Langhian to Early Serravalian; NN4‐NN6 biozone). This interval includes the Miocene climatic optimum (MCO) and the Miocene climatic transition (MCT)...
Article
Full-text available
The Miocene global climatic changes together with profound regional tectonic activity significantly influenced the Central Paratethys epicontinental sea. The aim of this study was to reveal relationships between regional and global changes during the beginning Middle Miocene Climatic Transition. The work focused on the northern margin of the Pannon...
Article
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The late Badenian and Sarmatian (Serravallian) evolution of depositional environments in the Danube Basin (Želiezovce Depression) has never been fully explored. Here, we clarify the paleoenvironmental changes which took place in this area during the late Badenian and Sarmatian on the basis of sedimentological, petrographic, biostratigraphic and pal...
Chapter
Large areas of Earth’s continents were covered by temperate forests before the dramatic increase of the human population in the past two millennia. Prior to human expansion, temperate forests were more extensive in the Neogene (23–2.6 Ma) when climate at the middle latitudes was slightly warmer and more equable than at the present. These temperate...
Article
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The Oligocene Tard and Kiscell formations represent classical source rock examples in the Hungarian part of the Danube Basin. Similar sediments recorded in the Slovak part of the Danube Basin were studied by Rock-Eval pyrolysis in this paper, while their stratigraphic position was supported by the foraminiferal and nannoplankton biostratigraphy. Re...
Article
Full-text available
Deep wells penetrated Cenozoic sedimentary record of two different basins: 1) Oligocene retro-arc basin which is buried under the 2) Miocene back-arc Danube Basin. This study is focused on biotic and abiotic proxies discussed in terms of existing biostratigraphical, paleoenvironmental and sedimentological data. Biotic proxies are represented by pal...
Article
Full-text available
We present new age constraints for the late Miocene Volkovce Formation of Slovakia, alluvial facies that accumulated adjacent to Lake Pannon. Facies analysis and authigenic 10Be/9Be dating was undertaken at the Bernolákovo and Triblavina localities while the latter outcrop also yielded additional small mammal and mollusk assemblages as well as rema...
Article
Full-text available
The Kuchyňa tuff is found on the Eastern margin of the Vienna Basin and was formed by felsic volcanism. The Ar/Ar single grain sanidine method was applied and resulted in an age of 15.23 ± 0.04 Ma, which can be interpreted as the age of the eruption. The obtained numerical age is in accordance with the subtropical climate inferred by the presence o...
Article
Full-text available
Reconstruction of past vegetation and climates in the Çankırı-Çorum Basin, one of the largest basins of Central Anatolia, is important for understanding the regional palaeovegetation. In this study, the palaeovegetational and palaeoclimatic proxies of the basin within the late middle Miocene and early Pleistocene interval are presented using the In...
Article
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The problem of paleoclimate reconstruction is an extremely interesting issue, which has been repeatedly discussed in many publications. This topic engages the attention of numerous specialists in many and various scientific disciplines. Fossil plants have vast potential as a source of information about past climatic conditions in the terrestrial re...
Poster
Full-text available
The Pozba-4 well (Poz-4; 48° 4' 43.07" N, 18° 27' 32.85" E) was drilled in the Northern Želiezovce Depression, of the Danube Basin and it uncovered 940 m thick sequence of Neogene sediments. The Cenozoic basement is formed by the Triassic dolomites and meta-sandstones. The main focus of this study are the sediments of the Pozba-Vráble Formation (up...
Poster
Full-text available
The Modrany-1 and Modrany-2 wells, drilled in the Želiezovce depression of the Danube Basin penetrated theMiocene (NN5, NN6 and NN9) and Oligocene (NP21-22) sedimentary record with total thickness exceeds 2200m. Biostratigraphy and sedimentology of MOD-1 well have been studied extensively in Kováč et al., 2018 and was delimitated pre-Neogene baseme...
Conference Paper
Full-text available
Upper Cenozoic epicontinental sequences of the Central Paratethys often have a poorly constrained geochronological framework due to highly endemic fauna, lack of datable volcanic ashes and discontinuous depositional record unsuitable for magnetostratigraphy. As a novel geochronological tool, we used the authigenic 10Be/9Be dating method, which is a...
Article
Full-text available
A discrepancy is found between the leaf morphology of fossil material and its species identification, which has been defined so far as Acer sanctae-crucis. The material originates from the Sarmatian flora of Močiar locality (central part of Slovakia). According to all morphological features that can be identified on the incomplete leaf imprint, we...
Article
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The Komjatice depression, situated on the Danube Basin’s northern margin, represents a sub-basin of the Neogene epicontinental Central Paratethys Sea and Lake Pannon. The paper provides an insight into the character of sediment provenance evolution by study of well cores (ZM-1, IV-1, MOJ-1, VR-1 wells). A modern combination of provenance, sedimento...
Article
The Danube Basin is situated between the Eastern Alps, Western Carpathians and Transdanubian mountain ranges and represents a classic petroleum prospection site. The basin fill is known from many 2D reflection seismic lines and deep wells with measured e-logs which provided a good opportunity for theories about its evolution. New analyses of deep w...
Article
Full-text available
A comprehensive " model " of the semi-closed Central Paratethys Sea history was proposed for the entire time span of 25 Ma. Publications and datasets of the last decades were compiled and reviewed in the light of the Western Carpathian basins record, reflecting its changing palaeogeography, palaeoenvironment, and water circulation regimes. Moreover...
Article
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Revisory research of floral and animal assemblages from the Neanderthal site of Gánovce-Hrádok confirmed the previous stratigraphic division of the travertine mound to five horizons on the basis of different petrological and palaeontological contents, indicating climatic and palaeoenvironmental changes in the vicinity, from the Saalian termination...
Article
Full-text available
Revisory research of floral and animal assemblages from the Neanderthal site of Gánovce-Hrádok confirmed the previous stratigraphic division of the travertine mound to five horizons on the basis of different petrological and palaeontological contents, indicating climatic and palaeoenvironmental changes in the vicinity, from the Saalian termination...
Article
Full-text available
The Danube Basin is situated between the Eastern Alps, Central Western Carpathians and Transdanubian Range. The northwestern embayment of the basin is represented by the Blatné depression with deposits ranked into the Langhian–Serravallian (Badenian, Sarmatian) and Tortonian–Pliocene (Pannonian–Pliocene). They are documented by the NN4, NN5 and NN6...
Conference Paper
Full-text available
The ALErT project targets on climate and tectonic hazards in the densely populated regions in the Central Anatolian Plateau (CAP), within the framework of the Marie Curie FP7-PEOPLE-2013-ITN program, The CAP extends in a wide area in between zone the Aegean extensional zone and Bitlis /Zagros compressional zone. Çankırı Basin (in the middle CAP) is...
Article
Full-text available
Late Messinian palynoflora from Central Anatolian Plateau (Çankırı Basin) Muge Atalar, Marianna Kováčová, Mine Sezgül Kayseri Ozer, Torsten Utescher Abstract ABSTRACT Within the framework of the Marie Curie FP7-PEOPLE-2013-ITN program, the ALErT project targets on tectonic and climatic boundary conditions in the regions along the densely populat...
Conference Paper
Full-text available
The Central Anatolian Plateau (CAP) extends in a wide area between the Bitlis/Zagros compressional zone and the Aegean extensional zone. The Neogene unit in the study area is Bozkır formation and Süleymanlı formation of Messinian to Pliocene age. The Bozkır formation deposited in the Çankırı Basin, which is localized in central Anatolia, bounded to...
Article
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The Ratkovce 1 well, drilled in the Blatné depocenter of the northern Danube Basin penetrated the Miocene sedimentary record with a total thickness of 2000 m. Biostratigraphically, the NN4, NN5 and NN6 Zones of calcareous nannoplankton were documented; CPN7 and CPN8 foraminifer Zones (N9, 10, 11 of the global foraminiferal zonation; and MMi4a; MMi5...
Conference Paper
Full-text available
Anatolian plateau climate and tectonic hazards (ALErT) is an European Union project. This project was initiated (and coordinated) by Prof. Dr. Manfred Strecker and his team at the Potsdam University in Germany. That is funded initiative of 10 European academic and 5 industry partners in the fields of applied Earth sciences, natural hazard monitorin...
Article
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A new plant assemblage of Cerová-Lieskové documented by fossil macro- and microfloristic records from the directly dated deposits of Karpatian age in W Slovakia is reported. It includes besides conifers represented by Pinus and Tetraclinis salicornioides foliage and pollen of the Cupressaceae, Pinaceae, Pinus and Cathaya also by a few angiosperms t...
Article
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Selected Central and Southeastern European plant assemblages were com-pared to throw new light on the late Miocene evolution of European ecosys-tems and climate dynamics. A practical comparison of Bulgarian, Slovak and Czech palaeofloras provides new data about south-north trend in vegetation distribution patterns in studied area. Changes in abunda...
Article
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Geological task Update of geological setting of problematic areas in the Slovak Republic at a scale of 1 : 50 000 was solved in order to clarify the geological setting in selected areas in the Slovak Republic, which visualization in the digital geological map of the Slovak Republic (DGM) http://mapserver. geology.sk/gm50js/ was not sufficient regar...
Article
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The Çankiri Basin, located in the northern part of the Central Anatolian Plateau, is a large Tertiary basin where thick Miocene to Quaternary continental sediments overlay the Cretaceous-Tertiary units. This investigation focuses on the Tuǧlu Formation, an Upper Miocene succession mainly composed of dark grey silty and organic rich clays. The type...
Article
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The Cenozoic structure of the Western Carpathians is strongly controlled by faults. The E-W striking Vikartovce fault is one of the most distinctive dislocations in the region, evident by its geological structure and terrain morphology. This feature has been assumed to be a Quaternary reactivated fault according to many attributes such as its perfe...
Article
Full-text available
Miocene vegetation pattern and climate change in the northwestern Central Paratethys domain (Czech and Slovak Republic) The case study area covers the slopes of the tectonically quiet European platform and foreland of the tectonically active Carpathian mountain chain (Carpathian Foredeep and Vienna Basin). Therefore the research on pollen spectra m...
Article
Full-text available
The Badenian (Langhian-Early Serravallian) marine sediments from the adjacent areas within the Central Paratethys and NE part of the Vienna Basin, were studied from a palynological perspective. The pollen data document a subtropical climate during the Mio-cene Climatic Optimum with dominant representation of zonal vegetation being evergreen broadle...
Article
Full-text available
The Badenian (Langhian - Early Serravallian) marine sediments from the adjacent areas within the Central Paratethys and NE part of the Vienna Basin, were studied from a palynological perspective. The pollen data document a subtropical climate during the Miocene Climatic Optimum with dominant representation of zonal vegetation being evergreen broadl...
Conference Paper
With elevations of several kilometers, low local relief and pronounced relief contrasts with surrounding regions, orogenic plateaus are first-order tectonic and topographic features of several Cenozoic mountain belts. The morphologic characteristics of plateaus may result from efficient tectonic uplift of mountain ranges that successively incorpora...
Article
Full-text available
During Late Miocene, the Western Carpathian paleogeography started to change. The Lake Pannon retreated southwards, and the northern coast of the back arc basin was slightly elevated due to progradation of deltaic and alluvial facies, especially in the lowlands. The studied „Pannonian lake" sediments come from the Czech and Slovak parts of Central...
Article
Full-text available
Presented paper deals with preliminary results of a complex study on travertine build-ups in Spiš and Liptov regions (northern Slovakia). Four travertine sites (Lúčky, Bešeňová, Ružbachy and Spišský hrad – Dreveník) were chosen for detailed studies. Two main facies: proximal and distal are distinguished. The proximal facies consists of crystalline...
Article
Full-text available
The studied fossil flora comes from two adjacent localities of Egerian and Eggenburgian age, in the South Slovakian basin. Extrazonal vegetation and riparian forest taxa with a high percentage of herbs prevail in the material from the old clay pit in Slovenské Ďarmoty (Egerian). Palaeoclimatic conditions are estimated to be humid and subtropical. T...
Article
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The last systematic research (1996-2000) of the Early Villányian Hajnáčka I site (MN 16a) yielded many new fossils and geological data. Six stages could identified in the evolution of Hajnáčka I's palaeoenvironment - from the initial phreatic explosions and phreatomagmatic eruptions which created the Bone Gorge maar where the maar lake formed after...
Article
The Danube Basin situated at the Alpine–Carpathian–Pannonian junction represents a region of the Central Paratethys strongly influenced by orogen building processes and climatic changes. The geodynamic development mirrors gentle docking of the Carpathians into the European platform margin, associated with synrift and later postrift subsidence of th...
Article
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The digital elevation model (DEM) helps to express Neogene landscapes and vegetation on palinspastic maps with reconstructed orography. To reconstruct ancient vegetation cover, basic zonal vegetation formations and their characteristics have been defined based on diversity and proportions of zonal woody evergreen, deciduous, sclerophyllous and legu...
Article
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Abstrakt. Zmeny paleogeografie a paleoklimatických podmie-nok počas miocénu a pliocénu výrazne ovplyvnili akvatické a terestrické ekosystémy, ako aj rozmanitosť paleobiotopov v oblasti Západných Karpát. Štúdium týchto udalostí v čase a priestore bolo predmetom výskumov v rámci účasti sloven-ských geológov a paleontológov na projekte ESF – EEDEN (Eu...
Article
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Diversified microflora and fauna community have been found in the psamitic and aleuritic deposits of the Vienna Basin. The sediments are assigned to the Pannonian, zone E corresponding with regional cycle CPC 7 dated to the period 10.5? – 8.2? Ma. Mass occurrence of the eutrophic green algae and a mixed taphocenosis of the freshwater and brackish o...