András Nagymarosy
Eötvös Loránd University
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Featured researches published by András Nagymarosy.
Tectonophysics | 1992
László Csontos; András Nagymarosy; F. Horváth; M. Kovác
Abstract The Outer Carpathian flysch nappes encircle an Intra-Carpathian domain which can be divided into two megatectonic units (North Pannonian and Tisza) mostly on the basis of contrasting Mesozoic and Palaeogene facies development. We see two major kinematic problems to be solved: 1. (1) The present distribution of the Mesozoic and Palaeogene facies is mosaic-like, and some belts form exotic bodies within realms of Austroalpine affinity. 2. (2) Late Eocene palinspastic reconstruction of the Outer Carpathian flysch nappes suggest, that the entire Intra-Carpathian area must have been located several hundreds of kilometres to the south and to the west of its present position. Neogene extension can account for shortening in the external Carpathian nappes, but is unable to explain Mesozoic facies anomalies and offsets of Palaeogene formations. We suggest that evolution of the Intra-Carpathian area involved first Late Palaeogene-Early Miocene juxtaposition of the North-Pannonian and Tisza megatectonic units, accompanied by the closure of the external Carpathian flysch troughs; thereafter extension of this amalgamated unit occurred, which was compensated by thrusting of flysch nappes onto the European foreland and formation of molasse foredeeps. Eastward escape of the North-Pannonian unit from the Alpine collisional belt involved left lateral shear along the Pieniny Klippen belt and right lateral shear along the Mid-Hungarian zone. Parts of the Late Palaeogene basin and an Early Miocene volcanic edifice were dissected, offset and elongated by several 100 kms. The driving mechanism of the eastward escape of the Intra-Carpathian area can be related to the collision of Apulia and Europe and the subduction of the external Carpathian crust under the Pannonian units. The escape ceased gradually in the Early Miocene, when oblique collision between the North-Pannonian unit and European continent occurred. Neogene extension of the Pannonian region was an areal deformation. The extension at locally variable rate resulted in the break-up of the heterogenous floor of the Neogene basin. The driving mechanism of basin extension and contemporaneous compressional deformation of the external Carpathians is thought to be related to ongoing subduction, involving the marginal part of the attenuated European continental crust. Tectonic activity in the Carpathians and basin subsidence and volcanism shifted in time and in unison from the west toward the east-southeast.
Tectonophysics | 1998
László Csontos; András Nagymarosy
A novel catalyst and process for producing crystalline polypropylene and its copolymers with other alpha-olefins which can substantially reduce the amount of low-molecular-weight and amorphous polymers formed without reduction in the polymerization rate. This novel catalyst and process are useful in slurry polymerization, bulk polymerization and polymerization techniques in which polymerization is accomplished utilizing monomer substantially in the vapor phase.
Tectonophysics | 1993
Michal Kováč; András Nagymarosy; Ján Soták; Katarína Šutovská
Abstract The evolution of the Tertiary basins in the Western Carpathians was closely connected with the evolution of the Carpathian orogenic belt. During the Oligocene, the sea of the Outer Carpathian flysch troughs became for the first time part of the Paratethys regime due to isolation from the Mediterranean Tethys. Oblique collision between the North European Platform and the overriding West Carpathian Plate during the Early Miocene led to the development of the outer accretionary wedge, built up mainly from flysch nappes, and the formation of a foredeep. Intramontane basins developed in transpressional regime along the northern margin of the Early Alpine consolidated Central Carpathians, from where the sea also invaded the hinterland of the orogenic mountain chain. Progradation of the Alpine nappes gradually closed the Early Miocene (stage Eggenburgian) seaway in front of the Alps which led again to the isolation of the basins inside the West Carpathian segment. The marine connection with the Mediterranean started to open again through the West Carpathian hinterland at the end of the Early Miocene (stage Karpatian). In the Middle Miocene, the Outer Carpathian accretionary wedge obtained its present position, followed by the eastward migration of foredeep depocentres. Inside the orogenic belt large transtensional basins opened. The final closure of the marine connections (stage Badenian) led to a gradual decrease of salinity during the Late Miocene. The sedimentation in the Vienna, Danube (Little Hungarian plain) and East Slovakian (Transcarpathian) basins during the Late Miocene and Pliocene was influenced mainly by the thermal subsidence of the Pannonian domain.
Geological Society, London, Special Publications | 1999
István Györfi; László Csontos; András Nagymarosy
Abstract The Mid-Hungarian Lineament is the most important tectonic feature of the Intra-Carpathian area. Its evolution is closely related to the Early Tertiary (Palaeogene-Early Miocene) episodes of basin formation. This paper attempts to explain the structural relationships between the Transylvanian Palaeogene Basin and the Mid-Hungarian Lineament. Microtectonic data collected on the field, combined with the available geological and geophysical data point to the following conclusions. (1) The first compressional event is probably Early Oligocene in age, and is characterized by σ1 oriented ENE-WSW. We assume that the Oligocene basin is flexural in origin. (2) The second phase of compression occurred during Early Miocene times with σ1 oriented NNW-SSE. The last thrust emplacement accounts for the Ottnangian-Karpatian overthrusting of the Alcapa block on top of the Tisza-Dacia block. This deformational phase could have induced large-scale block rotations in both units. (3) Late Miocene left lateral faulting occurred along the Dragos-Voda fault system, the effects of which can be traced as far as Hungary. This event most probably corresponds to an eastward escape of the Tisza-Dacia block with respect to surrounding terranes.
Tectonophysics | 1993
András Nagymarosy; Maria Båldi-Beke
Abstract In the Szolnok unit, a flysch trough, beneath the Great Hungarian Plain, a more than 1000 m thick clastic sedimentary series has been penetrated by drilling activity in the last few decades. Refering to the non-continous core material this sequence is built up by rhythmic, turbidite-dominated sandstones and shales. Earlier, the flysch series was thought to have been continuously deposited during the Cretaceous and the Paleogene. The detailed study of the available drilling cores proved that only a few Late Cretaceous and Paleogene nannoplankton zones are present in the sequence and there is no positive evidence for the others. Evidence was found for the presence of Campanian-early Maastrichtian, latest Paleocene-Early Eocene, Middle Eocene (Bartonian) and early Priabonian, as well as for most Oligocene nannoplankton zones. The Szolnok unit is thrust and folded into imbricated structures. Micropaleontological investigations suggest evidence for post-Oligocene compressional deformation. This non-continuous stratigraphic built up of the Szolnok sedimentary sequence suggests that it can be correlated with some of the Central (“Inner”) Carpathian flysches and strata correlation with the Outer Carpathian flysch units can be excluded. Taking into account all the lithological and paleontological features of the Szolnok unit succession a gradual change of the depositional environment is proposed from deep-water pelagic to shallower environment during the time of its formation.
Archive | 2012
János Haas; András Nagymarosy; Géza Hámor
Historic-cultural precedents for the name of the Pannonian Basin can be found in the Pannonian province of the Roman Empire, whose northern and eastern boundaries were coinciding with the Danube. Telegdi-Roth (1879) created the chronostratigraphic concept of the Pannonian age for the formations of the Transdanubian region, deposited between the Sarmatian and Pleistocene, and being distinct from both of them. Anyhow, the basin-fill of the Pannonian Basin cannot be confined only to the deposits of Pannonian age; it comprises practically the whole Neogene–Quaternary rock sequence of the area.
Geologica Carpathica | 2012
Ildikó Selmeczi; Miklós Lantos; Margit Bohn-Havas; András Nagymarosy; Éva Szegő
Correlation of bio- and magnetostratigraphy of Badenian sequences from western and northern Hungary Lithological, magnetostratigraphic and paleontological (nannoplankton, foraminifers, molluscs) studies were carried out on the Badenian successions of boreholes Sopron-89, Nagylózs-1 and Sáta-75 in Hungary. The correlations with the ATNTS2004 scale show that the Badenian sedimentation began during Chron C5Br thus the earliest Badenian deposits are missing in the sections. The first occurrence of Orbulina suturalis Brönnimann has been observed in Subchron C5Bn.1r, at 14.9 Ma. Although it is older than the interpolated age of 14.74 Ma in Chron C5ADr in the ATNTS2004, it is consistent with the age of 15.1 Ma obtained from recent calibration of planktonic foraminiferal bioevents. The base of the Bulimina-Bolivina Zone has been determined at 13.7 Ma in Chron C5ABr, and the Badenian/Sarmatian boundary is recorded within Chron C5AAn, at 13.15 Ma.
Agrokémia és talajtan | 2016
Zsófia Bakacsi; Sándor Koós; András Nagymarosy; Péter László
A kovaval atitatott, alig mallott riolittufat feltaro furasban elenk vizmozgas volt megfigyelhető a fizikai aprozodas soran felnyilt kőzetrepedeseknek koszonhetően, a meresek alapjan szamolt hidraulikus vezetőkepessege a valyog–homokos valyog fizikai talajfelesegű szintekehez hasonlo. A megjelenese alapjan „vulkani homok”-kent aposztrofalt, mallott riolittufa viz-vezető kepessege az előzetesen vartnal kisebb volt, nagysagrendekkel maradt el a „tenyleges” homok vezetőkepessegetől, megjelenese jelentősen lelassitotta a szel-venyekben tapasztalt vizmozgast; szamolt hidraulikus vezetőkepessege nagysag-rendileg az agyagos valyogehoz all kozel. A tapasztalt jelenseg oka egyreszt az, hogy a mallas soran a kőzetrepedesek eltomődtek, eltűntek, masreszt pedig az, hogy a mallott agyagos resz a durvabb szemcsejű „mallasi maradek” porusterebe uleped-ve a nedvessegmozgas szamara rendelkezesre allo porusteret jelentősen lecsokken-tette. Az eredmenyek azt jelzik, hogy a szőlőteruletek termőhelyi adottsagait meghata-rozo ...
Tectonics | 1983
Leigh H. Royden; F. Horváth; András Nagymarosy; L. Stegena
Geologica Carpathica | 2007
Michal Kováč; Aida Andreyeva-Grigorovič; Zlatan Bajraktarević; Rostislav Brzobohatý; Sorin Filipescu; László Fodor; Mathias Harzhauser; András Nagymarosy; Nestor Oszczypko; Davor Pavelić; Fred Rögl; Bruno Saftić; Lubomír Sliva; Barbara Studencka