Dušan Stárek

Slovak Academy of Sciences

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Radovan Pipík

Earth Science Institute of the Slovak Academy of Sciences

Rastislav Milovský

Earth Science Institute of the Slovak Academy of Sciences

VŠ

Vladimír Šimo

Earth Science Institute of the Slovak Academy of Sciences

LŽ

Lucia Žatková

Earth Science Institute of the Slovak Academy of Sciences

JŠ

Juraj Šurka

Slovak Academy of Sciences

Marina Vidhya

Earth Science Institute of the Slovak Academy of Sciences

Rastislav Vojtko

Comenius University Bratislava

Dhavamani Ramachandran

Earth Science Institute of the Slovak Academy of Sciences

Katarı́na Holcová

Charles University

Peter Bitušík

Matej Bel University

Cooperative Institutions

Slovak Academy of Sciences

Comenius University Bratislava

Earth Science Institute of the Slovak Academy of Sciences

University Library in Bratislava

Matej Bel University

Geological Institute

Charles University

Czech Academy of Sciences, Institute of Geology

Instytut Nauk Geologicznych

National Museum

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Analysis of the trace fossils from Paleogene formations of the Central Western Carpathian (Orava region) [abstract].

Geology Geophysics & Environment (2016)

Vladimír Šimo Dušan Stárek

in the bottom waters.The trace fossils assemblages reflect changes of depositional systems during the tectonic and sequence stratigraphic development of the basin.Early Eocene shallow-sea environment of the Borové Formation including the rocky coast, sandy dynamic littoral, transitional and internal shelf zones are characterized by findings of traces of Entobia, Gastrochaenolites, Nummipera, Ophiomorpha and Skolithos.On the contrary, a significant deepening of the deposition environment during the Oligocene, documented by turbidite sedimentation of Zuberec and Biely Potok formations is characterised by findings of graphoglyptids (Spirorhaphe, Nereites, Paleodiction, Protopaleodictyon, Megagrapton) or traces of deposit feeders (Arthrophycus, Chondrites, Planolites, Phycodes, Scolicia, Zoophycos).

Paleogene

TRACE (psycholinguistics)

10.7494/geol.2016.42.1.126

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Citations (1)

Sub-bottom and bathymetry sonar inspection of postglacial lacustrine infill of the alpine lakes (Tatra Mts., Slovakia)

CATENA (2021)

Dhavamani Ramachandran Radovan Pipík Valentín Sočuvka Juraj Šurka Dušan Stárek

Lithology

Outwash plain

Coring

Bedrock

Deposition

Silt

10.1016/j.catena.2021.105787

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Citations (7)

Correction to: Early Priabonian Mesophyllum dominated coralline algal assemblage from coastal upwelling settings (Central Carpathian Paleogene Basin, Slovakia)

Palaeobiodiversity and Palaeoenvironments (2021)

Juraj Hrabovský Dušan Stárek Katarı́na Holcová Kamil Zágoršek

Paleogene

Assemblage (archaeology)

Pannonian Basin

10.1007/s12549-021-00512-0

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Turbidite sedimentology, biostratigraphy and paleoecology: A case study from the Oligocene Zuberec Fm. (Liptov Basin, Central Western Carpathians)

Geologica Carpathica (2019)

Dušan Stárek Vladimír Šimo Silvia Antolíková Tomáš Fuksi

Abstract Outcrops of a thick turbiditic succession are exposed on the northern bank of the Liptovská Mara reservoir near Liptovská Ondrašová and Ráztoky. The section consists of rhythmic, predominantly thin- to medium-bedded turbidites of the Rupelian age. Their biostratigraphy is based on the calcareous nannofossils. Facies associations of these deposits represent different components of depositional lobe deposits in the turbidity fan system, including mainly the lobe fringe and lobe distal fringe/inter-lobe facies associations and locally the medium bedded deposits of the lobe off-axis facies association. This interpretation is supported by statistical analysis. The deep-sea turbiditic deposits contain trace fossil associations, which include deep-tier fodinichnia and domichnia up to shallow-tier graphoglyptids. Paleocurrent measurements indicate that the majority of sedimentary material was transported from SW and W.

Paleocurrent

Outcrop

Turbidity current

Lobe

10.2478/geoca-2019-0016

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Citations (3)

Eustatic and tectonic control on late Eocene fan delta development (Orava Basin, Central Western Carpathians)

Geological Quarterly (2012)

Dušan Stárek Ľubomír Sliva Rastislav Vojtko

The evolution of the Central Carpathian Paleogene Basin (CCPB) reflects an important role of relative sea level changes on a tectonically active basin margin. After the initial upper Lutetian/Bartonian transgression, the next regressive-transgressive cycle played a key role in a formation of the late Eocene fan delta facies associations in the southern Orava region of Northern Slovakia. Detailed sedimentary analysis allowed the separation of the following three facies associations which represent distinct depositional environments: alluvial fan (subaerial fan delta; Unit 1); subaqueous fan delta (Unit 2); and prodelta/slope and basin (Unit 3). The first stage of delta development is connected with eustatic sea level fall at the Bartonian/Priabonian boundary, accompanied by subaerial exposure, fluvial incision and deposition of alluvial fan sediments. Subaerial deposition was characterized by a variety of mass flow conglomerates with a red muddy matrix, interfingering with stream or sheetflood deposits. The next stage of the delta corresponds to high-amplitude transgression related to rapid tectonic subsidence along the CCPB margins during the Priabonian. The vertical arrangement of facies suggests retrograde delta development that shows rapid submergence of the subaerial parts and onlap of subaqueous mass flow conglomerates, often reworked by waves or wave-induced shallow-marine currents. Continuous deepening of the depositional environment during the late Priabonian/early Rupelian led to the relatively rapid superposition of prodelta/slope and basin facies associations by slowly accumulated hemipelagic deposis

Subaerial

Marine transgression

Onlap

Alluvial fan

Paleogene

Source

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Citations (12)

Magnetic fabrics in the turbidite deposits of the Central Carpathian Paleogene Basin in relation to sedimentary and tectonic fabric elements

Geologica Carpathica (2021)

Jozef Madzin Emő Márton Dušan Stárek Tomáš Mikuš

Paleogene

10.31577/geolcarp.72.2.4

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Citations (2)

Large-volume gravity flow deposits in the Central Carpathian Paleogene Basin (Orava region, Slovakia): evidence for hyperpycnal river discharge in deep-sea fans

Geologica Carpathica (2013)

Dušan Stárek Ján Soták Jozef Jablonský Robert Marschałko

Abstract The deep-water clastic systems of the Central Carpathian Paleogene Basin contain megabeds, which are developed in distinctive stratigraphic horizons and can be traced over long distances. These beds are characterized by great individual thickness (4-13 m), uniform lithology and internal structures. On the basis of their lithology, sedimentary structures and sequence development, the megabeds are characterized by 15 individual facies and interpreted from the viewpoint of flow hydrodynamics. The grain-size distribution and internal structures of the megabeds point to their deposition from uniform turbulent flows. The main controlling factor for generation of such large voluminous flows is inferred in the sea-level changes, when a relative rising of sea level during the Eocene/Oligocene boundary was responsible for long-lasting accumulation of the clastic supply at the basin margins. The large volume of detritus from river discharge and ravinement surfaces of flooded land was accumulated on the shore and in the conduit heads where the sediment was remobilized by other triggers. The flows generated by catastrophic floods during the early Rupelian sea-level lowstand are thought to be the most probably triggering mechanism. The large highly erosive hyperpycnal flows from flooding rivers could erode accumulated deposits in the conduit or on steeper basin-margin slopes and could cause progressive increase of the sand volume in the flow. Conduit flushing appears to be the most probable source of sediment for the very large voluminous flows that were responsible for deposition of the Orava megabeds

Paleogene

Lithology

Paleocurrent

Deposition

10.2478/geoca-2013-0022

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Citations (9)

From oligotrophy to dystrophy: the ontogeny of a humic lake in an extrazonal boreal taiga in Central Europe

Journal of Quaternary Science (2024)

Peter Bitušík Tímea Chamutiová Marina Vidhya Šárka Horáčková Radovan Pipík

ABSTRACT While humic lakes are common in northern Europe, in central Europe they are rare and our understanding of their ontogeny is insufficient. Here, we present the reconstruction of the development of a humic lake in the Tatra Mountains (Slovakia) over the last 8000 years using chironomids along with diatoms, pollen and non‐pollen palynomorphs. The compositional changes in aquatic proxies suggest three developmental stages. Since its formation the lake has been oligotrophic (phase 1), and its chemistry was controlled by subsurface waters rich in base cations buffering the effect of acid humic substances from forest and peat that were already present in the catchment. The beginning of the transition to phase 2 (~4400 cal a bp ) is marked by simultaneous alterations in all proxies. Climate change combined with the local geochemistry was able to alter the limnological conditions supporting unique chironomid assemblages that have no analogues in recent Carpathian lakes. At ~ 3400 cal a bp the lake shifted to a phase when acidophilic/acidotolerant taxa indicate characteristic humic lake conditions (phase 3). Some chironomid taxa appearing ~ 2000 years ago for the first time indicate a dystrophic state in which the lake has remained until now. Human activities have been detected in the area since the Aeneolithic but had no direct influence on the lake.

Green River Formation

10.1002/jqs.3598

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Citations (1)

Ghost shrimps (Decapoda: Axiidea: Callianassidae) as producers of an Upper Miocene trace fossil association from sublittoral deposits of Lake Pannon (Vienna Basin, Slovakia)

Palaeogeography Palaeoclimatology Palaeoecology (2015)

Matúš Hyžný Vladimír Šimo Dušan Stárek

Numerous trace fossils are described from the Late Miocene sediments of the Bzenec Formation exposed at the Gbely section (the Vienna Basin, Slovakia). During deposition of the sediments the area was part of the large, long-lived brackish to freshwater Lake Pannon. Most of the trace fossils are attributed herein to Egbellichnus jordidegiberti igen et ispec. nov. and are interpreted as burrows produced by decapod crustaceans, specifically by a ghost shrimp of the family Callianassidae. This interpretation is based on two independent lines of evidence: environmental requirements of large bioturbators and the burrow morphology itself. The new ichnotaxon is distinguished from other related ichnotaxa by a combination of typically inclined (roughly at an angle of 45°) cylindrical burrows, absence of lining, and tunnels making loops or bends at approximately right angles. The burrow systems at Gbely document the survival of ghost shrimp long after the closure of all seaways and the origin of Lake Pannon. As today, no ghost shrimp are known from long-lived brackish lakes. Egbellichnus from Gbely is the only, although indirect, record of ghost shrimp from a brackish lake environment reported so far.

Burrow

Ichnology

Paleoecology

10.1016/j.palaeo.2015.02.012

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Citations (24)

Early Priabonian Mesophyllum dominated coralline algal assemblage from coastal upwelling settings (Central Carpathian Paleogene Basin, Slovakia)

Palaeobiodiversity and Palaeoenvironments (2021)

Juraj Hrabovský Dušan Stárek Katarı́na Holcová Kamil Zágoršek

10.1007/s12549-021-00488-x

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Citations (0)