TY - JOUR AU - Kovács, István János AU - Kiss, János AU - Török, Kálmán AU - Király, Edit AU - Karátson, Dávid AU - Fancsik, Tamás AU - Biró, Tamás AU - Pálos, Zsófia AU - Aradi, László Előd AU - Patkó, Levente AU - Liptai, Nóra AU - Falus, György AU - Károly, Hidas AU - Wesztergom, Viktor AU - Szabó, Csaba TI - A new conceptual model for the genesis of Plio-Pleistocene alkaline basalts in the Pannonian Basin JF - GEOPHYSICAL RESEARCH ABSTRACTS J2 - GEOPHYS RES ABSTR VL - 20 PY - 2018 SN - 1029-7006 UR - https://m2.mtmt.hu/api/publication/3362543 ID - 3362543 LA - English DB - MTMT ER - TY - JOUR AU - Aradi, László Előd AU - Hidas, K AU - Kovács, István János AU - Tommasi, A AU - Klébesz, Rita AU - Garrido, CJ AU - Szabó, Csaba TI - Fluid-Enhanced Annealing in the Subcontinental Lithospheric Mantle Beneath the Westernmost Margin of the Carpathian-Pannonian Extensional Basin System JF - TECTONICS J2 - TECTONICS VL - 36 PY - 2017 IS - 12 SP - 2987 EP - 3011 PG - 25 SN - 0278-7407 DO - 10.1002/2017TC004702 UR - https://m2.mtmt.hu/api/publication/3323242 ID - 3323242 N1 - Lithosphere Fluid Research Laboratory, Eötvös Loránd University, Budapest, Hungary Instituto Andaluz de Ciencias de la Tierra, CSIC and UGR, Granada, Spain Geological and Geophysical Institute of Hungary, Budapest, Hungary Now at Geodetic and Geophysical Institute, MTA Research Centre for Astronomy and Earth Sciences, Sopron, Hungary Géosciences Montpellier, Université de Montpellier and CNRS, Montpellier, France Geodetic and Geophysical Institute, MTA Research Centre for Astronomy and Earth Sciences, Sopron, Hungary Cited By :18 Export Date: 8 December 2022 Correspondence Address: Szabó, C.; Lithosphere Fluid Research Laboratory, Hungary; email: cszabo@elte.hu AB - Mantle xenoliths from the Styrian Basin Volcanic Field (Western Pannonian Basin, Austria) are mostly coarse granular amphibole-bearing spinel lherzolites with microstructures attesting for extensive annealing. Olivine and pyroxene CPO (crystal-preferred orientation) preserve nevertheless the record of coeval deformation during a preannealing tectonic event. Olivine shows transitional CPO symmetry from [010]-fiber to orthogonal type. In most samples with [010]-fiber olivine CPO symmetry, the [001] axes of the pyroxenes are also dispersed in the foliation plane. This CPO patterns are consistent with lithospheric deformation accommodated by dislocation creep in a transpressional tectonic regime. The lithospheric mantle deformed most probably during the transpressional phase after the Penninic slab breakoff in the Eastern Alps. The calculated seismic properties of the xenoliths indicate that a significant portion of shear wave splitting delay times in the Styrian Basin (0.5 s out of approximately 1.3 s) may originate in a highly annealed subcontinental lithospheric mantle. Hydroxyl content in olivine is correlated to the degree of annealing, with higher concentrations in the more annealed textures. Based on the correlation between microstructures and hydroxyl content in olivine, we propose that annealing was triggered by percolation of hydrous fluids/melts in the shallow subcontinental lithospheric mantle. A possible source of these fluids/melts is the dehydration of the subducted Penninic slab beneath the Styrian Basin. The studied xenoliths did not record the latest large-scale geodynamic events in the region-the Miocene extension then tectonic inversion of the Pannonian Basin. ©2017. American Geophysical Union. LA - English DB - MTMT ER - TY - JOUR AU - Liptai, Nóra AU - Patkó, Levente AU - Kovács, István János AU - Hidas, K AU - Pinter, Z AU - Jeffries, T AU - Zajacz, Z AU - O'Reilly, SY AU - Griffin, WL AU - Pearson, NJ AU - Szabó, Csaba TI - Multiple Metasomatism beneath the Nograd-Gomor Volcanic Field (Northern Pannonian Basin) Revealed by Upper Mantle Peridotite Xenoliths JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 58 PY - 2017 IS - 6 SP - 1107 EP - 1144 PG - 38 SN - 0022-3530 DO - 10.1093/petrology/egx048 UR - https://m2.mtmt.hu/api/publication/3288117 ID - 3288117 N1 - Lithosphere Fluid Research Lab, Institute of Geography and Earth Sciences, Eötvös University, Budapest, H-1117, Hungary Australian Research Council Centre of Excellence for Core to Crust Fluid Systems (CCFS) and GEMOC, Department of Earth and Planetary Sciences, Macquarie University, North Ryde, NSW 2109, Australia Hungarian Geological and Geophysical Institute, Budapest, H-1143, Hungary Instituto Andaluz de Ciencias de la Tierra, CSIC and UGR, Avenida de las Palmeras 4, Armilla (Granada), E-18100, Spain Department of Earth Science, The Natural History Museum, London, SW7 5BD, United Kingdom Department of Earth Sciences, Institute of Isotope Geochemistry and Mineral Resources, ETH Zürich, Zürich, 8092, Switzerland Geodetic and Geophysical Institute, MTA Research Centre for Astronomy and Earth Sciences, Sopron, H-9400, Hungary Australian Research Council Centre of Excellence for Core to Crust Fluid Systems (CCFS) and GEMOC, Department of Earth and Planetary Sciences, Macquarie University, North Ryde, NSW 2109, Australia Department of Earth Sciences, University of Toronto, Toronto, ON M5S 3B1, Canada Cited By :19 Export Date: 1 July 2022 Correspondence Address: Szabó, C.; Lithosphere Fluid Research Lab, Hungary; email: cszabo@elte.hu LA - English DB - MTMT ER - TY - JOUR AU - Qun-Ke, Xia AU - Jia, Liu AU - Kovács, István János AU - Yan-Tao, Hao AU - Pei, Li AU - Xiao-Zhi, Yang AU - Huan, Chen AU - Yin-Min, Sheng TI - Water in the upper mantle and deep crust of eastern China: Concentration, distribution and implications JF - NATIONAL SCIENCE REVIEW J2 - NATL SCI REV VL - 6 PY - 2017 IS - 1 SP - 125 EP - 144 PG - 20 SN - 2095-5138 DO - 10.1093/nsr/nwx016 UR - https://m2.mtmt.hu/api/publication/3193611 ID - 3193611 N1 - WoS:hiba:000462696500025 2020-08-31 00:35 év nem egyezik LA - English DB - MTMT ER - TY - JOUR AU - Biró, Tamás AU - Kovács, István János AU - Király, Edit AU - Falus, György AU - Karátson, Dávid AU - Bendő, Zsolt AU - Fancsik, Tamás AU - Sándorné, JK TI - Concentration of hydroxyl defects in quartz from various rhyolitic ignimbrite horizons: Results from unpolarized micro-FTIR analyses on unoriented phenocryst fragments JF - EUROPEAN JOURNAL OF MINERALOGY J2 - EUR J MINERAL VL - 28 PY - 2016 IS - 2 SP - 313 EP - 327 PG - 15 SN - 0935-1221 DO - 10.1127/ejm/2016/0028-2515 UR - https://m2.mtmt.hu/api/publication/3014151 ID - 3014151 N1 - AB - Hydroxyl defect concentrations of quartz phenocryst fragments from various rhyolitic pyroclastic density current deposits from the Bükk Foreland Volcanic Area, Hungary, were determined by using micro-FTIR spectrometry. In addition trace-element analysis and SEM cathodoluminescence imaging were performed on the same crystals. Hydroxyl defect-content (expressed in water equivalent) of volcanic quartz ranges from 0.9± 0.1 to 2.8 ± 0.4 wt. ppm, which is lower than those in quartz of plutonic (granitic), metamorphic and hydrothermal origin. The incorporation of hydroxyl defect is mainly due to H++ Al3+ substitutions into Si-tetrahedral vacancies of quartz. Furthermore, the presence of molecular water probably in (nano-)inclusions was proven. The post-eruptive diffusive loss of hydroxyl defects during cooling seems to be the main factor causing the very low concentration of hydroxyl defects. This may be also manifested in the almost homogeneous distribution of hydroxyl defects regardless of the considerable zonation in Al-content, although complete diffusive loss of hydroxyl defects was possibly hindered by the cooling effect of phreatomagmatism (interaction of excess water with magma during eruption) and deposition in a shallow submarine environment. Moreover, a reasonable linear correlation is observed between the integrated area of Si–O bands (between 2110 and 1440 cm1) and sample thickness up to ~300μm by studying unoriented quartz phenocryst fragments. This may enable the quantitative analysis of hydroxyl defects in separated quartz crystals without the need for preparing oriented thin sections. LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs AU - Jankovics, M. Éva AU - Sági, Tamás AU - Kiss, Balázs AU - Haranginé Lukács, Réka AU - Soós, Ildikó TI - Origin and geodynamic relationships of the Late Miocene to Quaternary alkaline basalt volcanism in the Pannonian basin, eastern–central Europe JF - INTERNATIONAL JOURNAL OF EARTH SCIENCES J2 - INT J EARTH SCI VL - 104 PY - 2015 IS - 8 SP - 2007 EP - 2032 PG - 26 SN - 1437-3254 DO - 10.1007/s00531-014-1105-7 UR - https://m2.mtmt.hu/api/publication/2794064 ID - 2794064 LA - English DB - MTMT ER - TY - JOUR AU - Klébesz, Rita AU - Gráczer, Zoltán AU - Szanyi, Gyöngyvér AU - Liptai, Nóra AU - Kovács, István János AU - Patkó, Levente AU - Pintér, Zs AU - Falus, György AU - Wesztergom, Viktor AU - Szabó, Csaba TI - Constraints on the thickness and seismic properties of the lithosphere in an extensional setting (Nógrád-Gömör Volcanic Field, Northern Pannonian Basin) JF - ACTA GEODAETICA ET GEOPHYSICA J2 - ACTA GEOD GEOPHYS VL - 50 PY - 2015 IS - 2 SP - 133 EP - 149 PG - 17 SN - 2213-5812 DO - 10.1007/s40328-014-0094-0 UR - https://m2.mtmt.hu/api/publication/2822202 ID - 2822202 N1 - Megjegyzés-25439761 N1 Funding Details: NAMS-230937, NAMS, The North American Menopause Society Megjegyzés-26505602 N1 Funding details: NAMS-230937, NAMS, The North American Menopause Society LA - English DB - MTMT ER - TY - JOUR AU - Pintér, Z AU - Patkó, Levente AU - Tene, Djoukam JF AU - Kovács, István János AU - Tchouankoue, JP AU - Falus, György AU - Konc, Z AU - Tommasi, A AU - Barou, F AU - Mihály, Judith AU - Németh, Csaba AU - Jeffries, T TI - Characterization of the sub-continental lithospheric mantle beneath the Cameroon volcanic line inferred from alkaline basalt hosted peridotite xenoliths from Barombi Mbo and Nyos Lakes JF - JOURNAL OF AFRICAN EARTH SCIENCES J2 - J AFR EARTH SCI VL - 111 PY - 2015 SP - 170 EP - 193 PG - 24 SN - 1464-343X DO - 10.1016/j.jafrearsci.2015.07.006 UR - https://m2.mtmt.hu/api/publication/2932134 ID - 2932134 N1 - Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, 95440, Germany Lithosphere Fluid Research Lab, Institute of Geography and Earth Sciences, Eötvös University, Budapest, Pázmány Péter s. 1/C, Budapest, H-1117, Hungary Department of Earth Sciences, University of Yaoundé I, Yaoundé, Cameroon Geochemical and Laboratory Department, Geological and Geophysical Institute of Hungary, Stefánia Street 14, Budapest, H-1143, Hungary Laboratoire et Volcans, UBP-CNRS:IRD, Clemont-Ferrand, France Geosciences Montpellier, CNRS, Université de Montpellier, Montpellier, France Research Centre for Natural Sciences of the Hungarian Academy of Science, Budapest, Hungary Department of Earth Science, The Natural History Museum, Cromwell Road, London, SW7 5BD, United Kingdom Cited By :25 Export Date: 10 January 2023 Correspondence Address: Kovács, I.; Geochemical and Laboratory Department, Stefánia Street 14, Hungary; email: kovacs.istvan.janos@mfgi.hu AB - We carried out detailed petrographic, major and trace element geochemical, microstructural and FTIR analyses on eight characteristic ultramafic xenoliths from Nyos and Barombi Mbo Lakes in the continental sector of the Cameroon Volcanic Line (CVL). The studied xenoliths are spinel lherzolites showing lithologies similar to the other xenoliths reported previously along the CVL. They have protogranular and porphyroclastic textures. One of the Barombi xenolith contains amphibole, which had not been previously reported in this locality. Amphibole is common in the Nyos xenoliths suite. Peridotite xenoliths from both localities show some chemical heterogeneity, but Barombi xenoliths generally are less depleted in basaltic elements with respect to Nyos xenoliths. Trace element compositions of Nyos spinel lherzolites show a moderately depleted initial (premetasomatic) composition and variable enrichment in REE. Evidence for both modal and cryptic metasomatism is present in Nyos xenoliths. Rare earth element patterns of clinopyroxene suggest that interaction between mafic melts and the upper mantle occurred beneath the Nyos locality. Barombi Mbo xenoliths, on the other hand, record a small degree of partial melting. The Barombi Mbo xenoliths have weak, dominantly orthorhombic olivine crystal preferred orientations, whereas Nyos ones have strong axial-[010] patterns, which may have formed in response to transpression. Nominally anhydrous mantle minerals (NAMs) of the Barombi Mbo xenoliths show generally higher bulk concentrations of 'water' (70-127 ppm) than Nyos xenoliths (32-81 ppm). The Barombi Mbo xenoliths could originate from a juvenile segment of the lithospheric mantle, which had been originally part of the asthenosphere. It became a part of the lithosphere in response to thermal relaxation following the extension, forming a weakly deformed lower lithospheric mantle region along the CVL. The Nyos xenoliths, however, represent a shallow lithospheric mantle bearing imprints of several depletion and enrichment events probably prior or following the extension (at ~30 Ma). © 2015. LA - English DB - MTMT ER - TY - CONF AU - Novák, Attila AU - Klébesz, Rita AU - Szabó, Cs AU - Wesztergom, Viktor AU - Patkó, Levente AU - Liptai, Nóra AU - Ádám, Antal AU - Semenov, V Y AU - Lemperger, István AU - Kis, Árpád AU - Gribovszki, Katalin Eszter TI - Combined geophysical (magnetotellurics) and geochemical results for determination of the Lithosphere-Asthenosphere Boundary (LAB) beneath the Nógrád-Gömör Volcanic Field T2 - 22 nd EM Induction Workshop PY - 2014 PG - 4 UR - https://m2.mtmt.hu/api/publication/2786083 ID - 2786083 LA - English DB - MTMT ER - TY - JOUR AU - Magyar, Imre AU - Radivojević, D AU - Sztanó, Orsolya AU - Synak, R AU - Ujszászi, K AU - Pócsik, M TI - Progradation of the paleo-Danube shelf margin across the Pannonian Basin during the Late Miocene and Early Pliocene JF - GLOBAL AND PLANETARY CHANGE J2 - GLOBAL PLANET CHANGE VL - 103 PY - 2013 IS - 1 SP - 168 EP - 173 PG - 6 SN - 0921-8181 DO - 10.1016/j.gloplacha.2012.06.007 UR - https://m2.mtmt.hu/api/publication/2154674 ID - 2154674 N1 - MOL Hungarian Oil and Gas Plc., Október 23. u. 18., H-1117 Budapest, Hungary Research Group for Paleontology, Hungarian Academy of Sciences, Hungarian Natural History Museum-Eötvös University, POB 137, H-1431 Budapest, Hungary NIS Gazprom Neft, Narodnog fronta 12, 21000 Novi Sad, Serbia Eötvös Loránd University, Pázmány Péter sétany 1/c, H-1117 Budapest, Hungary Comenius University, Mlynská dolina, 84215 Bratislava, Slovakia Cited By :100 Export Date: 27 November 2019 CODEN: GPCHE Correspondence Address: Magyar, I.; MOL Hungarian Oil and Gas Plc., Október 23. u. 18., H-1117 Budapest, Hungary; email: immagyar@mol.hu AB - The basin of giant Lake Pannon in Central Europe was filled by forward accretion of sediment packages during the Late Miocene and Early Pliocene. Successive positions of the shelf-margin are represented by a series of clinoforms in seismic profiles. The height of the clinoforms (and thus the inferred paleo water depth) is 200-600 m in the successions; the width of the slope, measured from the shelf-break down to the toe of slope, varies between 5 and 15 km. Geographical position of successive shelf-margin slopes indicates that about 2/3 of the basin area was filled by sediment transport systems supplying sediments from the NW, from the Alps and Western Carpathians. The first shelf-margin slope was built by the paleo-Danube in the Kisalföld/Danube sub-basin about 10 Ma ago, and during the subsequent 6 Ma it prograded ca. 400 km to the SE across the Pannonian Basin, with an average of 67 km/Ma slope advance. The most significant agent of this shelf growth was the sediment dispersal system of the paleo-Danube, hence we designate this northwestern shelf the paleo-Danube shelf. The northeastern part of Lake Pannon was filled by the paleo-Tisza system, supplying sediments from the Northeastern and Eastern Carpathians. Additional local systems carried sediments from E to W along the eastern margin and S to N along the southern margin of the Pannonian Basin, respectively. The deep-water environment disappeared from the Pannonian Basin and the endemic, brackish biota of Lake Pannon went extinct probably 4 Ma ago, when the paleo-Danube shelf margin and a (yet unidentified) shelf margin prograding in the opposite direction met in the southeastern corner of the Pannonian Basin. © 2012 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - CONF AU - Patkó, Levente AU - Aradi, László Előd AU - Liptai, Nóra AU - Bodnar, R J AU - Fedele, L AU - Kovács, Zoltán AU - Cesare, B AU - Vaselli, O AU - Fioretti, A M AU - Jeffries, T AU - Szabó, Cs TI - Wehrlitization processes within the upper mantle beneath the Northern Pannonian basin (Hungary). T2 - 2013 Goldschmidt Conference C1 - Florence PY - 2013 SP - 1934 EP - 1934 PG - 1 UR - https://m2.mtmt.hu/api/publication/3119686 ID - 3119686 LA - English DB - MTMT ER - TY - JOUR AU - Xia, Q AU - Liu, J AU - Liu, S C AU - Kovács, István János AU - Feng, M AU - Dang, L TI - High water content in Mesozoic primitive basalts of the North China Craton and implications for the destruction of cratonic mantle lithosphere. JF - EARTH AND PLANETARY SCIENCE LETTERS J2 - EARTH PLANET SC LETT VL - 361 PY - 2013 SP - 85 EP - 97 PG - 13 SN - 0012-821X DO - 10.1016/j.epsl.2012.11.024 UR - https://m2.mtmt.hu/api/publication/2820653 ID - 2820653 LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Green, H D AU - Rosenthal, A AU - Hermann, J AU - O’Neill, H St C AU - Hibberson, W O AU - Udvardi, Beatrix TI - An experimental study of water in nominally anhydrous minerals in the upper mantle near the water-saturated solidus JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 53 PY - 2012 IS - 10 SP - 2067 EP - 2093 PG - 27 SN - 0022-3530 DO - 10.1093/petrology/egs044 UR - https://m2.mtmt.hu/api/publication/2202613 ID - 2202613 LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Falus, György AU - Stuart, G AU - Hidas, K AU - Szabó, Csaba AU - Flower, MFJ AU - Hegedűs, Endre AU - Posgay, Károly AU - Zilahi-Sebess, László József TI - Seismic anisotropy and deformation patterns in upper mantle xenoliths from the central Carpathian-Pannonian region: Asthenospheric flow as a driving force for Cenozoic extension and extrusion? JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 514-517 PY - 2012 SP - 168 EP - 179 PG - 12 SN - 0040-1951 DO - 10.1016/j.tecto.2011.10.022 UR - https://m2.mtmt.hu/api/publication/1887382 ID - 1887382 N1 - Megjegyzés-22032626 WC: Geochemistry & Geophysics Megjegyzés-23192421 : Equipment Facility, NERC/G-5260-2010 Megjegyzés-23331080 : Equipment Facility, NERC/G-5260-2010 AB - We review deformation fabrics in mantle xenoliths from the central part of the Carpathian-Pannonian Region (CPR) and, in combination with seismic shear wave splitting data, attempt to define patterns of upper mantle anisotropy. Our interpretations from both lines of evidence support a model for east-west oriented asthenospheric flow, decoupled (at least in part) from the overlying lithosphere. Mantle flow fields resulting from Tertiary indentation of Europe by the Adria micro-plate and the resulting Alpine orogen may thus have been an important factor in driving the eastward extrusion of lithospheric blocks in the CPR accompanied by lithospheric extension, rapid 'rollback' of the Carpathian subduction system, and its diachronous collision with the European craton. According to this model, eastward asthenospheric flow would add significantly to the effects of slab rollback and gravitational instability. Thus, opening of the Pannonian Basin, rather than being exclusively driven by 'slab pull' and gravitational instability, could have been resulted, at least in part, from mantle flow associated with the Adria-European collision and ensuing Alpine orogeny. Such models have also been proposed for analogous geodynamic scenarios such as the western and eastern Mediterranean, and western and southwestern Pacific regions, offering a potential generic model for backarc basin opening. (C) 2011 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Green, DH AU - Hibberson, WO AU - Kovács, István János AU - Rosenthal, A TI - Water and its influence on the lithosphere-asthenosphere boundary JF - NATURE J2 - NATURE VL - 467 PY - 2010 IS - 7314 SP - 448 EP - 451 PG - 4 SN - 0028-0836 DO - 10.1038/nature09369 UR - https://m2.mtmt.hu/api/publication/1887375 ID - 1887375 AB - The Earth has distinctive convective behaviour, described by the plate tectonics model, in which lateral motion of the oceanic lithosphere of basaltic crust and peridotitic uppermost mantle is decoupled from the underlying mechanically weaker upper mantle (asthenosphere). The reason for differentiation at the lithosphere-asthenosphere boundary is currently being debated with relevant observations from geophysics (including seismology) and geo-chemistry (including experimental petrology). Water is thought to have an important effect on mantle rheology, either by weakening the crystal structure of olivine and pyroxenes by dilute solid solution(1), or by causing low-temperature partial melting(2). Here we present a novel experimental approach to clarify the role of water in the uppermost mantle at pressures up to 6 GPa, equivalent to a depth of 190 km. We found that for lherzolite in which a water-rich vapour is present, the temperature at which a silicate melt first appears (the vapour-saturated solidus) increases from a minimum of 970 degrees C at 1.5 GPa to 1,350 degrees C at 6 GPa. We have measured the water content in lherzolite to be approximately 180 parts per million, retained in nominally anhydrous minerals at 2.5 and 4 GPa at temperatures above and below the vapour-saturated solidus. The hydrous mineral pargasite is the main water-storage site in the uppermost mantle, and the instability of pargasite at pressures greater than 3 GPa (equivalent to more than about 90 km depth) causes a sharp drop in both the water-storage capacity and the solidus temperature of fertile upper-mantle lherzolite. The presence of interstitial melt in mantle with more than 180 parts per million of water at pressures greater than 3 GPa alters mantle rheology and defines the lithosphere-asthenosphere boundary. Modern asthenospheric mantle acting as the source for mid-oceanic ridge basalts has a water content of 50-200 parts per million (refs 3-5). We show that this matches the water content of residual nominally anhydrous minerals after incipient melting of lherzolite at the vapour-saturated solidus at high pressure. LA - English DB - MTMT ER - TY - JOUR AU - Hidas, Károly János AU - Guzmics, Tibor AU - Szabó, Csaba AU - Kovács, István János AU - Bodnar, RJ AU - Zajacz, Zoltán AU - Nédli, Zsuzsanna AU - Vaccari, L AU - Perucchi, A TI - Coexisting silicate melt inclusions and H2O-bearing, CO2-rich fluid inclusions in mantle peridotite xenoliths from the Carpathian-Pannonian region (central Hungary) JF - CHEMICAL GEOLOGY J2 - CHEM GEOL VL - 274 PY - 2010 IS - 1-2 SP - 1 EP - 18 PG - 18 SN - 0009-2541 DO - 10.1016/j.chemgeo.2010.03.004 UR - https://m2.mtmt.hu/api/publication/1615233 ID - 1615233 N1 - Megjegyzés-22471102 : 2O-bearing, CO : 2-rich fluid inclusions in mantle peridotite xenoliths from the Carpathian-Pannonian region (central Hungary) Megjegyzés-22479235 : 2O-bearing, CO : 2-rich fluid inclusions in mantle peridotite xenoliths from the Carpathian-Pannonian region (central Hungary) Megjegyzés-25717574 Megjegyzés-21064765 FU: Hungarian Scientific Research Fund [T043686]; ELETTRA Proposal : [2008406]; Spanish-Hungarian Bilateral Science and Technology : Foundation [ESP-8/2006]; Hungarian Development Bank Plc. (MFB, Hungary) : ; U.S. National Science Foundation [EAR-0711333] FX: This work was supported by the Hungarian Scientific Research Fund : [Grant No. T043686]; ELETTRA Proposal [Grant No. 2008406]; : Spanish-Hungarian Bilateral Science and Technology Foundation [Grant : No. ESP-8/2006] to C. Szabo and the Habilitas program of the Hungarian : Development Bank Plc. (MFB, Hungary) to T. Guzmics and K. Hidas. : Funding for work done at Virginia Tech was supported by the U.S. : National Science Foundation [Grant No. EAR-0711333]. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - O’Neill, H St C AU - Hermann, J AU - Hauri, E TI - Site-specific infrared O-H absorption coefficients for water substitution into olivine JF - AMERICAN MINERALOGIST J2 - AM MINERAL VL - 95 PY - 2010 SP - 292 EP - 299 PG - 8 SN - 0003-004X DO - 10.2138/am.2010.3313 UR - https://m2.mtmt.hu/api/publication/2820621 ID - 2820621 AB - There are four ways by which OH− commonly substitutes into olivine, namely those associated with (1) Si vacancies, (2) Mg vacancies, (3) Ti, or (4) trivalent cations. The four mechanisms, which we label [Si], [Mg], [Ti], and [triv], respectively, may each be fingerprinted by their characteristic O-H stretching modes in the infrared spectrum. We show by comparing the integrated intensities of these characteristic infrared peaks against total water content analyzed by secondary ion mass spectrometry, obtained for a suite of synthetic olivines plus one natural olivine, that the different substitution mechanisms require different absorption coefficients (k). For [Ti], we find k = 0.18 ± 0.07, identical to the value previously obtained from natural olivines in which the water was mainly associated with [Ti] defects. Values of k for [Si] and [triv] are 0.57 ± 0.04 and 0.18 ± 0.05, respectively; that for [Mg] is too small to be accurately determined (0.03 ± 0.03). The values of k for [Ti] and [Si] defects differ by a factor of three even though their average wavenumbers are virtually the same. The [Ti] and [triv] defects, on the other hand, have very similar absorption coefficients at significantly different wavenumbers. This highlights the inadequacy of using wavenumber-dependent calibrations for olivine and presumably for NAMs in general. Different substitution mechanisms have their own crystallographic environments that determine their absorption coefficients. The large variation in absorption coefficients within a single mineral emphasizes the importance of distinguishing the substitution mechanism if meaningful quantitative results are to be obtained from infrared spectroscopy. LA - English DB - MTMT ER - TY - JOUR AU - Lexa, J AU - Seghedi, I AU - Németh, Károly AU - Szakács, A AU - Konečný, V AU - Pécskay, Zoltán AU - Fülöp, A AU - Kovacs, M TI - Neogene-quaternary volcanic forms in the Carpathian-Pannonian region: A review JF - CENTRAL EUROPEAN JOURNAL OF GEOSCIENCES J2 - CENT EUR J GEOSCI VL - 2 PY - 2010 IS - 3 SP - 207 EP - 270 PG - 64 SN - 2081-9900 DO - 10.2478/v10085-010-0024-5 UR - https://m2.mtmt.hu/api/publication/1384579 ID - 1384579 N1 - P22962 ATKI2010/0013 Admin megjegyzés-22683776 In Press dokumentumra hivatkozik Geological Institute, Slovak Academy of Sciences, Bratislava, Slovakia Institute of Geodynamics, Romanian Academy, Bucharest, Romania Volcanic Risk Solutions CS-INR, Massey University, Palmerston North, New Zealand Dept. of Environmental Sciences, Sapientia University, Cluj-Napoca, Romania State Geological Institute of D. Átúr, Bratislava, Slovakia Institute of Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary Faculty of Mineral Resources, North University, Baia Mare, Romania Cited By :65 Export Date: 21 June 2021 Correspondence Address: Lexa, J.; Geological Institute, , Bratislava, Slovakia Funding details: Hungarian Scientific Research Fund, OTKA, K 68153 Funding details: Vedecká Grantová Agentúra MŠVVaŠ SR a SAV, VEGA, 2/0171/08 Funding text 1: This paper is to be presented in the XIX Congress of the Carpathian Balkan Geological Association in Thessaloniki on September 23–26, 2010. To attend the XIX CBGA congress, JL was invited by the Organizing Committee of the Congress, KN was supported by the Massey University Leave & Ancillary Appointments Committee granted fund (LAAC10/37). IS thanks the Institute of Geodynamics, Romanian Academy and the Organizing Committee of the Congress for support. ZP acknowledge the financial support provided by the Hungarian national Scientific Fund (OTKA No. K 68153). JL acknowledges support of the VEGA grant 2/0171/08. Constructive comments by anonymous journal reviewers and Managing Editor, Katarzyna Cyran helped to improve the quality of the manuscript. Funding Agency and Grant Number: Massey University Leave & Ancillary Appointments Committee granted fund [LAAC10/37]; Institute of Geodynamics, Romanian Academy; Organizing Committee of the Congress; Hungarian national Scientific Fund (OTKA)Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [K 68153]; VEGAVedecka grantova agentura MSVVaS SR a SAV (VEGA)European Commission [2/0171/08] Funding text: This paper is to be presented in the XIX Congress of the Carpathian Balkan Geological Association in Thessaloniki on September 23-26, 2010. To attend the XIX CBGA congress, JL was invited by the Organizing Committee of the Congress, KN was supported by the Massey University Leave & Ancillary Appointments Committee granted fund (LAAC10/37). IS thanks the Institute of Geodynamics, Romanian Academy and the Organizing Committee of the Congress for support. ZP acknowledge the financial support provided by the Hungarian national Scientific Fund (OTKA No. K 68153). JL acknowledges support of the VEGA grant 2/0171/08. Constructive comments by anonymous journal reviewers and Managing Editor, Katarzyna Cyran helped to improve the quality of the manuscript. AB - Neogene to Quaternary volcanic/magmatic activity in the Carpathian-Pannonian Region (CPR) occurred between 21 and 0.1 Ma with a distinct migration in time from west to east. It shows a diverse compositional variation in response to a complex interplay of subduction with roll-back, back-arc extension, collision, slab break-off, delamination, strike-slip tectonics and microplate rotations, as well as in response to further evolution of magmas in the crustal environment by processes of differentiation, crustal contamination, anatexis and magma mixing. Since most of the primary volcanic forms have been affected by erosion, especially in areas of post-volcanic uplift, based on the level of erosion we distinguish: (1) areas eroded to the basement level, where paleovolcanic reconstruction is not possible; (2) deeply eroded volcanic forms with secondary morphology and possible paleovolcanic reconstruction; (3) eroded volcanic forms with remnants of original morphology preserved; and (4) the least eroded volcanic forms with original morphology quite well preserved. The large variety of volcanic forms present in the area can be grouped in a) monogenetic volcanoes and b) polygenetic volcanoes and their subsurface/intrusive counterparts that belong to various rock series found in the CPR such as calc-alkaline magmatic rock-types (felsic, intermediate and mafic varieties) and alkalic types including K-alkalic, shoshonitic, ultrapotassic and Na-alkalic. The following volcanic/subvolcanic forms have been identified: (i) domes, shield volcanoes, effusive cones, pyroclastic cones, stratovolcanoes and calderas with associated intrusive bodies for intermediate and basic calc-alkaline volcanism; (ii) domes, calderas and ignimbrite/ash-flow fields for felsic calc-alkaline volcanism and (iii) dome flows, shield volcanoes, maars, tuffcone/tuff-rings, scoria-cones with or without related lava flow/field and their erosional or subsurface forms (necks/ plugs, dykes, shallow intrusions, diatreme, lava lake) for various types of K- and Na-alkalic and ultrapotassic magmatism. Finally, we provide a summary of the eruptive history and distribution of volcanic forms in the CPR using several sub-region schemes. LA - English DB - MTMT ER - TY - JOUR AU - Berkesi, Márta AU - Hidas, Károly János AU - Guzmics, Tibor AU - Dubessy, J AU - Bodnar, R J AU - Szabó, Csaba AU - Vajna, B AU - Tsunogae, T TI - Detection of small amounts of H2O in CO2-rich fluid inclusions using Raman spectroscopy JF - JOURNAL OF RAMAN SPECTROSCOPY J2 - J RAMAN SPECTROSC VL - 40 PY - 2009 IS - 11 SP - 1461 EP - 1463 PG - 3 SN - 0377-0486 DO - 10.1002/jrs.2440 UR - https://m2.mtmt.hu/api/publication/1372462 ID - 1372462 AB - Raman spectroscopic analysis at low (−100 ◦C) or high (100–200 ◦C) temperature is shown to be effective for detecting small amounts of H2O in CO2-rich fluid inclusions from the deep lithosphere, which have previously been thought to be water-free. LA - English DB - MTMT ER - TY - JOUR AU - Aizawa, Y AU - Barnhoorn, A AU - Faul, UH AU - Fitz, Gerald JD AU - Jackson, I AU - Kovács, István János TI - Seismic properties of anita bay dunite: An exploratory study of the influence of water JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 49 PY - 2008 IS - 4 SP - 841 EP - 855 PG - 15 SN - 0022-3530 DO - 10.1093/petrology/egn007 UR - https://m2.mtmt.hu/api/publication/1887373 ID - 1887373 AB - As a pilot study of the role of water in the attenuation of seismic waves in the Earth's upper mantle, we have performed a series of seismic-frequency torsional forced-oscillation experiments on a natural ( Anita Bay) dunite containing accessory hydrous phases, at high temperatures to 1300 degrees C and confining pressure ( P-c) of 200 MPa, within a gas-medium high-pressure apparatus. Both oven-dried and pre-fired specimens wrapped in Ni-Fe foil within the ( poorly) vented assembly were recovered essentially dry after 50-100 h of annealing at 1300 degrees C followed by slow staged cooling. The results for those specimens indicate broadly similar absorption-band viscoelastic behaviour, but with systematic differences in the frequency dependence of strain-energy dissipation Q(-1), attributed to differences in the small volume fraction of silicate melt and its spatial distribution. In contrast, it has been demonstrated that a new assembly involving a welded Pt capsule retains aqueous fluid during prolonged exposure to high temperatures allowing the first high-temperature torsional forced-oscillation measurements under high aqueous fluid pore pressure P-f. At temperatures>1000 degrees C, a marked reduction in shear modulus, without concomitant increase in Q(-1), is attributed to the widespread wetting of grain boundaries resulting from grain-scale hydrofracturing and the maintenance of conditions of low differential pressure P-d=P-c-P-f. Staged cooling from 1000 degrees C is accompanied by decreasing Pf and progressive restoration of significantly positive differential pressure resulting in a microstructural regime in which the fluid on grain boundaries is increasingly restricted to arrays of pores. The more pronounced viscoelastic behaviour observed within this regime for the Pt-encapsulated specimen compared with the essentially dry specimens may reflect both water-enhanced solid-state relaxation and the direct influence of the fluid phase. The scenario of overpressurized fluids and hydrofracturing in the Pt-encapsulated dunite specimen may have some relevance to the high Q(-1) and low-velocity zones observed in subduction-zone environments. The outcomes of this exploratory study indicate that the presence of water can have a significant effect on the seismic wave attenuation in the upper mantle and provide the foundation for more detailed studies on the role of water. LA - English DB - MTMT ER - TY - JOUR AU - Falus, György AU - Tommasi, A AU - Ingrin, J AU - Szabó, Csaba TI - Deformation and seismic anisotropy of the lithospheric mantle in the southeastern Carpathians inferred from the study of mantle xenoliths JF - EARTH AND PLANETARY SCIENCE LETTERS J2 - EARTH PLANET SC LETT VL - 272 PY - 2008 IS - 1-2 SP - 50 EP - 64 PG - 15 SN - 0012-821X DO - 10.1016/j.epsl.2008.04.035 UR - https://m2.mtmt.hu/api/publication/2269135 ID - 2269135 N1 - Megjegyzés-20761805 FU: Institut National des Sciences de l'Univers (CNRS/INSU, France) program : 'Structure, Evolution et Dynamique de l'lnterieur de la Terre ; Bolyai : Fellowship Program ; National Research Fund [OTKA F 67917] FX: Anne-Marie Boullier and ail anonymous reviewer constructive comments : helped to improve the manuscript. We also thank the Lithosphere Fluid : Research Lab for access to their mantle xenolith collection and sample : preparation, D. Mainprice for providing the softwares used for data : plotting and seismic anisotropy calculation, C. Nevado for the high : quality polished thin sections for EBSD measurements, and B. Boyer for : help with electron microprobe analyses. The postdoctoral research : fellowship of G. Falus in Monpellier was funded by the Ministere de : l'Enseignement Superieur et de la Recherche (France). This study was : funded by the Institut National des Sciences de l'Univers (CNRS/INSU, : France) program 'Structure, Evolution et Dynamique de l'lnterieur de la : Terre'. We acknowledge the Bolyai Fellowship Program and the National : Research Fund (OTKA F 67917 - G. Falus) for partially financing G. : Falus. AB - Peridotite xenoliths with a broad range of textures provides evidence for consistent microstructural evolution in a vertical transect of the shallow lithospheric mantle (35-55 km depth) beneath the Persani Mountains, SE Carpathians, Romania, due to Ongoing plate convergence in the Carpathian Arc nearby. The recrystallized grain size, crystal preferred orientations Strength, and resulting seismic anisotropy vary Continuously and display a Strong correlation to equilibrium temperatures, suggesting a continuous change in deformation conditions with depth. The shallowmost xenoliths have microstructures typical of high stress deformation, marked by strong recrystallization to fine grain sizes, which results in weak crystal preferred orientations and anisotropy. The deepest xenoliths have coarse-grained porphyroclastic microstructures and strong crystal preferred orientations. Replacive orthopyroxene structures, consuming olivine, and high H(2)O concentrations in the pyroxenes are observed in some xenoliths indicating limited percolation of fluids or volatile-rich melts. Despite the high stress deformation and high H(2)O contents in some of the studied xenoliths, analysis of olivine crystallographic orientations indicates that 11001 slip systems rather than "wet", [001] accommodate most of the deformation in all samples. Seismic anisotropy estimated from the measured olivine and pyroxene crystal preferred orientations suggests that the strike-parallel fast SKS polarization directions and similar to 1 s delay times measured in the SE Carpathians are likely the consequence of convergence-driven belt-parallel flow in the lithospheric mantle. (C) 2008 Elsevier B.V. All Fights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Hermann, J AU - O'Neill, H S AU - Fitz, Gerald J AU - Sambridge, M AU - Horváth, Gábor TI - Quantitative absorbance spectroscopy with unpolarized light, Part II. Experimental evaluation and development of a protocol for quantitative analysis of mineral IR spectra TS - Experimental evaluation and development of a protocol for quantitative analysis of mineral IR spectra JF - AMERICAN MINERALOGIST J2 - AM MINERAL VL - 93 PY - 2008 IS - 56 SP - 765 EP - 778 PG - 14 SN - 0003-004X DO - 10.2138/am.2008.2656 UR - https://m2.mtmt.hu/api/publication/1452387 ID - 1452387 LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Szabó, Csaba TI - Middle Miocene volcanism in the vicinity of the Middle Hungarian zone: Evidence for an inherited enriched mantle source JF - JOURNAL OF GEODYNAMICS J2 - J GEODYN VL - 45 PY - 2008 IS - 1 SP - 1 EP - 17 PG - 17 SN - 0264-3707 DO - 10.1016/j.jog.2007.06.002 UR - https://m2.mtmt.hu/api/publication/1887374 ID - 1887374 N1 - Eötvös University, Department of Petrology and Geochemistry, Lithosphere Fluid Research Lab, H-1117 Pazmany Peter setany 1/C, Budpest, Hungary Australian National University, Research School of Earth Sciences, Mills Road, Blg 61, 0200 Canberra, ACT, Australia Division of Earth Environmental System, College of Natural Sciences, Pusan National University, Busan, 609-735, South Korea Cited By :57 Export Date: 19 October 2022 Correspondence Address: Kovács, I.; Eötvös University, , H-1117 Pazmany Peter setany 1/C, Budpest, Hungary; email: istvan.kovacs@anu.edu.au AB - Middle Miocene igneous rocks in the vicinity of the Middle Hungarian zone (MHZ) show a number of subduction-related geochemical characteristics. Many of these characteristics appear to be time-integrated, showing a decreasing subduction signature with time. In contrast to previous models, which suggest southward-dipping subduction of European lithosphere beneath the Alcapa microplate (along the Western Carpathians) is responsible for the chemical characteristics seen in middle Miocene volcanics, we propose that source enrichment occurred via the subduction of either the Budva-Pindos or Vardar Oceans. Recent seismic studies have revealed that the proposed southward-dipping subduction was not developed beneath the entire Western Carpathians or, even if it had, was overprinted by the collision of the European plate and the Alcapa unit at 16 Ma. This subduction is thought to have started 30 Ma ago, therefore the time between the onset of subduction and collision cannot account for extensive source enrichment in the overlying mantle wedge. It is also pertinent to note that the middle Miocene igneous rocks of the MHZ in their reconstructed positions are not parallel to the supposed suture expected for subduction-related arc volcanoes. Our review suggests an alternative hypothesis, whereby source enrichment is related to the subduction of either the Budva-Pindos or Vardar Ocean during the Mesozoic-Paleogene. In this model the Alcapa microplate was transferred to its present tectonic position via extrusion and rotations. Geophysical modeling and mantle xenoliths provide evidence that this process occurred at the scale of the lithospheric mantle, indicating that the subduction-modified lithospheric mantle was coupled to the crust. Melting in the lithospheric mantle of the Alcapa unit was triggered by the extension during the formation of the Pannonian Basin. The preserved subduction-related geochemical character of volcanics in intra-plate settings that are otherwise directly unaffected by subduction, can be attributed to tectonic transport of metasomatised mantle from a previous subduction-affected setting. This model provides an alternative approach to understanding the geochemical complexity seen among intra-plate calc-alkaline volcanics, where chemical characteristics can be explained without the involvement of plumes. (C) 2007 Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Sambridge, M AU - Gerald, JF AU - Kovács, István János AU - O'Neill, HStC AU - Hermann, J TI - Quantitative absorbance spectroscopy with unpolarized light: Part I. Physical and mathematical development JF - AMERICAN MINERALOGIST J2 - AM MINERAL VL - 93 PY - 2008 IS - 5-6 SP - 751 EP - 764 PG - 14 SN - 0003-004X DO - 10.2138/am.2008.2657 UR - https://m2.mtmt.hu/api/publication/2030783 ID - 2030783 AB - A new approach to the use of spectroscopic absorbance measurements for anisotropic crystals allows results to be extracted using unpolarized light incident on random crystal orientations. The theory of light propagation in anisotropic absorbing crystals is developed from Maxwell's equations to devise an expression for the transmittance of linearly polarized light traveling in an arbitrary direction in weakly absorbing media. This theory predicts the distribution of transmittance and absorbance as a function of direction and polarization angle of incident light. It is shown how a previously deduced empirical expression, commonly used in infrared spectroscopy, is a good approximation to the full theory under a wide range of conditions. The new theory shows that principal polarized absorbances correspond to the eigenvalues of an absorbance ellipsoid. An expression is derived for the unpolarized absorbance as a function of the angles describing incident light direction, A unpol(φ, ψ), and the principal polarized absorbances, A a, A b, A c in an anisotropic crystal. A unpol(φ,ψ) = 1/2[A a(cos 2φcos 2ψ + sin 2ψ) + A b(cos 2φsin 2ψ + cos 2ψ) + A csin 2φ]. Integration of this expression over all incident angles leads to a simple relationship between total measured unpolarized absorbance and the three principal polarized absorbances. Using this theory, a procedure is proposed for estimating both total (A a + A b + A c) and principal absorbances from spectroscopic measurements of absorbance using unpolarized light on a set of randomly oriented crystals. LA - English DB - MTMT ER - TY - JOUR AU - Zajacz, Z AU - Kovács, István János AU - Szabó, Csaba AU - Halter, W AU - Pettke, T TI - Evolution of mafic alkaline melts in the uppermost lithospheric mantle: a melt inclusion study of olivine clinopyroxenite xenoliths, northern Hungary JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 48 PY - 2007 IS - 5 SP - 853 EP - 883 PG - 31 SN - 0022-3530 DO - 10.1093/petrology/egm004 UR - https://m2.mtmt.hu/api/publication/1884823 ID - 1884823 N1 - Department of Earth Sciences, Institute of Isotope Geochemistry and Mineral Resources, ETH Zürich, 8092 Zürich, Switzerland Research School of Earth Science, The Australian National University, Building 61 Mills Road, Canberra, ACT 0200, Australia Lithosphere Fluid Research Laboratory, Institute of Geography and Earth Sciences, Eötvös University Budapest (ELTE), Pazmany Setany 1/c, Budapest H-1117, Hungary University of Bern, Institute of Geological Science, Baltzerstrasse 1-3, CH-3012 Bern, Switzerland Cited By :36 Export Date: 7 October 2022 Correspondence Address: Zajacz, Z.; Department of Earth Sciences, , 8092 Zürich, Switzerland; email: zajacz@erdw.ethz.ch LA - English DB - MTMT ER - TY - JOUR AU - Pécskay, Zoltán AU - Lexa, J AU - Szakács, A AU - Seghedi, I AU - Balogh, Kadosa AU - Konečný, V AU - Zelenka, T AU - Kovacs, M AU - Póka, Teréz AU - Fülöp, A AU - Márton Péterné Szalay, Emőke AU - Panaiotu, C AU - Cvetković, V TI - Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area: a review. JF - GEOLOGICA CARPATHICA J2 - GEOL CARPATH VL - 57 PY - 2006 IS - 6 SP - 511 EP - 530 PG - 20 SN - 1335-0552 UR - https://m2.mtmt.hu/api/publication/1155705 ID - 1155705 N1 - Megjegyzés-27387812 Megjegyzés-23248201 : Ioan/0000-0001-7381-7802 Megjegyzés-23316058 : Ioan/0000-0001-7381-7802 Megjegyzés-23331105 : Ioan/0000-0001-7381-7802 Megjegyzés-23359179 : Ioan/0000-0001-7381-7802 Megjegyzés-23360036 : Ioan/0000-0001-7381-7802 Megjegyzés-23383847 : Ioan/0000-0001-7381-7802 Megjegyzés-23393526 : Ioan/0000-0001-7381-7802 Megjegyzés-23402530 : Ioan/0000-0001-7381-7802 Megjegyzés-24076658 : Ioan/0000-0001-7381-7802 AB - Neogene to Quaternary volcanism in the Carpathian-Pannonian Region was related to the youngest evolutionary stage of the Carpathian arc and the intra-Carpathian area, with subduction, extension and asthenospheric upwelling as the main driving mechanisms. Volcanism occurred between 21 and 0.1 Ma, and showed a distinct migration in time from West to East. Several groups of calc-alkaline magmatic rock-types (felsic, intermediate and mafic varieties) have been distinguished, and several minor alkalic types also occur, including shoshonitic, K-trachytic, ultrapotassic and alkali basaltic. On the basis of spatial distribution, relationship to tectonic processes and their chemical composition, the volcanic formations can be divided into: (1) areally distributed felsic talc-alkaline formations related to the initial stages of back-arc extension, (2) areally distributed intermediate calc-alkaline formations related to advanced stages of back-arc extension, (3) "arc-type" andesite volcanic formations with a complex relationship to subduction processes, and (4) alkali basaltic magmatism related to post-convergence extension. Petrological data and geotectonic reconstructions, which involve these magmatic groups, place significant constraints on geodynamic models of the Carpathian-Pannonian area. Subduction and back-arc extension were not contemporaneous across the whole Carpathian arc and intra-Carpathian area. Instead, three major geographical segments can be defined (Western, Central, Eastern segments) with a progressively younger timing of subduction roll-back and back-arc extension: 21-11 Ma, 16-9 Ma, 14-0 Ma, respectively. Short-lived subduction-related volcanic activity can be interpreted as either an indication of a limited width of subducted crust (not greater than 200 km) or an indication of detachment of the sinking slab. Interpretation of the areally distributed felsic and intermediate calc-alkaline volcanic formations are considered as being initiated by back-arc extension induced by diapiric uprise of "fertile" asthenospheric material. LA - English DB - MTMT ER - TY - JOUR AU - Csontos, L AU - Vörös, Attila TI - Mesozoic plate tectonic reconstruction of the carpathian region JF - PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY J2 - PALAEOGEOGR PALAEOCL VL - 210 PY - 2004 IS - 1 SP - 1 EP - 56 PG - 56 SN - 0031-0182 DO - 10.1016/j.palaeo.2004.02.033 UR - https://m2.mtmt.hu/api/publication/1236932 ID - 1236932 N1 - Cited By :483 Export Date: 11 November 2022 CODEN: PPPYA Correspondence Address: Csontos, L.; Geological Department, Pazmany P: setany 1/a, Budapest 1117, Hungary; email: csontos@ludens.elte.hu Funding details: Hungarian Science Foundation, T 037595, T 043760 Funding text 1: The authors are indebted to many colleagues for the discussions of earlier oral and written versions of the manuscript. We would like to thank especially F. Horváth, A. Galácz, S. Kovács, M. Kázmér, E. Márton (Budapest), D. Plašienka, M. Kováč (Bratislava), F. Neubauer and Č. Tomek (Salzburg), K. Birkenmajer (Kraków), M. Săndulescu (Bucharest) S. Schmid (Basel) and P. Ziegler (Basel). We express our thanks to W. Frisch, F. Horváth, G. Stampfli, Alonso-Gutierrez, J. Von Raumer, B. Murphy, A. Collins and D. Nance who kindly revised and improved earlier versions of the manuscript. This version was helped by critical remarks of K. Birkenmajer, F. Neubauer, B. Sperner, G. Stampfli, and F. Surlyk. IGCP project 453 is gratefully thanked for moral and material support. Hungarian Science Foundation OTKA projects T 043760, T 037595 are also thanked for support. AB - Palaeomagnetic, palaeobiogeographic and structural comparisons of different parts of the Alpine-Carpathian region suggest that four terranes comprise this area: the Alcapa, Tisza, Dacia and Adria terranes. These terranes are composed of different Mesozoic continental and oceanic fragments that were each assembled during a complex Late Jurassic-Cretaceous Palaeogene history. Palaeomagnetic and tectonic data suggest that the Carpathians are built up by two major oroclinal bends. The Alcapa bend has the Meliata oceanic unit, correlated with the Dinaric Vardar ophiolite, in its core. It is composed of the Western Carpathians, Eastern Alps and Southern Alcapa units (Transdanubian Range, Bukk). This terrane finds its continuation in the High Karst margin of the Dinarides. Further elements of the Alcapa terrane are thought to be derived from collided microcontinents: Czorsztyn in the N and a carbonate unit (Tisza?) in the SE. The Tisza-Dacia bend has the Vardar oceanic unit in its core. It is composed of the Bihor and Getic microcontinents. This terrane finds its continuation in the Serbo-Macedonian Massif of the Balkans. The Bihor-Getic microcontinent originally laid east of the Western Carpathians and filled the present Carpathian embayment in the Late Palaeozoic-Early Mesozoic. The Vardar ocean occupied an intermediate position between the Western Carpathian-Austroalpine-Transdanubian-High Karst margin and the Bihor-Getic-Serbo-Macedonian microcontinent. The Vardar and Pindos oceans were opened in the heart of the Mediterranean-Adriatic microcontinent in the Late Permian-Middle Triassic. Vardar subducted by the end of Jurassic, causing the Bihor-Getic-Serbo-Macedonian microcontinent to collide with the internal Dinaric-Western Carpathian margin. An external Penninic-Vahic ocean tract began opening in the Early Jurassic, separating the Austroalpine-Western Carpathian microcontinent (and its fauna) from the European shelf. Further east, the Severin-Ceahlau-Magura also began opening in the Early Jurassic, but final separation of the Bihor-Getic ribbon (and its fauna) from the European shelf did not take place until the late Middle Jurassic. The Alcapa and the Tisza-Dacia were bending during the Albian-Maastrichtian. The two oroclinal bends were finally opposed and pushed into the gates of the Carpathian embayment during the Palaeogene and Neogene. At that time, the main NS shortening in distant Alpine and Hellenic sectors was linked by a broader right-lateral shear zone along the former Vardar suture. (C) 2004 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Zajacz, Z AU - Szabó, Csaba TI - Type-II xenoliths and related metasomatism from the Nógrád-Gömör Volcanic Field, Carpathian-Pannonian region (northern Hungary-southern Slovakia) JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 393 PY - 2004 IS - 1-4 SP - 139 EP - 161 PG - 23 SN - 0040-1951 DO - 10.1016/j.tecto.2004.07.032 UR - https://m2.mtmt.hu/api/publication/1883941 ID - 1883941 N1 - #Kötet ismeretlen LA - English DB - MTMT ER - TY - JOUR AU - Seghedi, I AU - Downes, H AU - Vaselli, O AU - Szakacs, A AU - Balogh, Kadosa AU - Pécskay, Zoltán TI - Post-collisional Tertiary-Quaternary mafic alkalic magmatism in the Carpathian-Pannonian region: a review JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 393 PY - 2004 IS - 1-4 SP - 43 EP - 62 PG - 20 SN - 0040-1951 DO - 10.1016/j.tecto.2004.07.051 UR - https://m2.mtmt.hu/api/publication/1507563 ID - 1507563 N1 - [ATKI P18025] AB - Mafic alkalic volcanism was widespread in the Carpathian-Pannonian region (CPR) between 11 and 0.2 Ma. It followed the Miocene continental collision of the Alcapa and Tisia blocks with the European plate, as subduction-related calc-alkaline magmatism was waning. Several groups of mafic alkalic rocks from different regions within the CPR have been distinguished oil the basis of ages and/or trace-element compositions. Their trace element and Sr-Nd-Pb isotope systematics are consistent with derivation from complex mantle-source regions, which included both depleted asthenosphere and metasomatized lithosphere. The mixing of DMM-HIMU-EMII mantle components within asthenosphere-derived magmas indicates variable contamination of the shallow asthenosphere and/or thermal boundary layer of the lithosphere by a HIMU-Iike component prior to and following the introduction of subduction components. Various mantle sources have been identified: Lower lithospheric mantle modified by several ancient asthenospheric enrichments (source A); Young asthenospheric plumes with OIB-like trace element signatures that are either isotopically enriched (source B) or variably depleted (source Q; Old upper asthenosphere heterogeneously contaminated by DM-HIMU-EMII-EMI components and slightly influenced by Miocene subduction-related enrichment (source D); Old upper asthenosphere heterogeneously contaminated by DM-HIMU-EMII components and significantly influenced by Miocene subduction-related enrichment (source E). Melt generation was initiated either by: (i) finger-like young asthenospheric plumes rising to and heating up the base of the lithosphere (below the Alcapa block), or (ii) decompressional melting of old asthenosphere upwelling to replace any lower lithosphere or heating and melting former subducted slabs (the Tisia block). (C) 2004 Published by Elsevier B.V. LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs AU - Downes, H AU - Kósa, L AU - Szabó, Csaba AU - Thirlwall, M F AU - Mason, P R D AU - Mattey, D TI - Almandine garnet in calc-alkaline volcanic rocks of the Northern Pannonian Basin (Eastern-Central Europe): geochemistry, petrogenesis and geodynamic implications. JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 42 PY - 2001 IS - 10 SP - 1813 EP - 1843 PG - 31 SN - 0022-3530 DO - 10.1093/petrology/42.10.1813 UR - https://m2.mtmt.hu/api/publication/1855098 ID - 1855098 N1 - Megjegyzés-23801642 N1 Cited By (since 1996):74 LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs TI - Neogene to Quaternary Volcanism of the Carpathian-Pannonian Region - a review. JF - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES J2 - ACTA GEOL HUNG VL - 44 PY - 2001 IS - 2-3 SP - 223 EP - 258 PG - 36 SN - 0236-5278 UR - https://m2.mtmt.hu/api/publication/1855089 ID - 1855089 N1 - Megjegyzés-21388073 [H24971->P13394] Megjegyzés-10234086 [H20080->P12840] LA - English DB - MTMT ER - TY - JOUR AU - Csontos, L AU - Nagymarosy, András TI - The mid-Hungarian line: a zone of repeated tectonic inversions JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 297 PY - 1998 IS - 1-4 SP - 51 EP - 71 PG - 21 SN - 0040-1951 DO - 10.1016/S0040-1951(98)00163-2 UR - https://m2.mtmt.hu/api/publication/2899915 ID - 2899915 N1 - Hiányzó város: 'LINDABRUNN' Megjegyzés-22049443 Z9: 75 WC: Geochemistry & Geophysics AB - The Mid-Hungarian line is a major tectonic feature of the Intra-Carpathian area separating two terranes of different origin and tectonic structure. Although this tectonic line was known from borehole records, it has not been described in seismic sections. The study presents interpreted seismic lines crossing the supposed trace of the Mid-Hungarian line. These seismic sections show north-dipping normal faults and thrust faults as well as cross-cutting young strike-slip faults. A complex tectonic history is deduced, including intra-Oligocene-Early Miocene thrusting, Middle Miocene extension, local Late Miocene inversion and Late Miocene-Pliocene normal faulting and left-lateral wrenching. In the light of our seismic study we think that the best candidate for the Mid-Hungarian line is a north-dipping detachment fault beneath large masses of Neogene volcanics. The auxiliary structures to the north seen on seismic sections suggest that it moved as a south-vergent thrust fault during the Palaeogene-Early Miocene which later was reactivated as a set of normal faults. The northern Alcapa unit overrode the southern Tisza-Dacia unit along this fault zone. The same relative positions are observed in the northern termination of the line. Other structures along the supposed trace of the line are north-dipping normal-or strike-slip faults which frequently were reactivated as smaller thrust faults during the late Neogene. Palaeogene-Early Miocene thrusting along the line might be the result of the opposite Tertiary rotations of the two major units, as suggested by palaeomagnetic measurements and earlier models. (C) 1998 Elsevier Science B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Csaba AU - Bodnar, RJ TI - Fluid-inclusion evidence for an upper-mantle origin for green clinopyroxenes in late Cenozoic basanites from the Nograd-Gomor Volcanic Field, northern Hungary/southern Slovakia JF - INTERNATIONAL GEOLOGY REVIEW J2 - INT GEOL REV VL - 40 PY - 1998 IS - 9 SP - 765 EP - 773 PG - 9 SN - 0020-6814 UR - https://m2.mtmt.hu/api/publication/2269599 ID - 2269599 AB - Green clinopyroxenes with elevated Fe and Na contents coexist with "normal" clinopyroxene phenocrysts in alkali basalts from the Nograd-Gomor Volcanic Field (NGVF) of northern Hungary and southern Slovakia. The coexistence of these clinopyroxenes with incompatible compositions in the same sample is often used as evidence for mixing between a mafic and a more evolved melt. However, results of fluid-inclusion, textural, and geochemical studies of samples from Tertiary basanites from the NGVF suggest that the majority of the green clinopyroxenes could not have formed from magma mixing but, rather, are products of lithospheric processes such as metasomatism or dynamic melt flow. Two distinct types of green clinopyroxenes have been identified. Group 1 green clinopyroxenes are Al rich and contain CO2 inclusions; Group 2 green clinopyroxenes are Al poor and lack CO2 inclusions. On the basis of analysis of CO2 inclusions, the Group 1 clinopyroxenes, observed as xenocrysts and major constituents of clinopyroxenite xenoliths, were entrained into the host basanitic magmas in the uppermost mantle. These clinopyroxenes originally formed during a metasomatic event or as a result of dynamic melt flow in the mantle. Group 2 clinopyroxenes likely represent xenocrysts from disaggregated dioritic cumulates produced from melt(s) related to the host basanitic magmas. LA - English DB - MTMT ER - TY - JOUR AU - Szafian, P AU - Horváth, Ferenc AU - Cloetingh, S TI - Gravity constraints on the crustal structure and slab evolution along a transcarpathian transect JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 272 PY - 1997 IS - 2-4 SP - 233 EP - 247 PG - 15 SN - 0040-1951 DO - 10.1016/S0040-1951(96)00260-0 UR - https://m2.mtmt.hu/api/publication/1255458 ID - 1255458 N1 - DE: gravity modelling; basin evolution; collisional orogens AB - A new, unified Bouguer anomaly map of the Carpathian are and the Pannonian basin has been compiled from previously prepared and recently published gravity maps. In order to constrain the crustal structure and the tectonic evolution of the area, a two-dimensional gravity model is presented along a Western Carpathians-Pannonian basin-Southern Carpathians transect. The model is based on deep seismic lines, where available, and on detailed geological sections. The results confirm that the extensional crustal structure of the Pannonian basin revealed by deep seismic surveys agrees with the gravity data. Furthermore, they suggest that the Western and Southern Carpathians are at different stages of their evolution: the subducted oceanic slab under the Western Carpathians has already been assimilated to the asthenosphere, while a crustal slab is still present under the Southern Carpathians. These findings are compatible with the observation that the last major phase of crustal shortening terminated at the early Middle Miocene in the Western Carpathians, but continued throughout the Pliocene in the Southern Carpathians. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Csaba AU - Bodnar, RJ TI - Changing magma ascent rates in the Nógrád-Gömör volcanic field northern Hungary southern Slovakia: Evidence from CO2-rich fluid inclusions in metasomatized upper mantle xenoliths JF - PETROLOGY J2 - PETROLOGY+ VL - 4 PY - 1996 IS - 3 SP - 221 EP - 230 PG - 10 SN - 0869-5911 UR - https://m2.mtmt.hu/api/publication/2195543 ID - 2195543 N1 - CT International Symposium on Melt Inclusions and Petrogenic Indicators in : Igneous Environments, at the 1995 Spring AGU Session CY 1995 CL BALTIMORE, MD AB - Metasomatized upper mantle xenoliths from the Nograd-Gomor Volcanic Field of north Hungary and south Slovakia contain two distinctly different occurrences of CO2 inclusions. An earlier generation of inclusions shows re-equilibration textures produced by hi,oh internal pressures generated following trapping. These inclusions were trapped below the MOHO at a depth of 30-50 km in the amphibole-bearing spinel lherzolite stability field, and their xenolith hosts were transported to the MOHO in approximate to 36 hours at an ascent rate of 0.1 m/sec. At the MOHO, fluid lost from the earlier generation of CO2 inclusions during re-equilibration was trapped to form a younger generation of CO2 inclusions. The xenoliths containing the inclusions were subsequently erupted from this depth to the surface in approximate to 1.5 hours at an ascent rate of 5 m/sec. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Csaba AU - Bodnar, RJ AU - Sobolev, AV TI - Metasomatism associated with subduction-related, volatile-rich silicate melt in the upper mantle beneath the Nógrád-Gömör volcanic field, northern Hungary southern Slovakia: Evidence from silicate melt inclusions JF - EUROPEAN JOURNAL OF MINERALOGY J2 - EUR J MINERAL VL - 8 PY - 1996 IS - 5 SP - 881 EP - 899 PG - 19 SN - 0935-1221 UR - https://m2.mtmt.hu/api/publication/2195496 ID - 2195496 N1 - : STUTTGART, GERMANY AB - Metasomatized upper mantle xenoliths from the Nograd-Gomor Volcanic Field (NGVF) of north Hungary and south Slovakia contain ''andesitic'' and ''basaltic'' silicate melt inclusions hosted mainly in olivines. Melt pockets occur interstitial to mantle phases. Other melt accumulations are spatially associated with ortho- and clinopyroxenes and amphiboles. Petrographic and geochemical data suggest a common source for these distinctly different occurrences. Of the possible origins for the melt in inclusions, melt pockets and other melt accumulations, the one that is most consistent with the available data is a subduction-related, volatile-rich silicate melt that infiltrated through and interacted with mantle phases, causing cryptic and modal metasomatism in the peridotitic wall-rock and a progressive evolution of the melt composition to produce residual melts. Formation of melt pockets and multiphase silicate melt inclusions with ''basaltic'' composition was associated with the less residual melts. Conversely, more evolved melts, enriched in silica, alumina, alkalies and CO2, percolated through the shallow lithospheric mantle with little or no interaction and were trapped as ''andesitic'' silicate melt inclusions. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Csaba AU - Taylor, L A TI - Mantle petrology and geochemistry beneath the Nógrád-Gömör Volcanic Field, Carpathian-Pannonian Region, JF - INTERNATIONAL GEOLOGY REVIEW J2 - INT GEOL REV VL - 36 PY - 1994 SP - 328 EP - 358 PG - 31 SN - 0020-6814 DO - 10.1080/00206819409465465 UR - https://m2.mtmt.hu/api/publication/2156105 ID - 2156105 LA - English DB - MTMT ER - TY - JOUR AU - Embey-Isztin, Antal AU - Downes, H AU - James, DE AU - Upton, BGJ AU - Dobosi, Gábor AU - Ingram, GA AU - Harmon, RS AU - Scharbert, HG TI - The petrogenesis of pliocene alkaline volcanic rocks from the Pannonian Basin, Eastern Central Europe. The petrogenesis of Pliocene alkaline volcanic rocks from the Pannonian Basin, Eastern Central Europe TS - The petrogenesis of Pliocene alkaline volcanic rocks from the Pannonian Basin, Eastern Central Europe JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 34 PY - 1993 IS - 2 SP - 317 EP - 343 PG - 27 SN - 0022-3530 DO - 10.1093/petrology/34.2.317 UR - https://m2.mtmt.hu/api/publication/1124683 ID - 1124683 AB - Late Tertiary post-orogenic alkaline basalts erupted in the extensional Pannonian Basin following Eocene-Miocene subduction and its related calc-alkaline volcanism. The alkaline volcanic centres, dated between 11.7 and 1.4 Ma, are concentrated in several regions of the Pannonian Basin. Some are near the western (Graz Basin, Burgenland), northern (Nograd), and eastern (Transylvania) margins of the basin, but the majority are concentrated near the Central Range (Balaton area and Little Hungarian Plain). Fresh samples from 31 volcanic centres of the extension-related lavas range from slightly hy-normative transitional basalts through alkali basalts and basanites to olivine nephelinites. No highly evolved compositions have been encountered. The presence of peridotite xenoliths, mantle xenocrysts, and high-pressure megacrysts, even in the slightly more evolved rocks, indicates that differentiation took place within the upper mantle. Rare earth elements (REE) and Sr-87/Sr-86, Nd-143/Nd-144, deltaO-18, deltaD, and Pb isotopic ratios have been determined on a subset of samples, and also on clinopyroxene and amphibole megacrysts. Sr and Nd isotope ratios span the range of Neogene alkali basalts from western and central Europe, and suggest that the magmas of the Pannonian Basin were dominantly derived from asthenospheric partial melting, but Pb isotopes indicate that in most cases they were modified by melt components from the enriched lithospheric mantle through which they have ascended. DeltaO-18 values indicate that the magmas have not been significantly contaminated with crustal material during ascent, and isotopic and trace-element ratios therefore reflect mantle source characteristics. Incompatible-element patterns show that the basic lavas erupted in the Balaton area and Little Hungarian Plain are relatively homogeneous and are enriched in K, Rb, Ba, Sr, and Pb with respect to average ocean island basalt, and resemble alkali basalts of Gough Island. In addition, Pb-207/Pb-204 is enriched relative to Pb-206/Pb-204. In these respects, the lavas of the Balaton area and the Little Hungarian Plain differ from those of other regions of Neogene alkaline magmatism of Europe. This may be due to the introduction of marine sediments into the mantle during the earlier period of subduction and metasomatism of the lithosphere by slab-derived fluids rich in K, Rb, Ba, Pb, and Sr. Lavas erupted in the peripheral areas have incompatible-element patterns and isotopic characteristics different from those of the central areas of the basin, and more closely resemble Neogene alkaline lavas from areas of western Europe where recent subduction has not occurred. LA - English DB - MTMT ER - TY - JOUR AU - Horváth, Ferenc TI - TOWARDS A MECHANICAL MODEL FOR THE FORMATION OF THE PANNONIAN BASIN JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 226 PY - 1993 IS - 1-4 SP - 333 EP - 357 PG - 25 SN - 0040-1951 DO - 10.1016/0040-1951(93)90126-5 UR - https://m2.mtmt.hu/api/publication/1255446 ID - 1255446 AB - New maps showing crustal and lithospheric thickness variations in the Pannonian basin and the surrounding East Alpine, Carpathian and Dinaric mountains have been prepared on the basis of recent seismic, seismologic and electromagnetic data. A map presenting Miocene faults of regional significance has been also constructed for the same region by using a wealth of recently available national and/or more local studies. It is suggested that observed crustal and lithospheric structural contrasts have been controlled primarily by Neogene kinematic history of the region. Kinematic history is characterized by the following main patterns: (1) indentation by Adria and large-scale backthrusting in the Southern Alps; (2) eastward escape and extension of the Eastern Alps; (3) extensional collapse in the Pannonian basin area; (4) formation of broad wrench fault systems along strike in the Dinarides and Southern Carpathians, and the Western Carpathians with dextral and sinistral shear, respectively; (5) compression and accretion of the external thrust and fold belt in the Eastern Carpathians. These kinematic patterns are thought to be interrelated and all are manifestations of the late-stage evolution of an overthickened orogenic wedge. In order to arrive at a better understanding of the mechanism of extension, which formed the Pannonian basin, deep crustal seismic profiles, hydrocarbon exploration reflection lines and borehole data have been analyzed in the Little Hungarian Plain. This plain represents the transition zone between the Alps and the Pannonian lowlands, and the results are illustrated by eight interpreted cross-sections. One result of regional importance is the clear recognition that the Transdanubian Central Range at the southeastern flank of the Little Hungarian Plain is composed of Alpine (pre-Senonian) thrust sheets. This finding marks the end of a century of debate: the allochthony of the substrata of the Pannonian basin can be now considered proven. Another result of more general interest is that these cross-sections document the mode of lithospheric extension. Preexisting compressional detachment planes reactivate as low-angle normal faults and lead to tectonic unroofing of deeply buried metamorphic terranes characterized by ductile flow along subhorizontal lineation. LA - English DB - MTMT ER - TY - JOUR AU - CSONTOS, L AU - Nagymarosy, András AU - Horváth, Ferenc AU - KOVAC, M TI - TERTIARY EVOLUTION OF THE INTRA-CARPATHIAN AREA - A MODEL JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 208 PY - 1992 IS - 1-3 SP - 221 EP - 241 PG - 21 SN - 0040-1951 DO - 10.1016/0040-1951(92)90346-8 UR - https://m2.mtmt.hu/api/publication/1255443 ID - 1255443 N1 - Eötvös University of Budapest, Department of Geology, 1088 Budapest, Múzeum krt. 4 / a, Hungary Eötvös University of Budapest, Department of Geophysics, 1082 Budapest, Ludovika tér 2, Hungary Slovakian Academy of Sciences, Department of Geology, 81473 Bratislava, Dúbravska cesta, Czechoslovakia Cited By :473 Export Date: 11 November 2022 Correspondence Address: Csontos, L. AB - 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) The present distribution of the Mesozoic and Palaeogene facies is mosaic-like, and some belts form exotic bodies within realms of Austroalpine affinity. (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. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Csaba AU - Harangi, Szabolcs AU - Csontos, László TI - REVIEW OF NEOGENE AND QUATERNARY VOLCANISM OF THE CARPATHIAN PANNONIAN REGION JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 208 PY - 1992 IS - 1-3 SP - 243 EP - 256 PG - 14 SN - 0040-1951 DO - 10.1016/0040-1951(92)90347-9 UR - https://m2.mtmt.hu/api/publication/1855796 ID - 1855796 LA - English DB - MTMT ER - TY - JOUR AU - ROYDEN, LH AU - Horváth, Ferenc AU - BURCHFIEL, BC TI - TRANSFORM FAULTING, EXTENSION, AND SUBDUCTION IN THE CARPATHIAN PANNONIAN REGION JF - GEOLOGICAL SOCIETY OF AMERICA BULLETIN J2 - GEOL SOC AM BULL VL - 93 PY - 1982 IS - 8 SP - 717 EP - 725 PG - 9 SN - 0016-7606 DO - 10.1130/0016-7606(1982)93<717:TFEASI>2.0.CO;2 UR - https://m2.mtmt.hu/api/publication/1255406 ID - 1255406 LA - English DB - MTMT ER - TY - JOUR AU - Stegena, Lajos AU - Géczy, Barnabás AU - Horváth, Ferenc TI - Late Cenozoic Evolution of Pannonian Basin JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 26 PY - 1975 IS - 1-2 SP - 71 EP - 90 PG - 20 SN - 0040-1951 DO - 10.1016/0040-1951(75)90114-6 UR - https://m2.mtmt.hu/api/publication/1088575 ID - 1088575 N1 - Institute of Geophysics, Eötvös University, BudapestHungary Paleontological Institute, Eötvös University, BudapestHungary Cited By :121 Export Date: 31 October 2023 Correspondence Address: Stegena, L. LA - English DB - MTMT ER -