Michal Šujan

Michal Šujan
Comenius University Bratislava · Department of Geology and Paleontology

PhD.

About

84
Publications
23,361
Reads
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460
Citations
Citations since 2016
73 Research Items
451 Citations
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2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
Introduction
I focus primarily on the Late Miocene to Quaternary evolution of the Western Carpathian - Pannonian realm with the use of sedimentology and geochronology. Our team prepares samples for cosmogenic nuclide dating in our department's laboratory. My actual interest is investigation of applicability of the authigenic 10Be/9Be dating in various sedimentary environments and geological settings. I also teach sedimentology and dating methods. Download my papers here: https://geopaleo.sk/sujan-michal/
Additional affiliations
February 2022 - present
Comenius University Bratislava
Position
  • Professor (Associate)
February 2022 - present
Comenius University Bratislava
Position
  • Professor (Associate)
January 2022 - present
Comenius University Bratislava
Position
  • Professor (Associate)
Education
September 2012 - August 2016
Comenius University Bratislava
Field of study
  • Sedimentology
September 2010 - August 2012
Comenius University Bratislava
Field of study
  • General geology and tectonics
September 2007 - August 2010
Comenius University Bratislava
Field of study
  • general geology and tectonics

Publications

Publications (84)
Article
This study examines the suitability of the authigenic 10Be/9Be dating method to the dating of the deposits of an incising river, taking as an example the Nová Vieska river terrace, which accumulated during the neotectonic inversion of the Danube Basin (western Slovakia). The succession was formed by a wandering river with minor preservation of prox...
Preprint
Full-text available
The depositional record of intermontane basins provides a valuable archive of the temporal evolution of orogenic belts; their common isolated nature, however, hinders the efficient usage of standard approaches to constrain the age of a basin fill. In this paper the authigenic 10Be/9Be dating method is employed to construct an age model of the exist...
Preprint
Full-text available
This study examines the suitability of the authigenic 10Be/9Be dating method to the dating of the deposits of an incising river, taking as an example the Nová Vieska river terrace, which accumulated during the neotectonic inversion of the Danube Basin (western Slovakia). The succession was formed by a wandering river with minor preservation of prox...
Conference Paper
Full-text available
The ratio of radionuclide 10Be and stable nuclide 9Be in a water column is affected by proximity of terrestrial sources, since 9Be is derived from weathering of rock masses, while cosmogenic 10Be has a meteoric origin. Prograding of river deltas forming deltaic parasequences (high frequency cycles) as well as prograding of shelf slopes (4th and hig...
Conference Paper
Full-text available
The principle of authigenic 10Be/9Be dating method is similar to any other radiometric dating method which utilizes the equation N=N0 e-λt. However, the different source of the isotopes 9Be (from weathering of rock massifs) and 10Be (from atmosphere, through spallation reaction) brings some difficulties in direct application of the authigenic 10Be/...
Conference Paper
Full-text available
The authigenic 10Be/9Be ratio provides an important geochronological tool to date a depositional age of clay bearing sediment, nevertheless, recent studies showed that the initial 10Be/9Be ratio might be affected by changes in paleoenvironmental conditions and post-depositional processes. The method is based on the ratio of atmospheric cosmogenic r...
Preprint
Full-text available
In a recent paper by Palcu et al. (2021: Scientific Reports 11, Art. Nr.: 11471), the Cape Panagia section on the Taman peninsula (Russian Black Sea) was dated using magnetostratigraphy, in order to calibrate the timing of previously published regressions of the Paratethys megalake. The authors of the paper claim that this “largest megalake in the...
Article
Full-text available
V oblasti Mlynskej doliny v Bratislave boli skúmané sedimenty Panónskeho jazera. Nový výskum stanovil vek záplavy jazera na úpätí Malých Karpát. Aké boli podmienky prostredia, ktoré tu pred asi 10 miliónmi rokov panovalo?
Article
Studies of seismically triggered deformations in the depositional record contribute significantly to our knowledge of earthquake recurrence over geological time. This paper describes soft sediment deformation structures preserved in a periglacial Upper Pleistocene succession of eolian sand in the eastern Vienna Basin, Central Europe. The strata wer...
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...
Preprint
Full-text available
Final version published here: https://www.sciencedirect.com/science/article/pii/S0037073822000240 The manuscript is a non-peer reviewed preprint submitted to EarthArXiv. Seismic hazard assessment is an important issue in geological research. Paleoseismological studies of the depositional record contribute significantly to our knowledge of earthqua...
Article
Full-text available
The depocenters of epicontinental basins usually comprise relatively continuous depositional records, and these can be used in the determination of sediment routing and paleogeographic changes via a set of various geophysical, sedimentological, biostratigraphic and geochronological approaches. Although the margins of such basins will have a major r...
Poster
Full-text available
Paleoseismological research focused on the intensity and recurrence intervals of earthquakes trough geological time is of primary importance for the prediction of geohazards related to seismic events. It is done routinely by dating the exposure of fault scarps using in situ produced cosmogenic nuclides, by dating the deposition of strata progressiv...
Article
Full-text available
The study focuses on the upper Miocene colluvial to alluvial fan deposits of the Modrová Mb., which accumulated on the marginal blocks of the Považský Inovec Mts., transitional to surrounding depressions of the Danube Basin. These blocks are delimited tectonically according to the geophysical evidence, and the late Miocene normal faulting produced...
Presentation
Full-text available
The ratio of channel belt to overbank deposits in alluvial sequences and the variability in channel belt distribution are the most important characteristics of alluvial stratigraphic architecture. The ratio of floodplain facies to channel fills is determined by the sediment supply to accommodation rate ratio, yet the relation is probably more compl...
Conference Paper
Full-text available
Bourlès et al. (1989: Geochim. Cosmochim. Acta) suggested that authigenic 10Be/9Be ratio could provide a geochronological tool to date deposition of clay-bearing sediment settled in a water column up to 14 Ma old. It is based on ratio of atmospheric cosmogenic radionuclide 10Be delivered to depositional environments by precipitation and stable 9Be...
Conference Paper
Full-text available
The authigenic 10Be/9Be dating method utilizes the ratio of cosmogenic radionuclide 10Be produced in the atmosphere and of stable 9Be derived from chemical erosion of rock massifs.Different origin of both nuclides points to difficulty in determination of the initial isotopic ratio, which radioactive decay is the base of age calculation using the eq...
Article
Full-text available
To track the evolution and formation of one of the major sub-basins of the Pannonian back-arc basin system, we re-evaluate pre-rift, syn-rift, post-rift, and inversion stages of the Danube Basin. This synthesis builds upon a new compilation of (i) geophysical measurements, (ii) current data about the substratum of the basin, (iii) recent advances i...
Article
Full-text available
The Cretaceous basement of the broader NW Pannonian Basin, including the Vienna Basin, has an Alpine nappe structure that can be correlated between the Eastern Alps and the Western Carpathians. For the first time in this region, based on the systematic integration of petroleum industry vintage 2D reflection seismic data with well data from Austria,...
Article
Full-text available
LiDAR data in the research of dolines on the plateaus of the Kuchyňa-Orešany Karst The paper presents the usage of LiDAR data as a basemap for spatial analyses in geographical informational systems (GIS) to identify count, depth and perimeter of doli-nes in the karst area in the Little Carpathian Mountains (Malé Karpaty in Slovak). Specifically, th...
Article
The Cretaceous basement of the broader NW Pannonian Basin, including the Vienna Basin, has an Alpine nappe structure that can be correlated between the Eastern Alps and the Western Carpathians. For the first time in this region, based on the systematic integration of petroleum industry vintage 2D reflection seismic data with well data from Austria,...
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
The Miocene genus Rzehakia, an endemic brackish bivalve that lived in the Paratethys Sea, recorded in late Ottnangian sediments deposited during the regression of the Central Paratethys Sea in the semi-enclosed Alpine-Carpathian foreland basin, is closely related to the Rzehakia found hundreds of kilometres away in the early Badenian transgressive...
Article
Full-text available
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...
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
The Neogene Transylvanian Basin (TB), enclosed between the eastern and southern Carpathians and the Apuseni Mountains in Romania, is a significant natural gas province with a long production history. In order to improve the (bio) stratigraphic resolution, correlations and dating in the several 100-m-thick upper Miocene (Pannonian) succession of the...
Article
Full-text available
V posledných dvoch desaťročiach nastali významné zmeny v litostratigrafickej koncepcii sedimentov vrchného miocénu až kvartéru Dunajskej panvy. Nová koncepcia vychádza najmä z novej genetickej (sedimentologickej) definície súvrství a pomerne veľkého množstva nových údajov o ich veku. Na základe dokumentácie vrstevných sledov podľa odkryvov alebo pr...
Article
Full-text available
The lower Turolian (MN11) assemblage of rodents collected from new temporal outcrop near Triblavina (Danube Basin, Western Slovakia) is described. Fossils were collected from at least 2.5 tons of sediment that was wet sieved on a set of stable sieves. The mesh size of the lower sieve was 0.5 mm and the residue was not treated with acids for the sak...
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
Relationships between spatially variable accommodation rate and the distribution of channel belt deposits are important issues in alluvial stratigraphy. This segment of sedimentology still records important progress using experimental models and field examples. This study focuses on the alluvial stratigraphy of the Volkovce Fm. which was deposited...
Article
Full-text available
A new stratigraphic standard for the open lacustrine to deltaic Pannonian Stage is emerging from the combined sedimentological, lithostratigraphical, sequence stratigraphical, biostratigraphical, seismic stratigraphical, geochronological, and magnetostratigraphical investigations of 6 long drill cores. These were drilled by Paks II Nuclear Power Pl...
Conference Paper
Full-text available
The Pannonian Basin System (PBS), located between the mountain chains of the Carpathians, Eastern Alps and Dinarides (Central Europe), experienced a long lasting accumulation in post-rift settings during the late Miocene. A major change in depositional record was caused by the following Pliocene basin inversion. Lithospheric scale folding was refle...
Conference Paper
Full-text available
Revealing of connections between spatial variability of alluvial depositional systems and changes in accommodation rates is often obscured by a lack of age constraints, which are necessary for age-depth models. The authigenic 10Be/9Be dating method provides a strong geochronological tool for the late Cenozoic deposits, with possibility to date the...
Chapter
Full-text available
The modern appearance of Bratislava city mirrors the geological evolution of the area. The last approximately 15 million years left the most significant traces when the combination of tectonic effects and sedimentation resulted in the presence of the Badenian Sea, Pannonian Lake with the paleo-Danube Delta, Danube raging during ice ages and meander...
Poster
Full-text available
The Transylvanian Basin (TB), enclosed between the Eastern and Southern Carpathians and the Apuseni Mts. in Romania, accommodates a several-hundred-meter thick Upper Miocene (Pannonian) sedimentary sequence. Data on its fossils are few and scattered in the literature, consequently its biochronostratigraphic assessment implies much uncertainty. The...
Conference Paper
Full-text available
The Transylvanian Basin (TB), enclosed between the Eastern and Southern Carpathians and the Apuseni Mts. in Romania, accommodates a several-hundred-meter thick Upper Miocene (Pannonian) sedimentary sequence. Data on its fossils are few and scattered in the literature, consequently its biochronostratigraphic assessment implies much uncertainty. The...
Conference Paper
Full-text available
Constraining the geochronology of epicontinental depositional record of the Central Paratethys remains still a challenging issue. The authigenic 10Be/9Be dating method provides a strong geochronological tool for the late Cenozoic deposits, with possibility to date the event of sedimentation of clay particles (Bourlés et al., 1989; Šujan et al., 201...
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
Seismically active fault zones receive a great deal of attention due to their potential for quantification of seismic hazards. Zones with low slip rates pose a challenge, however, since their poor topographic expression is related to difficulties in the quantification of fault movement. This study focuses on the Dobrá Voda Depression, an area with...
Article
Full-text available
Abstract: The Dobrá Voda seismoactive area is the most significant seismic source zone in terms of seismic hazard of Slovakia. It is situated at the contact of the Bohemian Massif, Western Carpathians, and Eastern Alps. On the surface, the Dobrá Voda seismoactive area is built from the Triassic carbonate rocks overlain by Cainozoic sediments. The...
Article
Full-text available
The studied area, as the part of the Malé Karpaty Mts., is an integral part of the Western Carpathian orogenic belt. The Komberek karst area is built up by the Tatricum and Fatricum tectonic units. The studied area belongs to the Kuchyňa-Orešany Karst, where on the northeastern part the karst plain Komberek (Kŕč) Hill (409 m a.s.l.) is situated. Du...
Article
Full-text available
The purpose of the study was to investigate, whether the newly developed laboratory at the Dept. of Geology and Palaeontology (Comenius University in Bratislava, Slovakia) is suitable for processing of samples for authigenic 10Be/9Be dating method. The approach was validated on reprocessing of four samples, which were previously analysed at CEREGE...
Article
Full-text available
The Danube Basin, located in the junction of the Eastern Alps and Western Carpathians, comprises up to 600 m thick alluvial succession, which was previously assigned to Quaternary without geochronological constraints. The internal stratigraphy and timing of the succession remained unknown, although it has potential to provide an important record of...
Conference Paper
Full-text available
Terrestrial sediments are notoriously difficult to date due to a usual scarcity of bio-stratigraphically significant fossils and poor preservation of volcanic ashes. The authigenic 10Be/9Be dating has an unprecedented potential to overcome this problem (1). It can be performed on generic fluvial and lacustrine clays with an age range of 0.1 to 14 M...
Article
Full-text available
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
Assessment of vertical movements of tectonically bounded blocks is crucial for determination of geohazards in densely inhabited zones, such as the border zone of western Slovakia and eastern Austria. The morphostructure of the Malé Karpaty Mts. divides the Vienna and Danube basins in the Western Carpathian - Eastern Alpine junction, and its neotect...
Conference Paper
Full-text available
The Dobrá Voda depression represents a major seizmogenic zone on a transition between Vienna and Danube basins in the Eastern Alpine - Western Carpathian junction. The only 5 km wide basin is bounded by elevated horsts of Mesozoic carbonates and early to middle Miocene clastics. Sedimentological investigations and dating methods were applied to Qua...
Article
Full-text available
The correlation of high-resolution water seismic profiles measured at Lake Balaton and Pannonian strata in outcrops and boreholes around the lake has been the subject of research for nearly 30 years. The first attempt to find a correlation was presented by SACCHI et al (1998, 1999). They suggested that the silicified carbonate cones (i.e. the “geys...
Conference Paper
Full-text available
Objectives: During the Late Miocene, an enormous and long-lived lake – Lake Pannon – with rich endemic fauna covered most of the intra-Carpathian realm. Today, the Pannonian sediments occur in a more or less contiguous area in the central, southwestern and eastern part of the Transylvanian Basin (TB), which is a compressional back-arc basin. After...