TY - JOUR AU - Koroneos, A AU - Poli, G AU - Cvetkovic, V AU - Christofides, G AU - Krstic, D AU - Pécskay, Zoltán TI - Petrogenetic and tectonic inferences from the study of the Mt Cer pluton (West Serbia) JF - GEOLOGICAL MAGAZINE J2 - GEOL MAG VL - 148 PY - 2011 IS - 1 SP - 89 EP - 111 PG - 23 SN - 0016-7568 DO - 10.1017/S0016756810000476 UR - https://m2.mtmt.hu/api/publication/1599626 ID - 1599626 AB - The Mt Cer Pluton, Serbia, is a complex laccolith-like intrusion (similar to 60 km(2)), situated along the junction between the southern Pannonian Basin and northern Dinarides. It intrudes Palaeozoic metamorphic rocks causing weak to strong thermal effects. Based on modal and chemical compositions, four rock-types can be distinguished: (1) metaluminous I-type quartz monzonite/quartz monzodiorite (QMZD); (2) peraluminous S-type two-mica granite (TMG), which intrudes QMZD; (3) Strazanica granodiorite/quartz monzonite (GDS); and (4) isolated mafic enclaves (ME), found only in QMZD. K-40-Ar-39 dating and geological constraints indicate that the main quartz monzonite/quartz monzodiorite body of Mt Cer was emplaced not later than 21 Ma, whereas the emplacement ages of the Strazanica granodiorite/quartz monzonite and two-mica granites are estimated at around 18 and 16 Ma, respectively. The Mt Cer pluton is similar to the Mt Bukulja pluton, some 80 km southwestwards. Genesis of QMZD cannot be interpreted by fractional crystallization coupled with mixing or assimilation. It is best explained by a convection-diffusion process between mantle-derived minette/leucominette magmas and GDS-like magmas followed by two end-member magma mixing. The composition of GDS rocks suggests that GDS-like magmas could have formed by melting of lower crustal lithologies similar to amphibolite/metabasalts. The geochemistry of TMG is reproduced by an Assimilation/Fractional Crystallization model with a ratio of rate of assimilation to rate of fractional crystallization of 0.4, using the compositions of the least evolved TMG of the Bukulja pluton and adjacent metamorphic rocks as proxies for the parental magma and contaminant, respectively. The origin and evolution of the Mt Cer and adjacent Mt Bukulja plutons provide new constraints on the Tertiary geodynamics of the northern Dinarides-southern Pannonian region. The quartz monzonite/quartz monzodiorite is interpreted as a result of the Oligocene post-collisional Dinaride orogen-collapse, which included a limited lithosphere delamination, small-scale mantle upwelling, and melting of the lower crust. By contrast, the two-mica granite magmas formed through melting in shallower crustal levels during the extensional collapse in the Pannonian area. LA - English DB - MTMT ER - TY - JOUR AU - Oeberseder, T AU - Behm, M AU - Kovács, István János AU - Falus, György TI - A seismic discontinuity in the upper mantle between the Eastern Alps and the Western Carpathians: Constraints from wide angle reflections and geological implications JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 504 PY - 2011 IS - 1-4 SP - 122 EP - 134 PG - 13 SN - 0040-1951 DO - 10.1016/j.tecto.2011.03.009 UR - https://m2.mtmt.hu/api/publication/1887377 ID - 1887377 N1 - Vienna University of Technology, Institute of Geodesy and Geophysics, Austria Eotvos Loránd Geophysical Institute of Hungary, Hungary Cited By :9 Export Date: 19 October 2022 Correspondence Address: Behm, M.; Vienna University of Technology, Austria; email: mbehm@mail.tuwien.ac.at AB - Seismic investigation of the lithosphere by means of active source experiments is mostly confined to the crust and the Moho. Structures in the upper mantle are more likely to be discovered by analyses of teleseismic data, although these methods are restricted in their resolution capabilities. The relatively rare evidence for upper mantle refractors or reflectors in active source data enables challenging and interesting studies of the lower and not so well known part of the lithosphere. We present such an example from the tectonically complex region between the Eastern Alps and the Western Carpathians. This area was covered by several extensive 3D wide-angle reflection/refraction experiments within the last decade, and their layout was designed to illuminate the crustal structure and in particular the Moho discontinuity. In some areas, reflections from below the Moho are also recorded. These reflections occur at recording offsets between 200 and 500 km, and they are particularly strong in cross line recordings. We derive a set of travel times from the data and perform a tomographic inversion for the depth and shape of the reflecting interface. The inversion makes use of an existing 3D crustal model which also includes the Moho topography. Since the upper mantle velocities are poorly constrained and the azimuthal distribution of the rays is biassed, several tests are applied to investigate the reliability of possible solutions. The results from the tomographic inversion indicate an overall horizontal and radially dipping reflector. The average depth of the reflector is 55 km, which is about 25 km below the crust-mantle transition, and amplitude modelling suggests that the reflecting interface represents a velocity increase. The investigated area is further characterised by deep sedimentary basins, high heat flow, high velocities in the lower crust, diffuse Moho signature and a strong positive Bouguer anomaly. Nearby xenolith outcrops exhibit a pronounced change in anisotropy and indicate the presence of two distinct layers in the lithospheric mantle, whereas the deeper layer is thought to present more juvenile lithosphere derived from thermal relaxation in the post-extension phase. Most likely the upper mantle reflector also represents this change in anisotropy, though other scenarios are also possible. We conclude that the entire lithosphere is significantly shaped by extensional processes which affect the area since the late Oligocene/early Miocene. (C) 2011 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Seghedi, I AU - Maţenco, L AU - Downes, H AU - Mason, P R D AU - Szakács, Alexandru AU - Pécskay, Zoltán TI - Tectonic significance of changes in post-subduction Pliocene-Quaternary magmatism in the south east part of the Carpathian-Pannonian Region JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 502 PY - 2011 IS - 1-2 SP - 146 EP - 157 PG - 12 SN - 0040-1951 DO - 10.1016/j.tecto.2009.12.003 UR - https://m2.mtmt.hu/api/publication/1576766 ID - 1576766 AB - The south-eastern part of the Carpathian-Pannonian region records the cessation of convergence between the European platform/Moesia and the Tisza-Dacia microplate. Plio-Quaternary magmatic activity in this area, in close proximity to the 'Vrancea zone', shows a shift from normal calc-alkaline to much more diverse compositions (adakite-like calc-alkaline, K-alkalic, mafic Na-alkalic and ultrapotassic), suggesting a significant change in geodynamic processes at approximately 3. Ma. We review the tectonic setting, timing, petrology and geochemistry of the post-collisional volcanism to constrain the role of orogenic building processes such as subduction or collision on melt production and migration. The calc-alkaline volcanism (5.3-3.9. Ma) marks the end of normal subduction-related magmatism along the post-collisional Cǎlimani-Gurghiu-Harghita volcanic chain in front of the European convergent plate margin. At ca. 3. Ma in South Harghita magma compositions changed to adakite-like calc-alkaline and continued until recent times (< 0.03. Ma) interrupted at 1.6-1.2. Ma by generation of Na and K-alkalic magmas, signifying changes in the source and melting mechanism. We attribute the changes in magma composition in front of the Moesian platform to two main geodynamic events: (1) slab-pull and steepening with opening of a tear window (adakite-like calc-alkaline magmas) and (2) renewed contraction associated with deep mantle processes such as slab steepening during post-collisional times (Na and K-alkalic magmas). Contemporaneous post-collisional volcanism at the eastern edge of the Pannonian Basin at 2.6-1.3. Ma was dominated by Na-alkalic and ultrapotassic magmas, suggesting a close relationship with thermal asthenospheric doming and strain partitioning related to the Adriatic indentation. Similar timing, magma chamber processes and volume for K-alkalic (shoshonitic) magmas in the South Apuseni Mountains (1.6. Ma) and South Harghita area at a distance of ca. 200. km imply a regional connection with the inversion tectonics. © 2009 Elsevier B.V. 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 - Haranginé Lukács, Réka AU - Harangi, Szabolcs AU - Radócz, Gy AU - Kádár, M AU - Pécskay, Zoltán AU - Ntaflos, T TI - A Miskolc-7, Miskolc-8 és Nyékládháza-1 fúrások miocén vulkáni kőzetei és párhuzamosításuk a Bükkalja vulkáni képződményeivel [The Miocene pyroclastic rocks of the boreholes Miskolc-7, Miskolc-8 and Nyékládháza-1 and their correlation with the ignimbrites of Bükkalja] JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 140 PY - 2010 IS - 1 SP - 31 EP - 51 PG - 21 SN - 0015-542X UR - https://m2.mtmt.hu/api/publication/1411924 ID - 1411924 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Tschegg, C AU - Ntaflos, T AU - Király, Ferenc János AU - Harangi, Szabolcs TI - High temperature corrosion of olivine phenocrysts in Pliocene basalts from Banat, Romania JF - AUSTRIAN JOURNAL OF EARTH SCIENCES J2 - AUST J EARTH SCI VL - 103 PY - 2010 IS - 1 SP - 101 EP - 110 PG - 10 SN - 0251-7493 UR - https://m2.mtmt.hu/api/publication/1856082 ID - 1856082 AB - Pliocene trachy-basalts from the eastern Pannonian Basin in Romania were studied to re-evaluate their petrogenesis and establish a new model for their eruption characteristics. Bulk major and trace element concentrations, as well as Sr and Nd radiogenic isotope ratios confirm their OIB type signature, totally unaffected and unrelated to precursor subduction activities in the Carpatho-Pannonian region. Late stage magmatic high temperature corrosion of olivine phenocrysts was analyzed in detail, using high-resolution electron-microprobe techniques. The data indicate that corrosion occurred shortly prior to eruption, due to interaction of the magma with groundwater. The triggered variation in oxygen fugacity results in an oxi-hydroxylised modification of the original structure of the oli-vine, which, after eruption and contemporaneous degassing of volatiles, was overgrown by fresh olivine rims. LA - English DB - MTMT ER - TY - JOUR AU - Klébesz, Rita AU - Harangi, Szabolcs AU - Ntaflos, T TI - Petrogenesis of the ultrapotassic trachyandesite at Balatonmária. A balatonmáriai ultrakáli trachiandezit petrogenezise TS - A balatonmáriai ultrakáli trachiandezit petrogenezise JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 139 PY - 2009 IS - 3 SP - 237 EP - 250 PG - 14 SN - 0015-542X UR - https://m2.mtmt.hu/api/publication/1854977 ID - 1854977 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Haranginé Lukács, Réka AU - Harangi, Szabolcs AU - Mason, P R D AU - Ntaflos, T TI - Bimodal pumice populations in the 13.5 Ma Harsány ignimbrite, Bükkalja Volcanic Field, Northern Hungary: syn-eruptive mingling of distinct rhyolitic magma batches? JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 52 PY - 2009 IS - 1 SP - 51 EP - 72 PG - 22 SN - 1788-2281 DO - 10.1556/CEuGeol.52.2009.1.4 UR - https://m2.mtmt.hu/api/publication/1411921 ID - 1411921 LA - English DB - MTMT ER - TY - JOUR AU - Pécskay, Zoltán AU - Seghedi, I AU - Kovács, M AU - Szakács, A AU - Fülöp, A TI - Geochronology of the Neogene calc-alkaline intrusive magmatism in the "Subvolcanic Zone" of the Eastern Carpathians (Romania) JF - GEOLOGICA CARPATHICA J2 - GEOL CARPATH VL - 60 PY - 2009 IS - 2 SP - 181 EP - 190 PG - 10 SN - 1335-0552 DO - 10.2478/v10096-009-0012-5 UR - https://m2.mtmt.hu/api/publication/150891 ID - 150891 N1 - ATKI2009/0006 [P21888] LA - English DB - MTMT ER - TY - JOUR AU - Danisik, M AU - Kohut, M AU - Dunkl, István AU - Hrasko, L AU - Frisch, W TI - Apatite fission track and (U-Th)/He thermochronology of the Rochovce granite (Slovakia) – implications for the thermal evolution of the Western Carpathian-Pannonian region JF - SWISS JOURNAL OF GEOSCIENCES J2 - SWISS J GEOSCI VL - 101 PY - 2008 SP - S225 EP - S233 SN - 1661-8726 DO - 10.1007/s00015-008-1279-8 UR - https://m2.mtmt.hu/api/publication/20591124 ID - 20591124 N1 - Supplement: S LA - English DB - MTMT ER - TY - JOUR AU - Fodor, László AU - Gerdes, A AU - Dunkl, István AU - Koroknai, B AU - Pécskay, Zoltán AU - Trajanova, M AU - Horváth, Péter AU - Vrabec, M AU - Jelen, B AU - Balogh, Kadosa AU - Frisch, W TI - Miocene emplacement and rapid cooling of the Pohorje pluton at the Alpine-Pannonian-Dinaridic junction, Slovenia JF - SWISS JOURNAL OF GEOSCIENCES J2 - SWISS J GEOSCI VL - 101 PY - 2008 IS - S1 SP - S255 EP - S271 SN - 1661-8726 DO - 10.1007/s00015-008-1286-9 UR - https://m2.mtmt.hu/api/publication/132817 ID - 132817 N1 - ATKI2008/0001 [P21865] Megjegyzés-24852761 Megjegyzés-20760932 FU: National Scientific Found of Hungary [T043344, M041434]; mineral : chemical and thermobarometric studies [047322/2004-2007]; Hungarian : Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG) FX: Fieldwork campaigns were supported by two bilateral intergovernmental : projects between Slovenia and Hungary (Slo5/98, Slo/6 00), donated to : B. Jelen, N. Zupancic and L. Fodor (project leaders) and also by : research programs in the Geological Institute of Hungary. K-Ar : measurements were supported by National Scientific Found of Hungary : (OTKA, project T043344 and M041434) donated to K. Balogh and Z. : Pecskay, and the mineral chemical and thermobarometric studies by the : grant No. F-047322/2004-2007 to V Horvath. L. Fodor benefited from the : Bolyai Janos scholarship of the Hungarian Academy of Sciences in : 2000-2001 and 2006-2007. John Corckery contributed to the fieldwork. : The paper benefited from the critical, but highly constructive reviews : of C. Rosenberg, U. Schaltegger and S. Schmid. The authors are thankful : for the careful and precise work of the staff at the RISO and Oregon : nuclear reactors. Deutsche Forschungsgemeinschaft (DFG) financed : fission track analyses in the frame of the Collaborative Research : Centre #275 in Tubingen. The authors are grateful for the careful : sample preparation made by Dagniar Kost, Gerlinde Hockh and Dorothea : Muhlbayer-Renner (Tobingen). SU: Suppl. S Megjegyzés-21045848 SU: Suppl. S Megjegyzés-21064703 FU: National Scientific Found of Hungary [T043344, M041434]; mineral : chemical and thermobarometric studies [047322/2004-2007]; Hungarian : Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG) FX: Fieldwork campaigns were supported by two bilateral intergovernmental : projects between Slovenia and Hungary (Slo5/98, Slo/6 00), donated to : B. Jelen, N. Zupancic and L. Fodor (project leaders) and also by : research programs in the Geological Institute of Hungary. K-Ar : measurements were supported by National Scientific Found of Hungary : (OTKA, project T043344 and M041434) donated to K. Balogh and Z. : Pecskay, and the mineral chemical and thermobarometric studies by the : grant No. F-047322/2004-2007 to V Horvath. L. Fodor benefited from the : Bolyai Janos scholarship of the Hungarian Academy of Sciences in : 2000-2001 and 2006-2007. John Corckery contributed to the fieldwork. : The paper benefited from the critical, but highly constructive reviews : of C. Rosenberg, U. Schaltegger and S. Schmid. The authors are thankful : for the careful and precise work of the staff at the RISO and Oregon : nuclear reactors. Deutsche Forschungsgemeinschaft (DFG) financed : fission track analyses in the frame of the Collaborative Research : Centre #275 in Tubingen. The authors are grateful for the careful : sample preparation made by Dagniar Kost, Gerlinde Hockh and Dorothea : Muhlbayer-Renner (Tobingen). SU: Suppl. S Megjegyzés-21064934 FU: National Scientific Found of Hungary [T043344, M041434]; mineral : chemical and thermobarometric studies [047322/2004-2007]; Hungarian : Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG) FX: Fieldwork campaigns were supported by two bilateral intergovernmental : projects between Slovenia and Hungary (Slo5/98, Slo/6 00), donated to : B. Jelen, N. Zupancic and L. Fodor (project leaders) and also by : research programs in the Geological Institute of Hungary. K-Ar : measurements were supported by National Scientific Found of Hungary : (OTKA, project T043344 and M041434) donated to K. Balogh and Z. : Pecskay, and the mineral chemical and thermobarometric studies by the : grant No. F-047322/2004-2007 to V Horvath. L. Fodor benefited from the : Bolyai Janos scholarship of the Hungarian Academy of Sciences in : 2000-2001 and 2006-2007. John Corckery contributed to the fieldwork. : The paper benefited from the critical, but highly constructive reviews : of C. Rosenberg, U. Schaltegger and S. Schmid. The authors are thankful : for the careful and precise work of the staff at the RISO and Oregon : nuclear reactors. Deutsche Forschungsgemeinschaft (DFG) financed : fission track analyses in the frame of the Collaborative Research : Centre #275 in Tubingen. The authors are grateful for the careful : sample preparation made by Dagniar Kost, Gerlinde Hockh and Dorothea : Muhlbayer-Renner (Tobingen). SU: Suppl. S Megjegyzés-21400989 SU: Suppl. S Megjegyzés-21646277 SU: Suppl. S Megjegyzés-23300111 SU S Megjegyzés-23316049 SU S Megjegyzés-23359176 SU S Supplement: S 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 - Seghedi, I AU - Ntaflos, T AU - Pécskay, Zoltán TI - The Gataia Pleistocene lamproite: a new occurrence at the southeastern edge of the Pannonian Basin, Romania JF - GEOLOGICAL SOCIETY SPECIAL PUBLICATIONS J2 - GEOL SOC SPEC PUBL VL - 293 PY - 2008 SP - 83 EP - 100 PG - 18 SN - 0305-8719 DO - 10.1144/SP293.5 UR - https://m2.mtmt.hu/api/publication/150619 ID - 150619 N1 - ATKI2008/0002 [P20979] Megjegyzés-26179580 BE Gregoire, M LA - English DB - MTMT ER - TY - JOUR AU - Yanev, Y AU - Boev, B AU - Doglioni, C AU - Innocenti, F AU - Manetti, P AU - Pécskay, Zoltán AU - Tonarini, S AU - D, Orazio M TI - Late Miocene to Pleistocene potassic volcanism in the Republic of Macedonia JF - MINERALOGY AND PETROLOGY J2 - MINER PETROL VL - 94 PY - 2008 IS - 1-2 SP - 45 EP - 60 PG - 16 SN - 0930-0708 DO - 10.1007/s00710-008-0009-2 UR - https://m2.mtmt.hu/api/publication/1599490 ID - 1599490 N1 - ID: P23778A Szerzők száma: 8 LA - English DB - MTMT ER - TY - JOUR AU - Bada, G AU - Horváth, Ferenc AU - Dovenyi, P AU - Szafian, P AU - Windhoffer, G AU - Cloetingh, S TI - Present-day stress field and tectonic inversion in the Pannonian basin JF - GLOBAL AND PLANETARY CHANGE J2 - GLOBAL PLANET CHANGE VL - 58 PY - 2007 IS - 1-4 SP - 165 EP - 180 PG - 16 SN - 0921-8181 DO - 10.1016/j.gloplacha.2007.01.007 UR - https://m2.mtmt.hu/api/publication/1255483 ID - 1255483 N1 - DE: stress field; basin inversion; neotectonics; Pannonian basin Megjegyzés-21170133 : Processes Megjegyzés-21170382 : Processes Megjegyzés-21170520 : Processes Megjegyzés-21170633 : Processes Megjegyzés-21170656 : Processes Megjegyzés-21170793 : Processes Megjegyzés-21170802 : Processes AB - This paper presents a latest compilation of data on the present-day stress pattern in the Pannonian basin, and its tectonic environment, the Alpine-Dinaric orogens. Extensional formation of the basin system commenced in the early Miocene, whereas its structural reactivation, in the form of gradual basin inversion, has been taking place since Pliocene to recent times. Reconstructed compression and associated horizontal contraction are mainly governed by the convergence between Adria and its buffer, the Alpine belt of orogens. The resulting contemporaneous stress field exhibits important lateral variation resulting in a complex pattern of ongoing tectonic activity. In the Friuli zone of the Southern Alps, where thrust faulting prevails, compression is orthogonal to the strike of the mountain belt. More to the southeast, intense contraction is combined with active strike-slip faulting constituting the dextral Dinaric transpressional corridor. Stresses are transferred far from Adria into the Pannonian basin, and the dominant style of deformation gradually changes from pure contraction through transpression to strike-slip faulting. The importance of late-stage inversion in the Pannonian basin is interpreted in a more general context of structural reactivation of backarc basins where the sources of compression driving basin inversion are also identified and discussed. The state of recent stress and deformation in the Pannonian basin, particularly in its western and southern part, is governed by the complex interaction of plate boundary and intra-plate forces. The counterclockwise rotation and north-northeast-directed indentation of the Adriatic microplate appears to be of key importance as the dominant source of compression ("Adria-push"). Intra-plate stress sources, such as buoyancy forces associated with an elevated topography, and crustal as well as lithospheric inhomogeneities can also play essential, yet rather local role. (C) 2007 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Cvetkovic, V AU - Poli, G AU - Christofides, G AU - Koroneos, A AU - Pécskay, Zoltán AU - Resimic-Saric, K AU - Eric, V TI - The Miocene granitoid rocks of Mt. Bukulja (central Serbia): evidence for pannonian extension-related granitoid magmatism in the northern Dinarides JF - EUROPEAN JOURNAL OF MINERALOGY J2 - EUR J MINERAL VL - 19 PY - 2007 IS - 4 SP - 513 EP - 532 PG - 20 SN - 0935-1221 DO - 10.1127/0935-1221/2007/0019-1736 UR - https://m2.mtmt.hu/api/publication/1507562 ID - 1507562 LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs AU - Downes, H AU - Thirlwall, M AU - Gméling, Katalin TI - Geochemistry, petrogenesis and geodynamic relationships of miocene calc-alkaline volcanic rocks in the western carpathian arc, Eastern Central Europe JF - JOURNAL OF PETROLOGY J2 - J PETROL VL - 48 PY - 2007 IS - 12 SP - 2261 EP - 2287 PG - 27 SN - 0022-3530 DO - 10.1093/petrology/egm059 UR - https://m2.mtmt.hu/api/publication/1248827 ID - 1248827 N1 - Cited By :85 Export Date: 18 January 2024 Correspondence Address: Harangi, S.; Department of Petrology and Geochemistry, Budapest H-1117, Pazmany Peter Setany 1/C, Hungary; email: szabolcs.harangi@geology.elte.hu AB - We report major and trace element abundances and Sr, Nd and Pb isotopic data for Miocene (16.5-11 Ma) calc-alkaline volcanic rocks from the western segment of the Carpathian arc. This volcanic suite consists mostly of andesites and dacites; basalts and basaltic andesites as well as rhyolites are rare and occur only at a late stage. Amphibole fractionation both at high and low pressure played a significant role in magmatic differentiation, accompanied by high-pressure garnet fractionation during the early stages. Sr-Nd-Pb isotopic data indicate a major role for crustal materials in the petrogenesis of the magmas. The parental mafic magmas could have been generated from an enriched mid-ocean ridge basalt (E-MORB)-type mantle source, previously metasomatized by fluids derived from subducted sediment. Initially, the mafic magmas ponded beneath the thick continental crust and initiated melting in the lower crust. Mixing of mafic magmas with silicic melts from metasedimentary lower crust resulted in relatively Al-rich hybrid dacitic magmas, from which almandine could crystallize at high pressure. The amount of crustal involvement in the petrogenesis of the magmas decreased with time as the continental crust thinned. A striking change of mantle source occurred at about 13 Ma. The basaltic magmas generated during the later stages of the calc-alkaline magmatism were derived from a more enriched mantle source, akin to FOZO. An upwelling mantle plume is unlikely to be present in this area; therefore this mantle component probably resides in the heterogeneous upper mantle. Following the calc-alkaline magmatism, alkaline mafic magmas erupted that were also generated from an enriched asthenospheric source. We propose that both types of magmatism were related in some way to lithospheric extension of the Pannonian Basin and that subduction played only an indirect role in generation of the calc-alkaline magmatism. The calc-alkaline magmas were formed during the peak phase of extension by melting of metasomatized, enriched lithospheric mantle and were contaminated by various crustal materials, whereas the alkaline mafic magmas were generated during the post-extensional stage by low-degree melting of the shallow asthenosphere. The western Carpathian volcanic areas provide an example of long-lasting magmatism in which magma compositions changed continuously in response to changing geodynamic setting. LA - English DB - MTMT ER - TY - CHAP AU - Harangi, Szabolcs AU - Lenkey, László ED - Beccaluva, L ED - Bianchini, G ED - Wilson, M TI - Genesis of the Neogene to Quaternary volcanism in the Carpathian-Pannonian region: Role of subduction, extension, and mantle plume T2 - Cenozoic Volcanism in the Mediterranean Area. (Geological Society of America Special Paper) PB - Geological Society of America CY - New York, New York SN - 9780813724188 PY - 2007 SP - 67 EP - 92 PG - 26 DO - 10.1130/2007.2418(04) UR - https://m2.mtmt.hu/api/publication/152183 ID - 152183 N1 - Cited By :127 Export Date: 10 May 2023 Correspondence Address: Harangi, S.; Department of Petrology and Geochemistry, Pazmany Peter Setany 1/C, H-1117 Budapest, Hungary; email: szabolcs.harangi@geology.elte.hu AB - Neogene to Quaternary volcanism of the Carpathian-Pannonian region is part of the extensive volcanic activity in the Mediterranean and surrounding regions. Using the spatial and temporal distribution of the magmatic rocks, their major-and traceelement features, and Sr-Nd-Pb isotope characteristics, we suggest that lithospheric extension in the Pannonian Basin had a major role in the generation of the magmas. Dehydration of subducting slab should have resulted in thorough metasomatism in the mantle wedge during Cretaceous to early Miocene that would have lowered the melting temperature, therefore playing an indirect role in the generation of magmas later on. Mixing between mantle-derived magmas and lower-crustal melts was an important process at the first stage of the silicic and calc-alkaline magmatism in the Northern Pannonian Basin. However, the crustal component gradually decreased with time, which is consistent with magmatic activity in a continuously thinning continental plate. Calc-alkaline volcanism along the Eastern Carpathians was mostly postcollisional and could have been related to slab break-off processes. However, the fairly young (<1.5 Ma) potassic magmatism at the southeasternmost segment of the Carpathian volcanic arc could be explained by lithospheric delamination under the Vrancea zone. Alkaline basaltic volcanism began at the end of rifting of the Pannonian Basin (11 Ma) and continued until recently. We suggest that a mantle plume beneath the Pannonian Basin is highly unlikely and the mafic magmas were formed by small degree partial melting in a heterogeneous asthenospheric mantle, which has been close to the solidus temperature due to the lithospheric extension in the Miocene. Magmatism appears to have been in a waning phase for the last 2 m.y., but recent volcanic eruptions (<200 k.y.) indicate that future volcanic activity cannot be unambiguously ruled out. © 2007 Geological Society of America. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, István János AU - Csontos, L AU - Szabó, Csaba AU - Bali, E AU - Falus, György AU - Benedek, Kálmán AU - Zajacz, Z TI - Paleogene-early miocene igneous rocks and geodynamics of the Alpine-Carpathian-Pannonian-Dinaric region: An integrated approach JF - SPECIAL PAPERS - GEOLOGICAL SOCIETY OF AMERICA J2 - SPEC PAP - GEOL SOC AM VL - 418 PY - 2007 SP - 93 EP - 112 PG - 20 SN - 0072-1077 DO - 10.1130/2007.2418(05) UR - https://m2.mtmt.hu/api/publication/1886586 ID - 1886586 N1 - Cited By :63 Export Date: 5 December 2022 Correspondence Address: Szabó, C. S.; Lithosphere Fluid Research Laboratory, Pazmany Peter Setany 1/C, Budapest, H-1117, Hungary; email: cszabo@elte.hu AB - A review of Paleogene-early Miocene igneous rocks of the Alpine-Carpathian-Pannonian-Dinaric region is presented in this paper. We attempt to reveal the geodynamic link between Paleogene-early Miocene igneous rocks of the Mid-Hungarian zone and those of the Alps and Dinarides. Our summary suggests that Paleogene-early Miocene igneous rocks of all these areas were formed along a single, subduction-related magmatic arc. The study also highlights orthopyroxene-rich websterite mantle xenoliths from west Hungary and east Serbia that were formed in the vicinity of a subducted slab. We discuss the location and polarity of all potential subduction zones of the area that may account for the igneous rocks and orthopyroxene-rich mantle rocks. However, results of seismic tomography on subducted slabs beneath the studied area combined with geological data demonstrate that igneous rocks and mantle rocks cannot be explained by the same subduction process. We propose that the Paleogene-early Miocene arc was mainly generated by the Budva-Pindos subduction zone, subordinately by Penninic subduction, whereas mantle rocks were possibly formed in the vicinity of the older Vardar subduction zone. Continental blocks possibly moved together with their mantle lithosphere. The present diverging shape of the proposed arc has been achieved by considerable shear and rotations of those lithospheric blocks. LA - English DB - MTMT ER - TY - JOUR AU - Márton Péterné Szalay, Emőke AU - Tischler, M AU - Csontos, L AU - Fügenschuh, B AU - Schmid, S M TI - The contact zone between the ALCAPA and Tisza-Dacia megatectonic units of Northern Romania in the light of new paleomagnetic data JF - ECLOGAE GEOLOGICAE HELVETIAE J2 - ECLOGAE GEOL HELV VL - 100 PY - 2007 IS - 1 SP - 109 EP - 124 PG - 16 SN - 0012-9402 DO - 10.1007/s00015-007-1205-5 UR - https://m2.mtmt.hu/api/publication/1155742 ID - 1155742 N1 - Paleomagnetic Laboratory, Eötvös Loránd Geophysical Institute of Hungary, Columbus 17-23, Budapest H-1145, Hungary Geologisch-Paläontologisches Institut, Basel University, Bernoullistr. 32, Basel CH-4056, Switzerland Physical and Historical Geology, ELTE University, Pazmany Peter setany 1/C, Budapest H-1117, Hungary Institute for Geology and Paleontology, Innsbruck University, Innrain 52f, Innsbruck A-6020, Austria Cited By :47 Export Date: 5 December 2022 Correspondence Address: Márton, E.; Paleomagnetic Laboratory, Columbus 17-23, Budapest H-1145, Hungary LA - English DB - MTMT ER - TY - JOUR AU - Vinkler, A P AU - Harangi, Szabolcs AU - Ntaflos, Th AU - Szakács, A TI - A Csomád vulkán (Keleti Kárpátok) horzsaköveinek kőzettani és geokémiai vizsgálata: petrogenetikai következtetések. JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 137 PY - 2007 IS - 1 SP - 103 EP - 128 PG - 26 SN - 0015-542X UR - https://m2.mtmt.hu/api/publication/1855030 ID - 1855030 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Wijbrans, J AU - Németh, Károly AU - Martin, U AU - Balogh, Kadosa TI - Ar-40/Ar-39 geochronology of Neogene phreatomagmatic volcanism in the western Pannonian Basin, Hungary JF - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH J2 - J VOLCANOL GEOTH RES VL - 164 PY - 2007 IS - 4 SP - 193 EP - 204 PG - 12 SN - 0377-0273 DO - 10.1016/j.jvolgeores.2007.05.009 UR - https://m2.mtmt.hu/api/publication/1384562 ID - 1384562 N1 - Összes idézések száma a WoS-ban: 0 AB - Neogene alkaline basaltic volcanic fields in the western Pannonian Basin, Hungary, including the Bakony-Balaton Highland and the Little Hungarian Plain volcanic fields are the erosional remnants of clusters of small-volume, possibly monogenetic volcanoes. Moderately to strongly eroded maars, tuff rings, scoria cones, and associated lava flows span an age range of ca. 6 Myr as previously determined by the K/Ar method. High resolution Ar-40/ Ar-39 plateau ages on 18 samples have been obtained to determine the age range for the western Pannonian Basin Neogene intracontinental volcanic province. The new Ar-40/Ar-39 age determinations confirm the previously obtained K/Ar ages in the sense that no systematic biases were found between the two data sets. However, our study also serves to illustrate the inherent advantages of the Ar-40/Ar-39 technique: greater analytical precision, and internal tests for reliability of the obtained results provide more stringent constraints on reconstructions of the magmatic evolution of the volcanic field. Periods of increased activity with multiple eruptions occurred at ca. 7.95 Ma, 4.10 Ma, 3.80 Ma and 3.00 Ma. These new results more precisely date remnants of lava lakes or flows that define geomorphological marker horizons, for which the age is significant for interpreting the erosion history of the landscape. The results also demonstrate that during short periods of more intense activity not only were new centers formed but pre-existing centers were rejuvenated. (C) 2007 Published by Elsevier B.V. LA - English DB - MTMT ER - TY - JOUR AU - Cloetingh, S AU - Bada, G AU - Matenco, L AU - Lankreijer, A AU - Horváth, Ferenc AU - Dinu, C TI - Modes of basin (de)formation, lithospheric strength and vertical motions in the Pannonian-Carpathian system: Inferences from thermo-mechanical modelling JF - MEMOIRS OF THE GEOLOGICAL SOCIETY OF LONDON J2 - MEM GEOL SOC LOND VL - 32 PY - 2006 SP - 207 EP - 221 PG - 15 SN - 0435-4052 DO - 10.1144/GSL.MEM.2006.032.01.12 UR - https://m2.mtmt.hu/api/publication/2176401 ID - 2176401 N1 - BE Stephenson, RA AB - After a rapid multiphase evolution and a transition from passive to active rifting during late Early Miocene to Pliocene times, the Pannonian Basin has been subjected to compressional stresses leading to gradual basin inversion during Quaternary times. Stress modelling demonstrates the significance of the interaction of external plate-boundary forces and the effect of gravitational stresses caused by continental topography and crustal thickness variation. Flexural modelling and fission-track studies have elucidated the complex interplay of flexural downloading during collision, followed by rapid unroofing by unflexing and isostatic rebound of the lithosphere. The stretching and subsidence history of the Pannonian Basin, the temporal and spatial evolution of the flexure of the Carpathian lithosphere, and the lithospheric strength of the region reflect a complex history of this segment of the Eurasia-Africa collision zone. The polyphase evolution of the Pannonian-Carpathian system has resulted in strong lateral and temporal variation in thermomechanical properties in the area. Modelling results suggest that, as a whole, the Pannonian Basin has been an area of pronounced lithospheric weakness since Cretaceous time, shedding light on the high degree of strain localization in this region. This basin, the hottest in continental Europe, has a lithosphere of extremely low rigidity, making it prone to multiple tectonic reactivations. Another feature is the noticeable absence of lithospheric strength in the mantle lithosphere of the Pannonian Basin. Modelling studies suggest pronounced lateral variations in lithospheric strength along the Carpathians and their foreland, which have influenced the thrust load kinematics and post-collisional tectonic history. The inferences and models discussed in this paper are constrained by a large geophysical database, including seismic profiles, gravity and heat-flow data. © The Geological Society of London 2006. LA - English DB - MTMT ER - TY - CHAP AU - Harangi, Szabolcs AU - Downes, Hilary AU - Seghedi, Ioan ED - Gee, DG ED - Stephenson, RA TI - Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region T2 - European Lithosphere Dynamics PB - Geological Society of London CY - London SN - 9781862392120 T3 - Geological Society Memoirs ; 32. PY - 2006 SP - 167 EP - 190 PG - 24 DO - 10.1144/GSL.MEM.2006.032.01.10 UR - https://m2.mtmt.hu/api/publication/1857225 ID - 1857225 N1 - Cited By :79 Export Date: 16 June 2023 Correspondence Address: Harangi, S.; Department of Petrology and Geochemistry, Pazmany Peter setany 1/C, H-1117 Budapest, Hungary; email: szabolcs.harangi@geology.elte.hu AB - During Tertiary to Quaternary times, convergence between Eurasia and Africa resulted in a variety of collisional orogens and different styles of subduction in the Alpine-Mediterranean region. Characteristic features of this area include arcuate orogenic belts and extensional basins, both of which can be explained by roll-back of subducted slabs and retreating subduction zones. After cessation of active subduction, slab detachment and post-collisional gravitational collapse of the overthickened lithosphere took place. This complex tectonic history was accompanied by the generation of a wide variety of magmas. Most of these magmas (e.g. low-K tholeiitic, calc-alkaline, shoshonitic and ultrapotassic types) have trace element and isotopic fingerprints that are commonly interpreted to reflect enrichment of their source regions by subduction-related fluids. Thus, they can be considered as 'subduction-related' magmas irrespective of their geodynamic relationships. Intraplate alkali basalts are also found in the region and generally postdated the 'subduction-related' volcanism. These mantle-derived magmas have not (or only slightly) been influenced by subduction-related enrichment. This paper summarizes the geodynamic setting of the Tertiary-Quaternary 'subduction-related' magmatism in the various segments of the Alpine-Mediterranean region (Betic-Alboran-Rif province, Central Mediterranean, the Alps, Carpathian-Pannonian region, Dinarides and Hellenides, Aegean and Western Anatolia), and discusses the main characteristics and compositional variation of the magmatic rocks. Radiogenic and stable isotope data indicate the importance of continental crustal material in the genesis of these magmas. Interaction with crustal material probably occurred both in the upper mantle during subduction ('source contamination') and in the continental crust during ascent of mantle-derived magmas (either by mixing with crustal melts or by crustal contamination). The 87Sr/86Sr and 206Pb/204Pb isotope ratios indicate that an enriched mantle component, akin to the source of intraplate alkali mafic magmas along the Alpine foreland, played a key role in the petrogenesis of the 'subduction-related' magmas of the Alpine-Mediterranean region. This enriched mantle component could be related to mantle plumes or to long-term pollution (deflection of the central Atlantic plume and recycling of crustal material during subduction) of the shallow mantle beneath Europe since the late Mesozoic. In the first case, subduction processes could have had an influence in generating asthenospheric flow by deflecting nearby mantle plumes as a result of slab roll-back or slab break-off. In the second case, the variation in the chemical composition of the volcanic rocks in the Mediterranean region can be explained by 'statistical sampling' of the strongly inhomogeneous mantle followed by variable degrees of crustal contamination. LA - English DB - MTMT ER - TY - CHAP AU - Horváth, Ferenc AU - Bada, G AU - Szafian, P AU - Tari, G AU - Ádám, Antal AU - Cloetingh, S ED - Gee, DG ED - Stephenson, RA TI - Formation; deformation of the Pannonian basin: Constraints from observational data T2 - European Lithosphere Dynamics PB - Geological Society of London CY - London SN - 9781862392120 T3 - Geological Society Memoirs ; 32. PY - 2006 SP - 191 EP - 206 PG - 16 UR - https://m2.mtmt.hu/api/publication/1857463 ID - 1857463 LA - English DB - MTMT ER - TY - JOUR AU - Horváth, Ferenc AU - Bada, G AU - Szafián, P AU - Tari, Gábor AU - Ádám, A AU - Cloetingh, S TI - Formation and deformation of the Pannonian Basin: Constraints from observational data JF - MEMOIRS OF THE GEOLOGICAL SOCIETY OF LONDON J2 - MEM GEOL SOC LOND VL - 32 PY - 2006 SP - 191 EP - 206 PG - 16 SN - 0435-4052 DO - 10.1144/GSL.MEM.2006.032.01.11 UR - https://m2.mtmt.hu/api/publication/2176402 ID - 2176402 N1 - Megjegyzés-22854802 BE Stephenson, RA AB - The past decade has witnessed spectacular progress in the collection of observational data and their interpretation in the Pannonian Basin and the surrounding Alpine, Carpathian and Dinaric mountain belts. A major driving force behind this progress was the PANCARDI project of the EUROPROBE programme. The paper reviews tectonic processes, structural styles, stratigraphic records and geochemical data for volcanic rocks. Structural and seismic sections of different scales, seismic tomography and magnetotelluric, gravity and geothermal data are also used to determine the deformational styles, and to compile new crustal and lithospheric thickness maps of the Pannonian Basin and the surrounding fold-and-thrust belts. The Pannonian Basin is superimposed on former Alpine terranes. Its formation is a result of extensional collapse of the overthickened Alpine orogenic wedge during orogen-parallel extrusion towards a 'free boundary' offered by the roll-back of the subducting Carpathian slab, As a conclusion, continental collision and back-arc basin evolution is discussed as a single, complex dynamic process, with minimization of the potential and deformational energy as the driving principle. © The Geological Society of London 2006. 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 - Trua, T AU - Serri, G AU - Birkenmajer, K AU - Pécskay, Zoltán TI - Geochemical and Sr-Nd-Pb isotopic compositions of Mts Pieniny dykes and sills (West Carpathians): Evidence for melting in the lithospheric mantle JF - LITHOS J2 - LITHOS VL - 90 PY - 2006 SP - 57 EP - 76 PG - 20 SN - 0024-4937 DO - 10.1016/j.lithos.2006.01.001 UR - https://m2.mtmt.hu/api/publication/150007 ID - 150007 N1 - ATKI2006/0016 [P19933] AB - Mineralogical, geochemical and Sr-Nd-Pb isotopic data are presented for the Middle Miocene (13.5-10.8 Ma) Mts Pieniny magmatic rocks which occur in a portion of the outermost post-collisional volcanic arc in the Carpathian orogen. The analysed rocks cover a compositional range from basaltic andesites to andesites of the medium-K calc-alkaline series. Despite their arc-like trace element signature, Pieniny rocks show unusual isotopic compositions different from the Neogene-Quaternary calc-alkaline volcanic rocks erupted in the nearby Carpathian-Pannonian region. Their Sr-87/Sr-16 (0.7053-0.7070) and Nd-143/Nd-144 (0.5121-0.5124) ratios suggest that these magmatic rocks have originated from lithospheric sources enriched in Rb with low Sm/Nd ratios. Pb isotopic compositions (Pb-206/Pb-204=18.62-18.86; Pb-207/Pb-204=15.66-15.75, Pb-208/Pb-204=38.74-39.84) are also consistent with a lithospheric origin of Picniny rocks. Sr and Nd depleted mantle model ages suggest that parental magmas of Pieniny rocks derived from a metasomatized subcontinental lithospheric mantle recording ancient (> 1.1 Ga) subduction-related enrichments. Geochemical features of Pieniny basic rocks allow an estimate of the mineralogy of their lithospheric mantle source region. The small range (from 11 up to 15) of La/Yb and the lack of significant Eu anomalies preclude the presence of residual garnet and plagioclase, respectively; the low Rb/Sr and Rb/Ba ratios as well as the range observed in Ba/Th, K/Ba and La/Yb ratios require involvement of an heterogeneous source in terms of amphibole abundance. The delamination process of the European plate that occurred in this sector of the Carpathian orogen during Middle Miocene should have favoured partial melting of metasomatized amphibole-bearing veins within the lithospheric mantle of the overriding Alcapa micro-plate, giving rise to magma genesis in the Mts Pieniny post-collisional arc segment. (c) 2006 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Fodor, László AU - Bada, G AU - Csillag, Gábor AU - Horváth, Erzsébet AU - Ruszkiczay-Rüdiger, Zsófia AU - Palotás, Klára AU - Síkhegyi, F AU - Timár, Gábor AU - Cloetingh, S AU - Horváth, Ferenc TI - An outline of neotectonic structures and morphotectonics of the western and central Pannonian Basin JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 410 PY - 2005 IS - 1-4 SP - 15 EP - 41 PG - 27 SN - 0040-1951 DO - 10.1016/j.tecto.2005.06.008 UR - https://m2.mtmt.hu/api/publication/1138137 ID - 1138137 N1 - WoS:000234403500003 típus nem egyezik WoS:hiba:000234403500003 2020-12-10 21:19 típus nem egyezik AB - Neotectonic deformation in the western and central part of the Pannonian Basin was investigated by means of surface and subsurface structural analyses, and geomorphologic observations. The applied methodology includes the study of outcrops, industrial seismic profiles, digital elevation models, topographic maps, and borehole data. Observations suggest that most of the neotectonic structures in the Pannonian Basin are related to the inverse reactivation of earlier faults formed mainly during the Miocene syn- and post-rift phases. Typical structures are folds, blind reverse faults, and transpressional strike-slip faults, although normal or oblique-normal faults are also present. These structures significantly controlled the evolution of landforms and the drainage pattern by inducing surface upwarping and river deflections. Our analyses do not support the postulated tectonic origin of some landforms, particularly that of the radial valley system in the western Pannonian Basin. The most important neotectonic strike-slip faults are trending to east-northeast and have dextral to sinistral kinematics in the south-western and central-eastern part of the studied area, respectively. The suggested along-strike change of kinematics within the same shear zones is in agreement with the fan-shaped recent stress trajectories and with the present-day motion of crustal blocks derived from GPS data. LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs AU - Mason, P R D AU - Haranginé Lukács, Réka TI - Correlation and petrogenesis of silicic pyroclastic rocks in the Northern Pannonian Basin, Eastern-Central Europe. In situ trace element data of glass shards and mineral chemical constraints TS - In situ trace element data of glass shards and mineral chemical constraints JF - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH J2 - J VOLCANOL GEOTH RES VL - 143 PY - 2005 IS - 4 SP - 237 EP - 257 PG - 21 SN - 0377-0273 DO - 10.1016/j.jvolgeores.2004.11.012 UR - https://m2.mtmt.hu/api/publication/1411923 ID - 1411923 LA - English DB - MTMT ER - TY - JOUR AU - Seghedi, I AU - Downes, H AU - Harangi, Szabolcs AU - Mason, PRD AU - Pécskay, Zoltán TI - Geochemical response of magmas to Neogene-Quaternary continental collision in the Carpathian-Pannonian region: A review JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 410 PY - 2005 IS - 1-4 SP - 485 EP - 499 PG - 15 SN - 0040-1951 DO - 10.1016/j.tecto.2004.09.015 UR - https://m2.mtmt.hu/api/publication/149679 ID - 149679 N1 - [P19064 ATKI2005/0026] AB - The Carpathian-Pannonian Region contains Neogene to Quaternary magmatic rocks of highly diverse composition (calc-alkaline, shoshonitic and mafic alkalic) that were generated in response to complex microplate tectonics including subduction followed by roll-back, collision, subducted slab break-off, rotations and extension. Major element, trace element and isotopic geochemical data of representative parental lavas and mantle xenoliths suggests that subduction components were preserved in the mantle following the cessation of subduction, and were reactivated by asthenosphere uprise via subduction roll-back, slab detachment, slab-break-off or slab-tearing. Changes in the composition of the mantle through time are evident in the geochemistry, supporting established geodynamic models. Magmatism occurred in a back-arc setting in the Western Carpathians and Pannonian Basin (Western Segment), producing felsic volcaniclastic, rocks between 21 to 18 Ma ago, followed by younger felsic and intermediate calc-alkaline lavas (18-8 Ma) and finished with alkalic-mafic basaltic volcanism (10-0.1 Ma). Volcanic rocks become younger in this segment towards the north. Geochemical data for the felsic, and calc-alkaline rocks suggest a decrease in the subduction component through time and a change in source from a crustal one, through a mixed crustal/mantle source to a mantle source. Block rotation, subducted roll-back and continental collision triggered partial melting by either delamination and/or asthenosphere upwelling that also generated the younger alkalic-mafic magmatism. In the westernmost East Carpathians (Central Segment) calc-alkaline volcanism was simultaneously spread across ca. 100 km in several lineaments, parallel or perpendicular to the plane of continental collision, from 15 to 9 Ma. Geochemical studies indicate a heterogeneous mantle toward the back-arc with a larger degree of fluid-induced metasomatism, source enrichment and assimilation on moving north-eastward toward the presumed trench. Subduction-related roll-back may have triggered melting, although there may have been a role for back-arc extension and asthenosphere uprise related to slab break-off. Calc-alkaline and adakite-like magmas were erupted in the Apuseni Mountains volcanic area (Interior Segment) from 15-9 Ma, without any apparent relationship with the coeval roll-back processes in the front of the orogen. Magmatic activity ended with OIB-like alkali basaltic (2.5 Ma) and shoshonitic magmatism (1.6 Ma). Lithosphere breakup may have been an important process during extreme block rotations (similar to 60 degrees) between 14 and 12 Ma, leading to decompressional melting of the lithospheric and asthenospheric sources. Eruption of alkali basalts suggests decompressional melting of an OIB-source asthenosphere. Mixing of asthenospheric melts with melts from the metasomatized lithosphere along an east-west reactivated fault-system could be responsible for the generation of shoshonitic magmas during transtension and attenuation of the lithosphere. Voluminous calc-alkaline magmatism occurred in the Calimani-Gurghiu-Harghita volcanic area (South-eastern Segment) between 10 and 3.5 Ma. Activity continued south-eastwards into the South Harghita area, in which activity started (ca. 3.0-0.03 Ma, with contemporaneous eruption of calc-alkaline (some with adakite-like characteristics), shoshonitic and alkali basaltic magmas from 2 to 0.3 Ma. Along arc magma generation was related to progressive break-off of the subducted slab and asthenosphere uprise. For South Harghita, decompressional melting of an OIB-like asthenospheric mantle (producing alkali basalt magmas) coupled with fluid-dominated melting close to the subducted slab (generating adakite-like magmas) and mixing between slab-derived melts and asthenospheric melts (generating shoshonites) is suggested. Break-off and tearing of the subducted slab at shallow levels required explaining this situation. (c) 2005 Elsevier B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Cvetkovic, V AU - Prelevic, D AU - Downes, H AU - Jovanovic, M AU - Vaselli, O AU - Pécskay, Zoltán TI - Origin and geodynamic significance of Tertiary postcollisional basaltic magmatism in Serbia (central Balkan Peninsula) JF - LITHOS J2 - LITHOS VL - 73 PY - 2004 SP - 161 EP - 186 PG - 26 SN - 0024-4937 DO - 10.1016/j.lithos.2003.12.004 UR - https://m2.mtmt.hu/api/publication/149410 ID - 149410 N1 - [P17444] AB - Tertiary basaltic magmatism in Serbia occurred through three episodes: (i) Paleocene/Eocene, when mostly east Serbian mafic alkaline rocks (ESPEMAR) formed, (ii) Oligocene/Miocene, dominated by high-K calc-alkaline basalts, shoshonites (HKCA-SHO) and ultrapotassic (UP) rocks, and (iii) Pliocene episode when rocks similar to (ii) originated. In this study, the geodynamics inferred from petrogenesis of the (i) and (ii) episodes are discussed. The ESPEMAR (62-39 Ma) occur mainly as mantle xenolith-bearing basanites. Their geochemical features, such as the REE patterns, elevated HFSE contents and depleted Sr-Nd isotope signatures, indicate a relatively small degree of melting of an isotopically depleted mantle source. Their mantle-normalized trace element patterns are flat to concave and "bell-shaped", characteristic of an OIB source free of subduction component. Sr-87/Sr-86(i) and Nd-143/Nd-144(i) isotope ratios (0.7030-0.7047 and 0.5127-0.5129, respectively) indicate a depleted source for the ESPEMAR similar to the European Asthenospheric Reservoir (EAR). The HKCA-SHO rocks (30-21 Ma) occur as basalts, basaltic andesites and trachyandesites. They show enrichment in LILE and depletion in HFSE with all the distinctive features of calc-alkaline are-type magniatism. This is coupled with somewhat enriched Sr-Nd isotope signature (Sr-87/Sr-86(i) = 0.7047-0.7064, Nd-143/Nd-144(i) = 0.5124-0.5126). All these features are characteristic of subduction-related metasomatism and fluxing of the HKCA-SHO mantle source with fluids/melts released from subducted sedimentary material. UP rocks (35-21 Ma) appear as (i) Si-rich lamproites and related rocks and (ii) olivine leucitites and related rocks. UP rocks have high-LILE/HFSE ratios with enrichment for some LILE around 1000 x primitive mantle, troughs at Nb and Ti, and peaks of Pb in their mantle-normalized patterns. They also show highly fractionated REE patterns (La/Yb up to 27, La-N up to 400). The isotopic ratios approach crustal values (Sr-87/Sr-86(i) =0.7059-0.7115 and Nd-143/Nd-144(i) = 0.5122-0.5126), and that signature is typical for ultrapotassic rocks worldwide. The Paleocene/Eocene episode and formation of the ESPEMAR is referred to as asthenospheric-derived magmatism. This magmatism originated through passive riftlike structures related to possible short relaxational phases during predominantly collisional and compressional conditions. The Oligocene/Miocene episode and formation of HKCA-SHO and UP rocks were dominated by lithospheric-controlled magmatism. Its origin is connected with the activity of a wide dextral wrench corridor generated along the axis of the Dinaride orogen which collapsed in response to thickened crust caused by earlier compressional processes. To explain conditions of these two magmatic events, a three-stage geodynamic model has been proposed: (1) subduction termination/collision stage (Palcocene/Eocene), (2) collision stage (Eocene) and (3) postcollision/collapse stage (Oligocene/ early Miocene). (C) 2004 Elsevier B.V. All rights reserved. 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 - Póka, Teréz AU - Zelenka, T AU - Seghedi, I AU - Pécskay, Zoltán AU - Márton Péterné Szalay, Emőke TI - Miocene volcanism of the Cserhát Mts. (N. Hungary): Integrated volcano-tectonic, geochronologic and pertochemical study. JF - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES J2 - ACTA GEOL HUNG VL - 47 PY - 2004 IS - 2-3 SP - 221 EP - 246 PG - 26 SN - 0236-5278 DO - 10.1556/ageol.47.2004.2-3.7 UR - https://m2.mtmt.hu/api/publication/1155444 ID - 1155444 N1 - Cited By :19 Export Date: 29 July 2024 Correspondence Address: Póka, T.; Laboratory for Geochemical Research, Budaörsi út 45, H-1112 Budapest, Hungary; email: poka@geochem.hu LA - English DB - MTMT ER - TY - JOUR AU - Rosu, E AU - Seghedi, I AU - Downes, H AU - Alderton, DHM AU - Szakács, A AU - Pécskay, Zoltán AU - Panaiotu, C AU - Panaiotu, CE AU - Nedelcu, L TI - Extension-related Miocene calc-alkaline magmatism in the Apuseni Mountains, Romania: Origin of magmas JF - SCHWEIZERISCHE MINERALOGISCHE UND PETROGRAPHISCHE MITTEILUNGEN J2 - SCHWEIZ MINER PETROG VL - 84 PY - 2004 SP - 153 EP - 172 PG - 20 SN - 0036-7699 UR - https://m2.mtmt.hu/api/publication/149304 ID - 149304 N1 - [P19065 ATKI2004/0002] Megjegyzés-24076663 : Ioan/0000-0001-7381-7802 Megjegyzés-23316068 : Ioan/0000-0001-7381-7802 AB - The Miocene magmatism of the Apuseni Mountains in the Carpatho-Parmonian area hosts some of Europe's largest porphyry epithermal Cu-Au ore systems associated with shallow subvolcanic intrusions. Detailed field observations combined with K-Ar ages, geochemical analyses, Sr-Nd isotopes and paleomagnetic data constrain a model for the geotectonic evolution and processes of melt generation that may account for the exceptional mineralizing potential of the magmatic activity in this region. The magmatic activity developed mainly between 14.7 and 7.4 Ma and after a gap ceased at around 1.6 Ma. Geotectonic conditions do not support contemporaneous subduction processes, but were represented by transtensional and rotational tectonics, which generated horst and graben structures and favoured the generation and ascent of magmas. The "subduction signature" of the magmas emphasizes the significant involvement of fluids (mantle lithosphere and/or lower crust) inherited during previous geodynamic events. The mechanism of magmagenesis is considered to be related to decompressional melting (various degrees of) of a heterogeneous source situated at the crust-lithosphere mantle boundary. Mixing with asthenospheric melts generated during the extension-related attenuation of the lithosphere may also be implied. The evolution from normal to adakitic-like calc-alkaline and alkaline magmas generally is time-dependent as a consequence of variable fluid-present melting. Fractional crystallization-assimilation processes in shallow magma chambers are suggested for early magmatism but were almost absent from later magmatism, which related to an increasingly extensional regime. The youngest alkalic (shoshonitic) magmatism (1.6 Ma) is asthenosphere-derived, but in a different extensional event, being almost coeval with the OIB-like alkali-basaltic magmatism (2.5 Ma) occurring along the South Transylvanian fault. The fluid-present melting of the source seems to be the critical factor for the presence of the copper-gold-bearing mineralizing fluids. LA - English DB - MTMT ER - TY - JOUR AU - Seghedi, I AU - Downes, H AU - Szakács, A AU - Mason, P R D AU - Thirlwall, M F AU - Roşu, E AU - Pécskay, Zoltán AU - Márton Péterné Szalay, Emőke AU - Panaiotu, C TI - Neogene–Quaternary magmatism and geodynamics in the Carpatho–Pannonian region: a synthesis. JF - LITHOS J2 - LITHOS VL - 72 PY - 2004 SP - 114 EP - 146 PG - 33 SN - 0024-4937 DO - 10.1016/j.lithos.2003.08.006 UR - https://m2.mtmt.hu/api/publication/1155445 ID - 1155445 N1 - Megjegyzés-25738622 Megjegyzés-24076662 : Ioan/0000-0001-7381-7802 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 - Dunkl, István AU - Frisch, W AU - Grundmann, G TI - Zircon fission track thermochronology of the southeastern part of the Tauern Window and the adjacent Austroalpine margin, Eastern Alps JF - ECLOGAE GEOLOGICAE HELVETIAE J2 - ECLOGAE GEOL HELV VL - 96 PY - 2003 IS - 2 SP - 209 EP - 217 PG - 9 SN - 0012-9402 DO - 10.1007/s00015-003-1092-3 UR - https://m2.mtmt.hu/api/publication/10153847 ID - 10153847 LA - English DB - MTMT ER - TY - JOUR AU - Márton Péterné Szalay, Emőke AU - Fodor, László TI - Tertiary paleomagnetic results and structural analysis from the Transdanubian Range (Hungary); sign for rotational disintegration of the Alcapa unit. JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 363 PY - 2003 IS - 3-4 SP - 201 EP - 224 PG - 24 SN - 0040-1951 DO - 10.1016/S0040-1951(02)00672-8 UR - https://m2.mtmt.hu/api/publication/1155437 ID - 1155437 N1 - WoS:hiba:000182291100003 2020-09-04 06:44 füzet nem egyezik 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 magmatism in the Alpine-Pannonian Transition Zone - a model for melt generation in a complex geodynamic setting. JF - ACTA VULCANOLOGICA J2 - ACTA VULCANOL VL - 13 PY - 2001 IS - 1 SP - 25 EP - 39 PG - 15 SN - 1121-9114 UR - https://m2.mtmt.hu/api/publication/1855096 ID - 1855096 LA - English DB - MTMT ER - TY - JOUR AU - Seghedi, L AU - Downes, H AU - Pécskay, Zoltán AU - Thirlwall, MF AU - Szakacs, A AU - Prychodko, M AU - Mattey, D TI - Magmagenesis in a subduction-related post-collisional volcanic arc segment: the Ukrainian Carpathians JF - LITHOS J2 - LITHOS VL - 57 PY - 2001 IS - 4 SP - 237 EP - 262 PG - 26 SN - 0024-4937 DO - 10.1016/S0024-4937(01)00042-1 UR - https://m2.mtmt.hu/api/publication/1748467 ID - 1748467 AB - Calc-alkaline magmatism in the south-west Ukraine occurred between 13.8 and 9.1 Ma and formed an integral part of the Neogene subduction-related post-collisional Carpathian volcanic arc. Eruptions occurred contemporaneously in two parallel arcs (here termed Outer Arc and Inner Arc) in the Ukrainian part of the Carpathians. Outer Arc rocks, mainly andesites, are characterized by LILE enrichment (e.g. K and Pb), Nb depletion, low compatible trace element abundances, high Sr-87/Sr-86, high delta O-18 and low Nd-143/Nd-144 isotopic ratios (0.7085-0.7095, 7.01-8.53, 0.51230-0.51245, respectively). Inner Arc rocks are mostly dacites and rhyolites with some basaltic and andesitic lavas. They also show low compatible element abundances but have lower Sr-87/Sr-86, delta O-18 and higher Nd-143/Nd-144 ratios (0.7060-0.7085, 6.15-6.64, 0.5125-0.5126, respectively) than Outer Arc rocks. Both high-Nb and low-Nb lithologies are present in the Inner Arc. Based on the LILE enrichment (especially Pb), a higher fluid flux is suggested for the Outer Arc magmas compared with those of the Inner Arc. Combined trace element and Sr-Nd-O isotopic modelling suggests that the factors which controlled the generation and evolution of magmas were complex. Compositional differences between the Inner and Outer Arcs were produced by introduction of variable proportions of slab-derived sediments and fluids into a heterogeneous mantle wedge, and by different extents of upper crustal contamination. Degrees of magmatic fractionation also differed between the two arcs. The most primitive magmas belong to the Inner Arc. Isotopic modelling shows that they can be produced by adding 3-8% subducted terrigenous flysch sediments to the local mantle wedge source. Up to 5% upper crustal contamination has been modelled for fractionated products of the Inner Arc. The geochemical features of Outer Arc rocks suggest that they were generated from mantle wedge melts similar to the Inner Are primitive magmas, but were strongly affected by both source enrichment and upper crustal contamination. Assimilation of 10-20% bulk upper crust is required in the AFC modelling, assuming an Inner Are parental magma. We suggest that magmagenesis is closely related to the complex geotectonic evolution of the Carpathian area. Several tectonic and kinematic factors are significant: (1) hydration of the asthenosphere during subduction and plate rollback directly related to collisional processes, (2) thermal disturbance caused by ascent of hot asthenospheric mantle during the back-arc opening of the Pannonian Basin (3) clockwise translational movements of the Intracarpathian terranes, which facilitated eruption of the magmas. (C) 2001 Elsevier Science B.V. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Falus, György AU - Szabó, Csaba AU - Vaselli, O TI - Mantle upwelling within the Pannonian Basin: evidence from xenolith lithology and mineral chemistry JF - TERRA NOVA J2 - TERRA NOVA VL - 12 PY - 2000 IS - 6 SP - 295 EP - 302 PG - 8 SN - 0954-4879 DO - 10.1046/j.1365-3121.2000.00313.x UR - https://m2.mtmt.hu/api/publication/1885098 ID - 1885098 N1 - Department of Petrology and Geochemistry, Eötvös University, Múzeum krt. 4/a, Budapest, Hungary Department of Earth Sciences, University of Florence, Italy Cited By :37 Export Date: 7 October 2022 Correspondence Address: Falus, G.; Department of Petrology/Geochemistry, Eötvös University, Múzeum krt. 4/a, Budapest, Hungary; email: fagyu@ludens.elte.hu AB - Five spinel lherzolite xenoliths hosted in Neogene alkali basalts from the marginal parts of the Pannonian Basin (Styrian Basin in Austria and Persani Mts. in the Eastern Transylvanian Basin, Romania) contain orthopyroxene-clinopyroxene-spinel clusters, which are believed to represent former garnet in lherzolitic mantle material. 'Palaeo' equilibrium pressure of this former garnet lherzolite was estimated to be equivalent to depths of 90-120 km using calculated garnet compositions and measured orthopyroxene compositions from the clusters. 'Neo' equilibrium pressures of the xenoliths indicate depths of 55-65 km, suggesting c. 50-60 km uprise of the mantle section represented by these xenoliths. This petrological result confirms the observations from previous geophysical studies that significant mantle uplift has occurred beneath the Pannonian Basin. LA - English DB - MTMT ER - TY - JOUR AU - Márton Péterné Szalay, Emőke AU - Kuhlemann, J AU - Frisch, W AU - Dunkl, István TI - Miocene rotations in the Eastern Alps - Paleomagnetic results from intramontane basin sediments JF - TECTONOPHYSICS J2 - TECTONOPHYSICS VL - 323 PY - 2000 SP - 163 EP - 182 PG - 20 SN - 0040-1951 DO - 10.1016/S0040-1951(00)00102-5 UR - https://m2.mtmt.hu/api/publication/1155193 ID - 1155193 LA - English DB - MTMT ER - TY - CHAP AU - Fodor, László AU - Csontos, L AU - Bada, G AU - Györfi, I AU - Benkovics, L ED - Durand, B ED - Jolivet, L ED - Horváth, Ferenc ED - Seranne, M TI - Tertiary tectonic evolution of the Pannonian Basin system and neighbouring orogens: a new synthesis of palaeostress data T2 - The Mediterranean Basins: tertiary extension within the Alpine Orogen PB - Geological Society of London CY - London SN - 9781862390331 T3 - Geological Society Special Publication, ISSN 0305-8719 ; 156. PY - 1999 SP - 295 EP - 334 PG - 40 DO - 10.1144/GSL.SP.1999.156.01.15 UR - https://m2.mtmt.hu/api/publication/1369059 ID - 1369059 N1 - Dept. of Appl. and Environ. Geology, Eötvös University, 1088 Múzeum krt 4/a, Budapest, Hungary Dept. of Gen. and Historical Geology, Eötvös University, 1088 Múzeum krt 4/a, Budapest, Hungary Department of Geophysics, Eötvös University, 1085 Ludovika tér 2, Budapest, Hungary Department of Engineering Geology, Technical University of Budapest, Stoczek u. 2, Budapest, Hungary Cited By :375 Export Date: 10 May 2023 Correspondence Address: Fodor, L.; Dept. of App. + Envtml. Geol., Muzeum krt 4/a, Budapest 1088, Hungary LA - English DB - MTMT ER - TY - JOUR AU - Tari, Gábor AU - Dövényi, Péter AU - Dunkl, István AU - Horváth, Ferenc AU - Lenkey, László AU - Szafian, P AU - Toth, T TI - Lithospheric structure of the Pannonian basin derived from seismic, gravity and geothermal data JF - GEOLOGICAL SOCIETY SPECIAL PUBLICATIONS J2 - GEOL SOC SPEC PUBL VL - 156 PY - 1999 SP - 215 EP - 250 PG - 36 SN - 0305-8719 DO - 10.1144/GSL.SP.1999.156.01.12 UR - https://m2.mtmt.hu/api/publication/1256307 ID - 1256307 AB - This paper is part of the special publication No.156, The Mediterranean basins: Tertiary extension within the Alpine Orogen. (eds B.Durand, L. Jolivet, F.Horvath and M.Seranne). The structure of the Pannonian basin is the result of distinct modes of Mid-Late Miocene extension exerting a profound effect on the lithospheric configuration, which continues even today. As the first manifestation of extensional collapse, large magnitude, metamorphic core complex style extension took place at the beginning of the Mid-Miocene in certain parts of the basin. Extrapolation of the present-day high heat flow in the basin, corrected for the blanketing effect of the basin fill, indicates a hot and thin lithosphere at the onset of extension. This initial condition, combined with the relatively thick crust inherited from earlier Alpine compressional episodes, appears to be responsible for the core complex type extension at the beginning of the syn-rift period. This type of extension is well documented in the northwestern Pannonian basin. Newly obtained deep reflection seismic and fission-track data integrated with well data from the southeastern part of the basin suggests that it developed in a similar fashion. Shortly after the initial period, the style of syn-rift extension changed to a wide-rift style, covering an area of much larger geographic extent. The associated normal faults revealed by industry reflection seismic data tend to dominate within the upper crust, obscuring pre-existing structures. However, several deep seismic profiles, constrained by gravity and geothermal modeling, image the entire lithosphere beneath the basin. It is the Mid-Miocene synrift extension which is still reflected in the structure of the Pannonian lithosphere, on the scale of the whole basin system. The gradually diminishing extension during the Late Miocene/Pliocene could not advance to the localization of extension into narrow rift zones in the Pannonian region except some deep subbasins such as the Mako/Bekes and Danube basins. These basins are underlain coincidently by anomalously thin crust (22-25 km) and lithosphere (45-60 km). Significant departures (up to 130 mW m -2) from the average present-day surface heat flow for the initiation of two newly defined narrow rift zones (Tisza and Duna) in the Pannonian basin system. However, both of these narrow rifts failed since the final docking of the Eastern Carpathians onto the European foreland excluded any further extension of the back-arc region. 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 - DOWNES, H AU - SEGHEDI, I AU - SZAKACS, A AU - Dobosi, Gábor AU - JAMES, DE AU - VASELLI, O AU - RIGBY, IJ AU - INGRAM, GA AU - REX, D AU - Pécskay, Zoltán TI - PETROLOGY AND GEOCHEMISTRY OF LATE TERTIARY QUATERNARY MAFIC ALKALINE VOLCANISM IN ROMANIA JF - LITHOS J2 - LITHOS VL - 35 PY - 1995 IS - 1-2 SP - 65 EP - 81 PG - 17 SN - 0024-4937 DO - 10.1016/0024-4937(95)91152-Y UR - https://m2.mtmt.hu/api/publication/1124684 ID - 1124684 AB - Alkaline volcanic activity occurred in the Persani Mountains (eastern Transylvanian Basin) and Banat (eastern Pannonian Basin) regions of Romania between 2.5 Ma and 0.7 Ma. This volcanism followed an extended period of subduction-related mostly andesitic and dacitic magmatism in the Eastern Carpathian are. The Persani Mts. alkaline activity coincided with the last phase of subduction-related activity. Several lava flows and pyroclastic deposits in the Persani Mts. carry peridotitic mantle xenoliths and amphibole megacrysts. Major- and trace-element geochemistry indicates that the alkaline magmas are primitive, silica-undersaturated alkali basalts and trachybasalts (7.8-12.3 wt.% MgO; 119-207 ppm Ni; 210-488 ppm Cr) which are LREE-enriched. Mantle-normalised trace-element diagrams reveal an overall similarity to continental intraplate alkali basalts, but when compared with a global average of ocean island basalts (GIB), the Banat lavas are similar to average GIB, whereas the Persani Mts. basalts have higher Rb, Ba, K and Pb and lower Nb, Zr and Ti. These features slightly resemble those of subduction-related magmas, particularly those of a basaltic andesite related to the nearby older are magmas. With Sr-87/Sr-86 varying from 0.7035-0.7045 and Nd-143/Nd-144 from 0.51273-0.51289, the Romanian alkali basalts are indistinguishable from those of the western Pannonian basin (Hungary and Austria) and Neogene alkali basalts throughout Europe. Amphibole megacrysts have similar isotopic signatures, and their REE patterns indicate derivation by crystallisation from a mafic alkaline magma. The age-corrected Sr and Nd isotopic compositions of a calc-alkaline basaltic andesite related to the preceeding period of subduction also lies within the field of the younger alkaline magmas. Pb isotopic ratios of the Romanian alkali basalts do not lie on the NHRL, but overlap the field of Tertiary alkali basalts from the western Pannonian basin, and have unusually high Pb-207/Pb-204 at a given Pb-206/Pb-204. Thus it is probable that, although the Romanian alkali basalts have a strong asthenospheric (i.e. OIB-type mantle source) component, their Pb isotopic characteristics were derived from mantle which was affected by the earlier subduction. LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs AU - Vaselli, O AU - Tonarini, S AU - Szabó, Csaba AU - Harangi, R AU - Coradossi, N TI - Petrogenesis of Neogene extension-related alkaline volcanic rocks of the Little Hungarian Plain Volcanic Field (Western Hungary). JF - ACTA VULCANOLOGICA J2 - ACTA VULCANOL VL - 7 PY - 1995 IS - 2 SP - 173 EP - 187 PG - 15 SN - 1121-9114 UR - https://m2.mtmt.hu/api/publication/1859730 ID - 1859730 LA - English DB - MTMT ER - TY - JOUR AU - Harangi, Szabolcs AU - Wilson, M AU - Tonarini, S TI - Petrogenesis of Neogene potassic volcanic rocks in the Pannonian Basin. JF - ACTA VULCANOLOGICA J2 - ACTA VULCANOL VL - 7 PY - 1995 IS - 2 SP - 125 EP - 134 PG - 10 SN - 1121-9114 UR - https://m2.mtmt.hu/api/publication/1859725 ID - 1859725 LA - English DB - MTMT ER - TY - JOUR AU - Pécskay, Zoltán AU - Lexa, J AU - Szakács, A AU - Balogh, Kadosa AU - Seghedi, I AU - Konecny, V AU - Kovács, M AU - Márton Péterné Szalay, Emőke AU - Kaliciak, M AU - Széky-Fux, V AU - Póka, Teréz AU - Gyarmati, P AU - Edelstein, O AU - Rosu, E AU - Zec, B TI - Space and time distribution of Neogene - Quaternary volcanism in the Carpatho - Pannonian region. JF - ACTA VULCANOLOGICA J2 - ACTA VULCANOL VL - 7 PY - 1995 IS - 2 SP - 15 EP - 28 PG - 14 SN - 1121-9114 UR - https://m2.mtmt.hu/api/publication/1155132 ID - 1155132 LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Csaba AU - Vaselli, O AU - Vannucci, R AU - Botazzi, P AU - Ottolini, L AU - Coradossi, N AU - Kubovics, Imre TI - Ultramafic xenoliths from the Little Hungarian Plain: a petrologic and geochemical study, in Downes, H. & Vaselli, O. (eds.) Neogene and Related Magmatism in the Carpatho-Pannonian Region JF - ACTA VULCANOLOGICA J2 - ACTA VULCANOL VL - 7 PY - 1995 SP - 249 EP - 263 PG - 15 SN - 1121-9114 UR - https://m2.mtmt.hu/api/publication/1883710 ID - 1883710 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 - 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 - CHAP AU - Póka, Teréz ED - Royden, LH ED - Horváth, Ferenc TI - Neogene and Quaternary Volcanism on the Carpathian-Pannonian Region: Changes in Chemical Composition and Its Relationship to Basin Formation T2 - The Pannonian Basin: A Study in Basin Evolution/Book and Maps PB - American Association of Petroleum Geologists (AAPG) CY - Tulsa (OK) SN - 9780891813224 T3 - AAPG Memoir, ISSN 0271-8529 ; 45. PY - 1988 SP - 257 EP - 277 PG - 21 UR - https://m2.mtmt.hu/api/publication/1826946 ID - 1826946 LA - English DB - MTMT ER -