TY  - JOUR
AU  - Zelenka, Tibor
AU  - Gyarmati, Pál
AU  - Kiss, János
TI  - Paleovolcanic reconstruction in the Tokaj Mountains
JF  - CENTRAL EUROPEAN GEOLOGY
J2  - CENT EUR GEOL
VL  - 55
PY  - 2012
IS  - 1
SP  - 49
EP  - 84
PG  - 36
SN  - 1788-2281
DO  - 10.1556/CEuGeol.55.2012.1.4
UR  - https://m2.mtmt.hu/api/publication/2170258
ID  - 2170258
AB  - The Tokaj Mts, situated in the northeastern part of the inner 
arc of the Carpathians, forms a part of
a Miocene calc-alkaline andesitic-dacitic-rhyolitic volcanic 
island arc. The ancient volcanic structures
were reconstructed on the basis of the 1:50 000-scale and 22 
sheets of the 1:25 000-scale geologicpetrologic
maps, as well as the revision of the volcanic facies in 150 
boreholes. Multispectral and SAR
satellite imagery, aerial photos, data and maps of airborne 
geophysical surveys (magnetic and
radiometric), gravity-filtered anomaly maps, geochemical (soil 
and stream sediment Au, As, Sb, Hg)
concentration distribution maps and the K/Ar dating of 132 
samples from 80 paleomagnetic
measurements were also used.
The anomalies were only taken into consideration in the 
interpretation if the coincident results of
at least 3 methods indicated the presence of any volcanic 
structure. In consequence, 91 map-scale
volcanic structures were identified by morphology - complex 
calderas, single lava domes, volcanic
fissures, subvolcanic intrusions, diatremes, stratovolcanoes and 
postvolcanic formations. Conclusions
were also drawn regarding the link to the volcanic structures 
and prospective occurrences of the
mineral resources of the Tokaj Mts: andesite, dacite, welded 
zeolitic tuff, K-metasomatite, perlite,
pitchstone, pumice, bentonitic, illitic, kaolinitic, diatom-
bearing and silicified lacustrine sediments,
hydrothermal Au-Ag and Pb-Zn veins, and Hg stockwerks.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Kereszturi, G
AU  - Németh, Károly
AU  - Csillag, Gábor
AU  - Balogh, Kadosa
AU  - Kovács, János
TI  - The role of external environmental factors in changing eruption styles of monogenetic volcanoes in a Mio/Pleistocene continental volcanic field in western Hungary
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 201
PY  - 2011
IS  - 1-4
SP  - 227
EP  - 240
PG  - 14
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2010.08.018
UR  - https://m2.mtmt.hu/api/publication/1506102
ID  - 1506102
N1  - Megjegyzés-21383737
3rd International Maar Conference (3IMC) Location: Malargue, ARGENTINA Date: APR 14-17, 2009
Megjegyzés-21630188
: FN Thomson Reuters Web of Knowledge
WC: Geosciences, Multidisciplinary
AB  - The occurrence, shape, structure and eruption style of monogenetic volcanoes, such as maars, tuff rings, tuff cones and scoria cones, are generally governed by several internal (composition of the magma, magmatic flux, ascent rate, viscosity, volatile contents) and external conditions (regional and local tectonics, topography, and the presence of surfacial, ground and meteoric water). These controlling factors are together responsible for the eruption style, distribution pattern, volcanic facies architecture and morphology of the monogenetic volcanic landforms. The Late Miocene to Pleistocene Bakony-Balaton Highland Volcanic Field (BBHVF) in western Hungary is a typical small sized (< 50 eruption centres), basaltic, intraplate "monogenetic" volcanic field. Generally, initial eruptions of the BBHVF were phreatomagmatic (n = ~. 28); however, a lesser number (n = ~. 14) of predominantly scoria cone forming eruptions are also inferred. The temporal distribution of the Strombolian style scoria cones was concentrated mostly between 3 and 2.5. Ma. A detailed study of the changes in eruption styles recorded in the pyroclastic sequences suggested a change from a conventional phreatomagmatic to a magmatic fragmentation style during the activity of the volcanic field. A clear correlation has been identified between the long-term environmental changes of the region that resulted in a gradual shift from a more phreatomagmatic eruption style to a more magmatic eruption style. Detailed examination of the temporal distribution of K-Ar and Ar-Ar radiometric data, Digital Elevation Model and Dense Rock Equivalent-based volume calculations of eruptive products and origin of pyroclastic rocks (e.g. phreatomagmatic or magmatic) preserved in variously eroded monogenetic volcanoes were utilized to integrate available volcanological and climatological data to identify potential links between external and internal controlling parameters that responsible for long-term eruption style changes. At least 6 volcanic cycles have been identified by cluster analysis. Time gap between the cycles were vary from 1.66 up to 0.06Ma, while the average eruption recurrence rate was ~0.1078Ma/event. The time-volume diagram of the volcanism of BBHVF have shown time-predictive behavior combined with low magma-flux (total preserved volume ~2.867km3) and output rates (0.53km3/Ma for the entire volcanic field and 0.90km3/Ma for the last 5cycles), suggesting that volcanism was largely tectonically-controlled and not magmatically-controlled.Furthermore, the topographic differences between the northern ("elevated") and southern ("basin-like") parts of the volcanic field, are also important in local differences in dominant fragmentation style, because the elevated part of the field was prone to host large, more magmatically-evolved volcanoes, than on the lower, water-saturated, unconsolidated sediments, which favored to the magma/water interaction driven phreatomagmatic fragmentation. The third controlling parameter, which seems to play an important role in controlling the eruptive style of monogenetic volcanism at BBHVF, was the paleoclimate fluctuation, especially during the time interval of 3.0 to 2.5. Ma. Thus, mainly the long-term environmental changes (e.g. aridification) have been response the shifting fragmentation style from phreatomagmatic to more magmatic ones. © 2010 Elsevier B.V.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Balogh, Kadosa
AU  - Németh, Károly
AU  - Itaya, T
AU  - Molnár, Ferenc
AU  - Stewart, R
AU  - Thanh, N
AU  - Hyodo, H
AU  - Daróczi, Lajos
TI  - Loss of 40Ar(rad) from leucite-bearing basanite at low temperature: Implications on K/Ar dating
JF  - CENTRAL EUROPEAN JOURNAL OF GEOSCIENCES
J2  - CENT EUR J GEOSCI
VL  - 2
PY  - 2010
IS  - 3
SP  - 385
EP  - 398
PG  - 14
SN  - 2081-9900
DO  - 10.2478/v10085-010-0026-3
UR  - https://m2.mtmt.hu/api/publication/1384575
ID  - 1384575
N1  - P22992
ATKI2010/0024
Megjegyzés-22005389
: 40Ar(rad) from leucite-bearing basanite at low temperature: Implications on K/Ar dating
AB  - The Bakony-Balaton Highland Volcanic Field (BBHVF) is located in the central part of Transdanubia, Pannonian Basin, with over 50 alkali basaltic volcanoes. The basanite plug of Hegyestu erupted in the first phase of volcanic activity. K/Ar and Ar/Ar ages were published for the BBHVF. K/Ar and Ar/Ar ages of the leucite-bearing basanite of Hegyestu were conflicting. This is caused by the special Ar retention feature of leucite in this basanite.K/Ar ages measured in the usual way were 25-45% younger, but after HCl treatment of the rock, or after reducing the baking temperature of the argon extraction line from 250°C to 150°C, they became similar to the Ar/Ar ages. All Ar/Ar determinations were performed after HF treatment.HCl treatment dissolved olivine, nepheline, leucite, magnetite and from 1-1 sample analcime or calcite. K dissolution studies from different locations of Hegyestu have shown that K content is mostly ~2%, but it may decrease to ~0.3%. HCl treatment dissolved 28.0-63.5% of the K content. The calculated K concentration for the dissolved part of samples with ~2%K was 4.02-6.42%: showing that leucite is responsible for the low temperature loss of <sup>40</sup>Ar(rad).Ar may release at low temperature from very fine-grained mineral, or when the Ar release mechanism changes. A <sup>40</sup>Ar(rad) degassing spectrum has been recorded in the 55-295°C range of baking temperature and the data were plotted in the Arrhenius diagram. The diagram shows that a change of the structure in the 145-295°C range caused the loss of <sup>40</sup>Ar(rad). On fractions of HCl treated rock 7.56±0.17 Ma isochron K/Ar age has been determined. This is regarded as minimum age of eruption and it is similar to the Ar/Ar isochron age (7.78±0.07 Ma).
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Kereszturi, G
AU  - Csillag, Gábor
AU  - Németh, Károly
AU  - Sebe, Krisztina
AU  - Balogh, Kadosa
AU  - Jáger, Viktor
TI  - Volcanic architecture, eruption mechanism and landform evolution of a Plio/Pleistocene intracontinental basaltic polycyclic monogenetic volcano from the Bakony-Balaton Highland Volcanic Field, Hungary
JF  - CENTRAL EUROPEAN JOURNAL OF GEOSCIENCES
J2  - CENT EUR J GEOSCI
VL  - 2
PY  - 2010
IS  - 3
SP  - 362
EP  - 384
PG  - 23
SN  - 2081-9900
DO  - 10.2478/v10085-010-0019-2
UR  - https://m2.mtmt.hu/api/publication/1384578
ID  - 1384578
N1  - P23149
ATKI2010/0028
AB  - Bondoró Volcanic Complex (shortly Bondoró) is one of the most complex eruption centre of Bakony-Balaton Highland Volcanic Field, which made up from basaltic pyroclastics sequences, a capping confined lava field (~4 km 2) and an additional scoria cone. Here we document and describe the main evolutional phases of the Bondoró on the basis of facies analysis, drill core descriptions and geomorphic studies and provide a general model for this complex monogenetic volcano. Based on the distinguished 13 individual volcanic facies, we infer that the eruption history of Bondoró contained several stages including initial phreatomagmatic eruptions, Strombolian-type scoria cones forming as well as effusive phases. The existing and newly obtained K-Ar radiometric data have confirmed that the entire formation of the Bondoró volcano finished at about 2.3 Ma ago, and the time of its onset cannot be older than 3.8 Ma. Still K-Ar ages on neighbouring formations (e.g. Kab-hegy, Agár-teto) do not exclude a long-lasting eruptive period with multiple eruptions and potential rejuvenation of volcanic activity in the same place indicating stable melt production beneath this location. The prolonged volcanic activity and the complex volcanic facies architecture of Bondoró suggest that this volcano is a polycyclic volcano, composed of at least two monogenetic volcanoes formed more or less in the same place, each erupted through distinct, but short lived eruption episodes. The total estimated eruption volume, the volcanic facies characteristics and geomorphology also suggests that Bondoró is rather a small-volume polycyclic basaltic volcano than a polygenetic one and can be interpreted as a nested monogenetic volcanic complex with multiple eruption episodes. It seems that Bondoró is rather a "rule" than an "exception" in regard of its polycyclic nature not only among the volcanoes of the Bakony-Balaton Highland Volcanic Field but also in the Neogene basaltic volcanoes of the Pannonian Basin.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Németh, Károly
AU  - Cronin, S
AU  - Haller, M
AU  - Brenna, M
AU  - Csillag, Gábor
TI  - Modern analogues for Miocene to Pleistocene alkali basaltic phreatomagmatic fields in the Pannonian Basin: "Soft-substrate" to "combined" aquifer controlled phreatomagmatism in intraplate volcanic fields
JF  - CENTRAL EUROPEAN JOURNAL OF GEOSCIENCES
J2  - CENT EUR J GEOSCI
VL  - 2
PY  - 2010
IS  - 3
SP  - 339
EP  - 361
PG  - 23
SN  - 2081-9900
DO  - 10.2478/v10085-010-0013-8
UR  - https://m2.mtmt.hu/api/publication/1384576
ID  - 1384576
AB  - The Pannonian Basin (Central Europe) hosts numerous alkali basaltic volcanic fields in an area similar to 200 000 km<sup>2</sup>. These volcanic fields were formed in an approximate time span of 8 million years producing smallvolume volcanoes typically considered to be monogenetic. Polycyclic monogenetic volcanic complexes are also common in each field however. The original morphology of volcanic landforms, especially phreatomagmatic volcanoes, is commonly modified. by erosion, commonly aided by tectonic uplift. The phreatomagmatic volcanoes eroded to the level of their sub-surface architecture expose crater to conduit filling as well as diatreme facies of pyroclastic rock assemblages. Uncertainties due to the strong erosion influenced by tectonic uplifts, fast and broad climatic changes, vegetation cover variations, and rapidly changing fluvio-lacustrine events in the past 8 million years in the Pannonian Basin have created a need to reconstruct and visualise the paleoenvironment into which the monogenetic volcanoes erupted. Here phreatomagmatic volcanic fields of the Miocene to Pleistocene western Hungarian alkali basaltic province have been selected and compared with modern phreatomagmatic fields. It has been concluded that the Auckland Volcanic Field (AVF) in New Zealand could be viewed as a prime modern analogue for the western Hungarian phreatomagmatic fields by sharing similarities in their pyroclastic successions textures such as pyroclast morphology, type, juvenile particle ratio to accidental lithics. Beside the AVF two other, morphologically more modified volcanic fields (Pali Aike, Argentina and Jeju, Korea) show similar features to the western Hungarian examples, highlighting issues such as preservation potential of pyroclastic successions of phreatomagmatic volcanoes.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Németh, Károly
ED  - Canon-Tapia, E
ED  - Szakacs, A
TI  - Monogenetic volcanic fields: Origin, sedimentary record, and relationship with polygenetic volcanism
T2  - What is a volcano?
PB  - Geological Society of America
CY  - Boulder (CO)
SN  - 9780813724706
T3  - Geological Society of America Special Paper ; 470.
PY  - 2010
SP  - 43
EP  - 66
PG  - 24
DO  - 10.1130/2010.2470(04)
UR  - https://m2.mtmt.hu/api/publication/1381671
ID  - 1381671
AB  - Monogenetic volcanism is commonly represented by evolution of clusters of individual volcanoes. Whereas the eruption duration of an individual volcano of a volcanic field is generally short, the life of the entire volcanic fi eld is longer than that of a composite volcano (e.g., stratovolcano). The magmatic output of an individual center in a volcanic field is 1–3 orders of magnitude less than that of a composite volcano, although the total field may be of the same volume as a composite volcano in any composition. These features suggest that the magma source feeding both monogenetic volcanic fields and composite volcanoes are in the same range. Monogenetic volcanic fields therefore are an important and enigmatic manifestation of magmatism at the Earth’s surface. The long eruption duration for an entire volcanic fi eld makes this type of volcanism important for understanding sedimentary basin evolution. Accumulated eruptive products may not be significant from a single volcano, but the collective field may contribute significant sediment to a basin. The eruptive history of volcanic fi elds may span millions of years, during which dramatic climatic and paleoenvironmental changes can take place. Through systematic study of individual volcanoes in a field, detailed paleoenvironmental reconstructions can be made as well as paleogeographic evaluations and erosion-rate estimates. Monogenetic volcanoes are typically considered to erupt only once and to be short-lived; recent studies, however, demonstrate that the general architecture of a monogenetic volcano can be very complex and exhibit longer eruption durations than expected. In this way, monogenetic volcanic fi elds should be viewed as a complex, longlasting
volcanism that in many respects carries the basic characteristics similar to those known from composite volcanoes.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Seghedi, I
AU  - Szakács, A
AU  - Roşu, E
AU  - Pécskay, Zoltán
AU  - Gméling, Katalin
TI  - Note on the evolution of a Miocene composite volcano in an extensional setting, Zĝrand Basin (Apuseni Mts., Romania)
JF  - CENTRAL EUROPEAN JOURNAL OF GEOSCIENCES
J2  - CENT EUR J GEOSCI
VL  - 2
PY  - 2010
IS  - 3
SP  - 321
EP  - 328
PG  - 8
SN  - 2081-9900
DO  - 10.2478/v10085-010-0021-8
UR  - https://m2.mtmt.hu/api/publication/1392155
ID  - 1392155
N1  - P22964
ATKI2010/0014
AB  - Bontĝu is a major eroded composite volcano filling the Miocene Zĝrand extensional basin, near the junction between the Codru-Moma and Highiş-Drocea Mountains, at the tectonic boundary between the South and North Apuseni Mountains. It is a quasi-symmetric structure (16-18 km in diameter) centered on an eroded vent area (9×4 km), buttressed to the south against Mesozoic ophiolites and sedimentary deposits of the South Apuseni Mountains. The volcano was built up in two sub-aerial phases (14-12.5 Ma and 11-10 Ma) from successive eruptions of andesite lava and pyroclastic rocks with a time-increasing volatile budget. The initial phase was dominated by emplacement of pyroxene andesite and resulted in scattered individual volcanic lava domes associated marginally with lava flows and/or pyroclastic block-and-ash flows. The second phase is characterized by amphibole-pyroxene andesite as a succession of pyroclastic eruptions (varying from strombolian to subplinian type) and extrusion of volcanic domes that resulted in the formation of a central vent area. Numerous debris flow deposits accumulated at the periphery of primary pyroclastic deposits. Several intrusive andesitic-dioritic bodies and associated hydrothermal and mineralization processes are known in the volcano vent complex area. Distal epiclastic deposits initially as gravity mass flows and then as alluvial volcaniclastic and terrestrial detritic and coal filled the basin around the volcano in its western and eastern part.Chemical analyses show that lavas are calc-alkaline andesites with SiO<sub>2</sub> ranging from 56-61%. The petrographical differences between the two stages are an increase in amphibole content at the expense of two pyroxenes (augite and hypersthene) in the second stage of eruption; CaO and MgO contents decrease with increasing SiO<sub>2</sub>. In spite of a ~4 Ma evolution, the compositions of calc-alkaline lavas suggest similar fractionation processes. The extensional setting favored two pulses of short-lived magma chamber processes.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Manville, V.
AU  - Németh, Károly
AU  - Kano, K.
TI  - Source to sink: A review of three decades of progress in the understanding of volcaniclastic processes, deposits, and hazards
JF  - SEDIMENTARY GEOLOGY
J2  - SEDIMENT GEOL
VL  - 220
PY  - 2009
IS  - 3-4
SP  - 136
EP  - 161
PG  - 26
SN  - 0037-0738
DO  - 10.1016/j.sedgeo.2009.04.022
UR  - https://m2.mtmt.hu/api/publication/31976847
ID  - 31976847
N1  - Összes idézések száma a WoS-ban: 0
AB  - Volcaniclastic sediments, broadly defined as clastic deposits derived from the transport, deposition and/or redeposition of the products of volcanic activity, have long been a Cinderella of the geosciences. This status is a function of the inherent complexity of the fragmentation, transport and depositional processes that operate in volcanically-impacted environments and the comparatively recent development of the discipline as a specialist area. Volcaniclastic studies are truly interdisciplinary, drawing on many elements of physical volcanology, fluid dynamics, classical clastic sedimentology, hydrology and geomorphology. In the past 30 years volcaniclastic studies have blossomed, partly in response to a number of catastrophic and high-pro. le volcanic eruptions, including Mount St. Helens in 1981, Nevado del Ruiz in 1985 and Pinatubo in 1991, and partly due to integration with the maturing science of fluid dynamics and an increased understanding of the behaviour of particulate dispersions and two-phase granular flows. These historical events have demonstrated that the sedimentary repercussions of volcanic eruptions can have more severe, far-reaching, and prolonged impacts than the initial volcanism. In parallel, studies of well-preserved examples from the geological record have extended our understanding of landscape and environmental responses to styles and scales of volcanism that have not been recorded historically, such as the impacts of caldera-forming eruptions from silicic calderas. As a consequence, studies have expanded beyond classical stratigraphic and sedimentological studies of ancient successions in a variety of plate tectonic settings to a more dynamic focus on process. Ultimately, volcaniclastic successions are the product of the interplay between the volcano, in terms of the style, magnitude and explosivity of the eruption, and the environment, as expressed by physiography, hydrology, energy, and accommodation space. (C) 2009 Elsevier B. V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Németh, Károly
AU  - White, CM
TI  - Intra-vent peperites related to the phreatomagmatic 71 Gulch Volcano, western Snake River Plain volcanic field, Idaho (USA)
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 183
PY  - 2009
IS  - 1-2
SP  - 30
EP  - 41
PG  - 12
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2009.02.020
UR  - https://m2.mtmt.hu/api/publication/1384517
ID  - 1384517
N1  - Megjegyzés-21630174
Z9: 2
AB  - The western Snake River Plain volcanic field in SW Idaho contains up to 400 basaltic vents and centers that produced lava shields, pahoehoe lava fields, scoria cones, and a great variety of phreatomagmatic volcanoes between late Miocene and middle Pleistocene time. Tephra deposits produced by phreatomagmatic eruptions are particularly well exposed in the walls of the Snake River canyon, where thick accumulations of pyroclastic rocks indicate widespread phreatomagmatic eruptive events throughout most of the volcanic history of the region. Previously, many of the phreatomagmatic deposits were considered to be the products of subaqueous eruptions that took place on the floor of one or more large freshwater intra-continental lakes. Recent field based observations confirm the presence of widespread phreatomagmatic pyroclastic rocks; however, some that had been interpreted as being subaqueous exhibit textural features that are more consistent with subaerial depositional environments. Intrusive and extrusive magmatic bodies with features associated with peperite formation have also been identified. Most of these peperites can be attributed to magma-sediment mixing in intra-crater/conduit or vent settings, and therefore they can only be used as widespread paleoenvironmental indicators with limitations to demonstrate magma and surface water (e.g. lake) non-explosive interaction. One of the studied sites ("71 Gulch Volcano") was previously used to indicate the presence of a shallow lake. At this site there is clear field evidence that peperitic feeder dykes contacted muddy, sandy siliciclastic sediments forming globular peperite. The peperitic feeder dykes transition to pillowed, ponded lava up section. The ponded lavas are partially surrounded by a similar to 5-m-thick unit composed of gently dipping, dune bedded, volcanic glass shard-rich, unsorted. tuff and lapilli tuff containing abundant impact sags caused by volcanic lithics. We suggest that the 3D architecture of the erosional remnant of "71 Gulch Volcano" does not require the presence of a lake at the time of its formation; it is equally possible that that it represents a subaerial phreatomagmatic upper conduit - crater filling succession. This interpretation opens up many questions about the Mio/Pliocene evolution of SW Idaho, the timing of the volcanism, and its association with the evolution of the lacustrine systems in the region. In addition, re-evaluations of the volcanic features in SW Idaho have some general implications for the usage of phreatomagmatic pyroclastic rocks for paleoenvironmental reconstruction. (C) 2009 Elsevier B.V. All fights reserved.
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  - CHAP
AU  - Németh, Károly
AU  - Pécskay, Zoltán
AU  - Martin, U
AU  - Gméling, Katalin
AU  - Molnár, Ferenc
AU  - Cronin, SJ
ED  - THOMSON, K
ED  - PETFORD, N
TI  - Hyaloclastites, peperites and soft-sediment deformation textures of a shallow subaqueous Miocene rhyolitic dome-cryptodome complex, Pálháza, Hungary
T2  - Structure and Emplacement of High-Level Magmatic Systems
PB  - Geological Society of London
CY  - Bath
SN  - 9781862392564
T3  - Geological Society Special Publication, ISSN 0305-8719 ; 302.
PY  - 2008
SP  - 63
EP  - 86
PG  - 24
DO  - 10.1144/SP302.5
UR  - https://m2.mtmt.hu/api/publication/120476
ID  - 120476
N1  - 120476 másolata.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Risso, C
AU  - Németh, Károly
AU  - Combina, AM
AU  - Nullo, F
AU  - Drosina, M
TI  - The role of phreatomagmatism in a Plio-Pleistocene high-density scoria cone field: Llancanelo Volcanic Field (Mendoza), Argentina
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 169
PY  - 2008
IS  - 1-2
SP  - 61
EP  - 86
PG  - 26
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2007.08.007
UR  - https://m2.mtmt.hu/api/publication/1384532
ID  - 1384532
N1  - Összes idézések száma a WoS-ban: 0
AB  - The Plio-Pleistocene Llancanelo Volcanic Field, together with the nearby Payun Matru Field, comprises at least 800 scoria cones and voluminous lava fields that cover an extensive area behind the Andean volcanic arc. Beside the scoria cones in the Llancanelo Field, at least six volcanoes show evidence for explosive eruptions involving magma-water interaction. These are unusual in the context of the semi-arid climate of the eastern Andean ranges. The volcanic structures consist of phreatomagmatic-derived tuff rings and tuff cones of olivine basalt composition. Malacara and Jarilloso tuff cones were produced by fallout of a range of dry to wet tephra. The Malacara cone shows more evidence for a predominance of wet-emplaced units, with a steep slump-slope characterized by many soft-sediment deformation structures, such as: undulating bedding planes, truncated beds and water escape features. The Piedras Blancas and Carapacho tuff rings resulted from explosive eruptions with deeper explosion loci. These cones are hence dominated by lapilli tuff and tuff units, emplaced mainly by wet and/or dry pyroclastic surges. Carapacho is the only centre that appears to have started with phreatomagmatic eruptions, with lowermost tephra being rich in non-volcanic country rocks. The presence of deformed beds with impact sags, slumping textures, asymmetrical ripples, dunes, cross- and planar lamination, syn-volcanic faulting and accretionary lapilli beds indicate an eruption scenario dominated by excessive water in the transportational and depositional regime. This subordinate phreatomagmatism in the Llancanelo Volcanic Field suggests presence of ground and/or shallow surface water during some of the eruptions. Each of the tuff rings and cones are underlain by thick, fractured multiple older lava units. These broken basalts are inferred to be the horizons where rising magma interacted with groundwater. The strong palagonitization at each of the phreatomagmatic cones formed hard beds, resistant to erosion, and therefore the volcanic landforms are well-preserved. (C) 2007 Elsevier B.V. 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  - Auer, A
AU  - Martin, U
AU  - Németh, Károly
TI  - The Fekete-hegy (Balaton Highland Hungary) "soft-substrate" and "hard-substrate" maar volcanoes in an aligned volcanic complex - Implications for vent geometry, subsurface stratigraphy and the palaeoenvironmental setting
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 159
PY  - 2007
IS  - 1-3
SP  - 225
EP  - 245
PG  - 21
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2006.06.008
UR  - https://m2.mtmt.hu/api/publication/1384784
ID  - 1384784
N1  - Összes idézések száma a WoS-ban: 0
AB  - The Fekete-hegy volcanic complex is located in the centre of the Bakony Balaton Highland Volcanic Field, in the Pannonian Basin, which formed from the late Miocene to Pliocene period. The eruption of at least four very closely clustered maar volcanoes into two clearly distinct types of prevolcanic rocks allows the observation and comparison of hard-substrate and soft-substrate maars in one volcanic complex. The analyses of bedding features, determination of the proportion of accidental lithic clasts, granulometry and age determination helped to identify and distinguish the two types of maar volcanoes. Ascending magma interacted with meteoric water in karst aquifers in Mesozoic carbonates, as well as in porous media aquifers in Neogene unconsolidated, wet, siliciclastic sediments. The divided basement setting is reflected by distinct bedding characteristics and morphological features of the individual volcanic edifices as well as a distinct composition of pyroclastic rocks. Country rocks in hard-substrate maars have a steep angle of repose, leading to the formation of steep sided cone-shaped diatremes. Enlargement and filling of these diatreme is mainly a result of shattering material by FCI related shock waves and wall-rock collapse during downward penetration of the explosion locus. Country rocks in soft-substrate maars have much shallower angles of repose, leading to the formation of broad, bowl shaped structures or irregular depressions. Enlargement and filling of these diatremes is mainly the result of substrate collapse, for example due to liquefaction of unconsolidated material by FCI-related shock waves, and its emplacement by gravity flows. The Fekete-hegy is an important example illustrating that the substrate of a volcanic edifice has to be taken into account as an important interface, which can have major control on phreatomagmatic eruptions and the resulting characteristics of the volcanic complex. © 2006 Elsevier B.V. All rights reserved.
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  - Karátson, Dávid
AU  - Oláh, I
AU  - Pécskay, Zoltán
AU  - Márton Péterné Szalay, Emőke
AU  - Harangi, Szabolcs
AU  - Dulai, Alfréd
AU  - Zelenka, T
AU  - Kósik, Szabolcs
TI  - Miocene volcanism in the Visegrád Mountains, Hungary: an integrated approach to regional stratigraphy
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 58
PY  - 2007
IS  - 6
SP  - 541
EP  - 563
PG  - 23
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/1138367
ID  - 1138367
N1  - Megjegyzés-24846482
Megjegyzés-22001608
Z9: 2
WC: Geosciences, Multidisciplinary
Eötvös University, Department of Physical Geography, Pazmany Peter setany 1/c, 1117 Budapest, Hungary            
            Eötvös University, Department of Petrology and Geochemistry, Pazmany Peter setany 1/c, 1117 Budapest, Hungary            
            Nuclear Research Institute, Hungarian Academy of Sciences, Bern József tér 18/c, 4001 Debrecen, Hungary            
            Eötvös Loránd Geophysical Institute, Paleomagnetic Laboratory, Columbus út 17-23, 1145 Budapest, Hungary            
            Hungarian Natural History Museum, Department of Geology and Paleontology, Ludovika tér 2, 1083 Budapest, Hungary            
            Hungarian Geological Survey, Stefánia út 14, 1143 Budapest, Hungary            
            Cited By :21            
            Export Date: 30 June 2021            
            Correspondence Address: Karátson, D.; Eötvös University, Pazmany Peter setany 1/c, 1117 Budapest, Hungary; email: dkarat@ludens.elte.hu
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  - Martin, U
AU  - Németh, Károly
TI  - Blocky versus fluidal peperite textures developed in volcanic conduits, vents and crater lakes of phreatomagmatic volcanoes in Mio/Pliocene volcanic fields of Western Hungary
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 159
PY  - 2007
IS  - 1-3
SP  - 164
EP  - 178
PG  - 15
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2006.06.010
UR  - https://m2.mtmt.hu/api/publication/21749655
ID  - 21749655
AB  - Volcanic fields in the Pannonian Basin, Western Hungary, comprise several Mio/Pliocene volcaniclastic successions that are penetrated by numerous mafic intrusions. Peperite formed where intrusive and extrusive basaltic magma mingled with tuff, lapilli-tuff, and non-volcanic siliciclastic sediments within vent zones. Peperite is more common in the Pannonian Basin than generally realised and may be also important in other settings where sediment sequences accumulate during active volcanism. Hajagos-hegy, an erosional remnant of a maar volcano, was subsequently occupied by a lava lake that interacted with unconsolidated sediments in the maar basin and formed both blocky and globular peperite. Similar peperite developed in Kissomlyo, a small tuff ring remnant, where dykes invaded lake sediments that formed within a tuff ring. Lava foot peperite from both Hajagos-hegy and Kissomlyo were formed when small lava flows travelled over wet sediments in craters of phreatomagmatic volcanoes. At Sag-hegy, a large phreatomagmatic volcanic complex, peperite formed along the margin of a coherent intrusion. All peperite in this study could be described as globular or blocky peperite. Globular and blocky types in the studied fields occur together regardless of the host sediment. (c) 2006 Elsevier B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Martin, U
AU  - Németh, Károly
AU  - Lorenz, V
AU  - White, JDL
TI  - Introduction: Maar-diatreme volcanism
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 159
PY  - 2007
IS  - 1-3
SP  - 1
EP  - 3
PG  - 3
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2006.06.003
UR  - https://m2.mtmt.hu/api/publication/1384534
ID  - 1384534
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Németh, Károly
AU  - Martin, U
AU  - Haller, MJ
AU  - Alric, VL
TI  - Cenozoic diatreme field in Chubut (Argentina) as evidence of phreatomagmatic volcanism accompanied with extensive Patagonian plateau basalt volcanism?
JF  - EPISODES
J2  - EPISODES
VL  - 30
PY  - 2007
IS  - 3
SP  - 217
EP  - 223
PG  - 7
SN  - 0705-3797
UR  - https://m2.mtmt.hu/api/publication/1384538
ID  - 1384538
N1  - Összes idézések száma a WoS-ban: 0
AB  - In Patagonia, Argentina, at the northern border of the Patagonian Cenozoic mafic plateau lava fields, newly discovered diatremes stand about 100 m above the surrounding plain. These diatremes document phreatomagmatic episodes associated with the formation of the volcanic fields. The identified pyroclastic and intrusive rocks are exposed lower diatremes of former phreatomagmatic volcanoes and their feeding dyke systems. These remotely located erosional remnants cut through Paleozoic granitoids and Jurassic/Cretaceous alternating siliciclastic continental successions that are relatively easily eroded. Plateau lava fields are generally located a few hundreds of metres above the highest level of the present tops of the preserved diatremes suggesting a complex erosional history and potential interrelationships between the newly identified diatremes and the surrounding lava fields. Uprising magma from the underlying feeder dyke into the diatreme root zone intruded the clastic debris in the diatremes, inflated them and mingled with the debris to form subterranean peperite. The significance of identifying diatremes in Patagonia are twofold: 1) in the syn-eruptive paleoenvironment, water was available in various "soft-sediments ", commonly porous, media aquifer sources, and 2) the identified abundant diatremes that form diatreme fields are good source candidates for the extensive lava fields with phreatomagmatism facilitating magma rise with effective opening of fissures before major lava effusions.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Németh, Károly
AU  - Martin, U
TI  - Shallow sill and dyke complex in western Hungary as a possible feeding system of phreatomagmatic volcanoes in "soft-rock" environment
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 159
PY  - 2007
IS  - 1-3
SP  - 138
EP  - 152
PG  - 15
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2006.06.014
UR  - https://m2.mtmt.hu/api/publication/1384541
ID  - 1384541
N1  - Összes idézések száma a WoS-ban: 0
AB  - Neogene alkaline basaltic rocks in the western Pannonian Basin are eroded remnants of maars, tuff rings, tuff cones, scoria cones and lava fields. The erosion level of these volcanoes is deep enough to expose diatreme zones associated with the phreatomagmatic volcanoes. The erosion level is deeper yet in the west, exposing shallow dyke and sill swarms related to former intra-plate volcanoes. The basanitic sills are irregular in shape and their lateral extent is highly variable. Individual sills reach a thickness of a few tens of metres and they commonly form dome-like structures with rosette-like radial columnar joint patterns. The largest sill system identified in this region is traceable over kilometres, and forms a characteristic ridge running north-east to southwest. Elevation differences in the position of the basanitic sills within an otherwise undisturbed "layer cake-like" siliciclastic succession indicate emplacement of the basanite magma at multiple levels over kilometre-scale distances. The margins of sills in the system are irregular at a dm-to-mm-scale. Undulating contacts of the sills together with gentle thermal alteration in the host sediment over cm-to-dm distances indicate the soft, but not necessarily wet state of the host deposits at the time sills were intruded. Parts of the sill complex show a complicated relationship with the host sediment in form of peperitic zones and irregularly shaped, disrupted, peperite textures. This is interpreted to reflect inhomogenities in water content and rheology of the siliciclastic deposits during intrusion. The current summit of the longest continuous ridge preserves a small diatreme that seems to cut through an otherwise disk-like sill indicating of relationship between sill emplacement and phreatomagmatic explosive eruptions. (c) 2006 Elsevier B.V. All rights reserved.
LA  - English
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  - 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  - 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  - 9781862392120
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  - Karátson, Dávid
AU  - Németh, Károly
AU  - Székely, Balázs
AU  - Ruszkiczay-Rüdiger, Zsófia
AU  - Pécskay, Zoltán
TI  - Incision of a river curvature due to exhumed Miocene volcanic landforms: Danube Bend, Hungary
JF  - INTERNATIONAL JOURNAL OF EARTH SCIENCES
J2  - INT J EARTH SCI
VL  - 95
PY  - 2006
IS  - 5
SP  - 929
EP  - 944
PG  - 16
SN  - 1437-3254
DO  - 10.1007/s00531-006-0075-9
UR  - https://m2.mtmt.hu/api/publication/1384563
ID  - 1384563
AB  - A new model for the formation and relief evolution of the Danube Bend, northern Hungary, is discussed on geomorphological and volcanological grounds. We propose that the present-day U-shaped loop of the Danube Bend was partly inherited from the horseshoe caldera morphology of Keserus Hill volcano, a mid-Miocene (ca 15 Ma) lava dome complex with an eroded central depression open to the north. According to combined palaeogeographical data and erosion rate calculations, the drainage pattern in the Danube Bend region was formed when Pleistocene tectonic movements resulted in river incision and sedimentary cover removal. Formation of the present curvature of the river was due to the exhumation of the horseshoe-shaped caldera as well as the surrounding resistant volcaniclastic successions (i.e. Visegrad Castle Hill) and a hilltop lava dome (Szent Mihaly Hill). The process accelerated and the present narrow gorge of the Danube Bend was formed by very rapid, as young as late Quaternary differential tectonic uplift, also enhancing the original volcanic morphology. On the basis of comparative long-term erosion-rate calculations, we estimated successive elevation changes of the volcanic edifice, including partial burial in late Miocene time. In comparison with various order-of-magnitude changes, the mid-to-late Quaternary vertical movements show increased rates and/or base level drop in the Pannonian Basin.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Martin, U
AU  - Németh, Károly
TI  - How Strombolian is a "Strombolian" scoria cone? Some irregularities in scoria cone architecture from the Transmexican Volcanic Belt, near Volcan Ceboruco, (Mexico) and Al Haruj (Libya)
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 155
PY  - 2006
IS  - 1-2
SP  - 104
EP  - 118
PG  - 15
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2006.02.012
UR  - https://m2.mtmt.hu/api/publication/2083398
ID  - 2083398
N1  - CT Symposium on Explosive Mafic Volcanism held at the IAVCEI 2004 General
Assembly
CY 2004
CL Pucon, CHILE
AB  - Scoria cone modelling focuses on ballistic (no-drag) ejection that are termed Strombolian as a result of weak-intensity, strongly intermittent activity associated with bursting of gas bubbles resulting ballistic emplacement of clasts 10+ cm. Particles with a size < 10 cm are normally unable to follow ballistic trajectories instead depositing from sub-Plinian eruption clouds. The Neogene volcanic field near Volcan Ceboruco in the San Pedro-Ceboruco graben, Mexico includes fissure fed flows, domes, and monogenetic scoria cones. The scoria cones near Ceboruco consist of normal (proximal) to inverse (distal) graded welded and/or non-welded scoria lapilli and coarse ash. The grain size pattern observed from scoria cones at Ceboruco is not consistent with the classic ballistic model of cone growth. Instead it is more consistent with recently proposed model where cones grow by accumulation of clasts falling from a sustained eruption column. Al Haruj a Miocene to Holocene intracontinental basaltic volcanic field in Libya preserves pyroclastic rocks indicating hot emplacement from eruptions of scoria cones and lava fountains. However, craters are commonly wide and surrounded by rims of strongly welded tephra, they closely resemble maar-structures. It is inferred that magmatic fragmentation of the uprising melt often has changed to phreatomagmatic interaction leading to enigmatic explosive events that have removed the top of the volcanic cones and produced maar-like depressions. In the two fields at least four different types of scoria cones have been distinguished that indicates a far greater diversity in eruptive mechanisms of scoria cones than those proposed by earlier researchers. (c) 2006 Elsevier B.V. All rights reserved.
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  - Balogh, Kadosa
AU  - Németh, Károly
TI  - Evidence for the neogene small-volume intracontinental. volcanism in western hungary: K/Ar geochronology of the Tihany Maar volcanic complex
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 56
PY  - 2005
IS  - 1
SP  - 91
EP  - 99
PG  - 9
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/1384548
ID  - 1384548
N1  - Összes idézések száma a WoS-ban: 0
AB  - The Tihany Maar Volcanic Complex (TMVC) consists of several eruptive centres and is made up mostly of pyroclastic rocks. It belongs to the Bakony-Balaton Highland Volcanic Field (BBHVF), which is an extensive Late Miocene-Pliocene alkaline basaltic volcanic field in Western Hungary. The TMVC is the only known location in the BBHVF where volcanic rocks are in a stratigraphically fixed position near the boundary of the Congeria balatonica-Prosodacnomya Zones. Since 1985 this stratigraphic importance motivated repeated efforts to obtain unquestionable radiometric data with sufficient accuracy for the volcanic phases. Due to the difficulties of dating basaltic pyroclastic rocks (detrital contamination, excess argon, argon loss during hydrothermal alteration, high atmospheric argon content, etc.), this is for the first time a fully acceptable age of 7.92 +/- 0.22 Ma has been obtained for the onset of volcanic activity of the TMVC at the location Monk's cave. This age is a key datum for the boundary of Congeria balatonica-Prosodacnomya Zones and it agrees well with the start of alkali basaltic volcanic activity in Central Slovakia. 7.35 +/- 0.45 Ma is obtained for Diosteto. The youngest ages, showing the greatest argon loss were measured for the location Godros. An analysis of the isochron diagrams suggests here an interval from 6.24 +/- 0.73 Ma to 5.92 +/- 0.41 Ma for the time of volcanic activity. This age sequence is in agreement with volcanological field observation and in spite of some uncertainty of the younger age limit, it is indicated that volcanism at Tihany was not a single event of the same volcano, but rather a result of longer lived eruptions from a closely spaced, nested volcanic system.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Bendő, Zsolt
AU  - Korpás, L
TI  - How much time is needed for laccolith formation? A new approach based on a case study from Csódi-hegy, Dunabogdány, Hungary
JF  - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES
J2  - ACTA GEOL HUNG
VL  - 48
PY  - 2005
IS  - 3
SP  - 299
EP  - 316
PG  - 18
SN  - 0236-5278
DO  - 10.1556/AGeol.48.2005.3.4
UR  - https://m2.mtmt.hu/api/publication/2215316
ID  - 2215316
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Fodor, László
AU  - Csillag, Gábor
AU  - Németh, Károly
AU  - Budai, Tamás
AU  - Cserny, Tibor
AU  - Martin, U
AU  - Brezsnyánszky, Károly
AU  - Dewey, J
ED  - Fodor, László
ED  - Brezsnyánszky, Károly
TI  - Tectonic development, morphotectonics and volcanism of the Transdanubian Range. a field guide
TS  - a field guide
T2  - Proceedings of the workshop on „Application of GPS in plate tectonics, in research on fossil energy resources and in earthquake hazard assessment”
PB  - Magyar Állami Földtani Intézet (MÁFI)
CY  - Budapest
SN  - 9636712492
T3  - A Magyar Állami Földtani Intézet alkalmi kiadványa, ISSN 0230-452X ; 204.
PY  - 2005
SP  - 59
EP  - 86
PG  - 28
UR  - https://m2.mtmt.hu/api/publication/1346062
ID  - 1346062
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Karátson, Dávid
AU  - Timár, Gábor
TI  - Comparative volumetric calculations of two segments of the Carpathian Neogene/Quaternary volcanic chain using SRTM elevation data: implications for erosion and magma output rates
JF  - ZEITSCHRIFT FUR GEOMORPHOLOGIE SUPPLEMENTBAND
J2  - Z GEOMORPH SUPPL
VL  - 140
PY  - 2005
SP  - 19
EP  - 35
PG  - 18
SN  - 0044-2798
UR  - https://m2.mtmt.hu/api/publication/1138162
ID  - 1138162
N1  - WoS:hiba:000233987500002 2020-09-04 06:11 típus nem egyezik
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Martin, U
AU  - Németh, Károly
TI  - Eruptive and depositional history of a Pliocene tuff ring that developed in a fluvio-lacustrine basin: Kissomlyo volcano (western Hungary)
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 147
PY  - 2005
IS  - 3-4
SP  - 342
EP  - 356
PG  - 15
SN  - 0377-0273
DO  - 10.1016/j.jvolgeores.2005.04.019
UR  - https://m2.mtmt.hu/api/publication/1384547
ID  - 1384547
N1  - Összes idézések száma a WoS-ban: 0
AB  - Kissomlyo volcano is a Pliocene erosion remnant of an alkaline basaltic tuff ring, belonging to the Little Hungarian Plain Volcanic Field. Late Miocene shallow subaqueous, fluvio-lacustrine sand and mud units underlie sub-horizontally bedded lapilli tuff and tuff beds with an erosional contact. The pyroclastic units, a sequence up to similar to 20 m thick, constitute a semi-circular mound with gentle (<5 degrees) inward-dipping beds. Sedimentary features and field relationships indicate that the pyroclastic units were formed in a terrestrial setting. Phreatomagmatic explosions occurred at a shallow depth, producing a large amount of juvenile ash and lapilli, which were transported and deposited predominantly by pyroclastic density currents, subordinate fallout and reworked by gravity currents. The tuff ring is overlain by a 5 m thick sequence of cross- and parallel laminated siltstone and mudstone deposited in a take inferred to have developed in a crater. The textural and structural differences between the lacustrine units beneath and above the tuff ring sequences suggest that they did not belong to the same lacustrine environment. The post-tuff ring lacustrine sequence is invaded by basanite pillow lava. The lava shows a basal peperitic margin partially destroying the original structure of the lacustrine beds due to fluidisation. The time gap between the tuff ring formation and the emplacement of the lava flow is estimated to be in the order of thousands of years. (c) 2005 Elsevier B.V All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Seghedi, I
AU  - Szakács, A
AU  - Pécskay, Zoltán
AU  - Mason, PRD
TI  - Eruptive history and age of magmatic processes in the Calimani volcanic structure (Romania)
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 56
PY  - 2005
SP  - 67
EP  - 75
PG  - 9
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/149680
ID  - 149680
N1  - [P18487 ATKI2005/0011]
AB  - The Calimani Mountains represent the largest and most complex volcanic structure at the northern part of the Calimani-Gurghiu-Harghita range in Romania. Sixty-eight K-At ages (thirty-three new) provide constraints on the eruptive history of the Calimani volcanic structure between 11.3 and 6.7 Ma. The oldest rocks are from shallow exhumed intrusions, which pierced the basement between 11.3-9.4 Ma. The oldest stratovolcano was centered on the presently recognizable main volcanoes, Rusca-Tihu and the Calimani Caldera and grew very large (ca. 300 km(3)), generating a large-volume (26 km 3) debris avalanche. Debris avalanche blocks dated between 10.2-7.8 Ma, suggest an edifice failure event at 8.0 +/- 0.5 Ma. The Dragoiasa Formation (9.3-8.4 Ma), Budacu Formation (9.0-8.5 Ma), Lomas Formation (8.6 Ma), a number of Peripheral Domes (8.7-7.1 Ma) and Sarmas basalts (8.5-8.3 Ma) were also active before the debris avalanche event. Volcanic activity continued from the Rusca-Tihu Volcano between 8.0-6.9 Ma, generating the "Rusca-Tihu Volcaniclastic Formation". The Calimani Caldera structure including pre-caldera and post-caldera stages was generated between 7.5-6.7 Ma, with an inferred collapse event at 7.1 +/- 0.5 Ma. Monzodioritic-dioritic bodies in the central part of the caldera show ages between 8.8-7.3 Ma, implying several episodes of intrusions. Fractional crystallization was important in the generation of different magma series at lower crustal to shallow crustal depths, where plagioclase was the main crystallizing phase. Crustal assimilation affected most of the analysed samples to some degree through assimilation-fractional-crystallization (AFC) processes. Isotopic enrichment of the most basic rocks suggests that contamination processes affected the source of most parental magmas, except those of the Lomas Formation. The initial stages of volcanism were most complex from the petrological point of view. The Dragoiasa Formation (represented only by felsic rocks), for instance, suggests either fractionation from a basic parental magma and mixing with partial melts of (lower) crustal origin, or represents direct melting of the garnet bearing lower crust. The Lomas Formation represents the most primitive magma, which reached the surface recording minimal interaction with crustal material and most closely characterizes the isotopic composition of the mantle source beneath the Calimani Volcano. The youngest volcanic rocks represented by the Calimani Caldera structure were derived from magmas that show a lower degree of partial melting and were largely affected by assimilation processes.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Kovács, István János
AU  - Zajacz, Z
AU  - Szabó, Csaba
TI  - Type-II xenoliths and related metasomatism from the Nógrád-Gömör Volcanic Field, Carpathian-Pannonian region (northern Hungary-southern Slovakia)
JF  - TECTONOPHYSICS
J2  - TECTONOPHYSICS
VL  - 393
PY  - 2004
IS  - 1-4
SP  - 139
EP  - 161
PG  - 23
SN  - 0040-1951
DO  - 10.1016/j.tecto.2004.07.032
UR  - https://m2.mtmt.hu/api/publication/1883941
ID  - 1883941
N1  - #Kötet ismeretlen
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Panaiotu, CG
AU  - Pécskay, Zoltán
AU  - Hambach, U
AU  - Seghedi, I
AU  - Panaiotu, CE
AU  - Tetsumaru, I
AU  - Orleanu, M
AU  - Szakács, A
TI  - Short-lived quaternary volcanism in the Persani Mountains (Romania) revealed by combined K-Ar and paleomagnetic data
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 55
PY  - 2004
IS  - 4
SP  - 333
EP  - 339
PG  - 7
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/149320
ID  - 149320
N1  - [P18027]
Megjegyzés-23316063
: George/0000-0001-9332-8926
AB  - New K-Ar ages combined with paleomagnetic data demonstrate that the basaltic volcanism in the Per am Mountains occurred in two relatively short phases. The first one lasted several tens of thousands of years around 1.2 Ma and it seems that the inception of the volcanic activity took place in two isolated places and reached the maximum extent during the Cobb Mountain Normal Polarity Subchron when larger areas were covered. The second phase started just before 600 ka and was restricted to the central area of the volcanic field. One lava flow of this phase recorded a short-lived reversed polarity event inside the Brunhes Normal Chron, probably the 15beta reversal excursion. The duration of this phase was less than 200 kyr, which is the best estimate according to the available radiometric data.
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
UR  - https://m2.mtmt.hu/api/publication/1155444
ID  - 1155444
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  - Szakács, A
AU  - Snelling, NJ
AU  - Pécskay, Zoltán
TI  - Evolution of the Neogene Gurghiu Mountains volcanic range (Eastern Carpathians, Romania), Based on K-Ar geochronology
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 55
PY  - 2004
SP  - 325
EP  - 332
PG  - 8
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/149297
ID  - 149297
N1  - [P18026]
Megjegyzés-23474836
FN: Thomson Reuters Web of Knowledge
AB  - K-Ar ages of rocks from the Gurghiu Mountains, the middle part of the longest volcanic chain in the Eastern Carpathians (Calimani-Gurghiu-Harghita), indicate an interval of volcanic activity between 9.4-5.4 Ma. Magmatic activity migrated from North to South and built the following volcanic centres: Jirca (J), Fancel-Lapusna (FL), Bacta (B), Seaca-Tatarea (ST), Borzont (BZ), Sumuleu (S) and Ciumani-Fierastraie (CF). The timing of volcanic activity in each volcanic centre reflects the previously recognized overlapping age progression from North to South along the arc: J = 9.2-7.0 Ma; FL = 9.4-6.0 Ma; B = 7.5-7.0 Ma; ST = 7.3-5.4 Ma; BZ = 6.8 Ma; S = 6.8-6.2 Ma; CF = 7.1-6.3 Ma. Two peripheral small intrusive bodies have also been dated (Ditrau - 7.9 Ma and Corund - 7.4 Ma). The duration of volcanic activity of each centre is ca. 1 Ma, with a larger interval of 2.5 Ma for the Fancel-Lapusna volcano. Volcanic activity in the southernmost volcanic centres (ST; BZ; S; CF) between 7-6 Ma was contemporaneous. Certain volcanological problems are pointed out: (i) the voluminous debris-avalanche deposit assumed to belong to the Calimani Mountains includes blocks of ca. 8 Ma up to the Gurghiu Valley and between 7.5-7.8 Ma south of the Gurghiu Valley (ii) the Fancel-Lapusna caldera was generated around 6.9 Ma and involved a post-caldera uplift and/or erosion of the caldera floor and younger domes; and (iii) the model based on volcanic facies distribution is consistent with the new age-data.
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  - Szabó, Csaba
AU  - Falus, György
AU  - Zajacz, Z
AU  - Kovács, István János
AU  - Bali, E
TI  - Composition and evolution of lithosphere beneath the Carpathian-Pannonian region: a review
JF  - TECTONOPHYSICS
J2  - TECTONOPHYSICS
VL  - 393
PY  - 2004
IS  - 1-4
SP  - 119
EP  - 137
PG  - 19
SN  - 0040-1951
DO  - 10.1016/j.tecto.2004.07.031
UR  - https://m2.mtmt.hu/api/publication/1883932
ID  - 1883932
N1  - Cited By :77            
            Export Date: 7 October 2022            
            Correspondence Address: Szabó, C.; Lithosphere Fluid Research Lab., Pázmany Peter setany 1/C, Budapest H-1117, Hungary; email: cszabo@cerberus.elte.hu
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Székely, Balázs
AU  - Karátson, Dávid
TI  - DEM-based morphometry as a tool for reconstructing primary volcanic landforms: Examples from the Börzsöny Mountains, Hungary
JF  - GEOMORPHOLOGY
J2  - GEOMORPHOLOGY
VL  - 63
PY  - 2004
IS  - 1-2
SP  - 25
EP  - 37
PG  - 13
SN  - 0169-555X
DO  - 10.1016/j.geomorph.2004.03.008
UR  - https://m2.mtmt.hu/api/publication/1760938
ID  - 1760938
N1  - Institut für Geowissenschaften, Universität Tübingen, Sigwartstr. 10, D-72076 Tübingen, Germany            
            Space Research Group, Department of Geophysics, Eötvös University, Pázmány P. setany 1/b, H-1117 Budapest, Hungary            
            Department of Physical Geography, Eötvös University, Pázmány P. setany 1/c, H-1117 Budapest, Hungary            
            Cited By :45            
            Export Date: 27 January 2023            
            Correspondence Address: Székely, B.; Institut für Geowissenschaften, Sigwartstr. 10, D-72076 Tübingen, Germany; email: balazs.szekely@uni-tuebingen.de
AB  - A complex application of digital elevation model (DEM) derivatives is presented for a highly degraded volcanic area, the Miocene Börzsöny Mountains, Hungary. We propose unconventional geometrical and mathematical transformations of the original DEM data in order to enhance the topographic features of the volcanic relief that stem from the primary landforms. It is the actual ridges that represent the least degraded surfaces of an original, hypothetical volcanic cone. Therefore, the statistical DEM properties such as ridge pattern (1), slope angle distribution (2) and higher-order slope derivatives (3) should be strongly correlated with the paleosurface. Automated creation of a ridge pattern image is based on the local histogram of the DEM, and helps to outline the original surface remnants. A local slope angle histogram may point out structurally coherent parts of the original cone: for instance, tectonic displacements or large-scale sector slumping does not affect the slope angle histogram of the original relief. Evaluating the ridge maps and slope aspect maps of the Börzsöny Mountains allows various cone sectors to be identified and connected to the original volcano-structural elements. Finally, the polar coordinate-transformed (PCT) image (4) centered on a hypothesized eruptive vent enhances the original, radial valley pattern. In the case of multiple eruptive centers and/or post-eruptive tectonic modifications, the radial pattern is changed, which may be evidenced in the PCT image. In fact, the PCT image analysis for the Börzsöny Mountains suggests a complex post-eruptive tectonic scenario. The presented methods can be recommended to infer the original configuration of highly degraded volcanic structures with poorly known tectonic and erosional history. © 2004 Elsevier B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Zelenka, T
AU  - Balogh, Kadosa
AU  - Kozák, Miklós
AU  - Pécskay, Zoltán
AU  - Ravasz, C
AU  - Ujfalussy, A
AU  - Balázs, É
AU  - Kiss, János
AU  - Nemesi, L
AU  - Püspöki, Zoltán
AU  - Székyné-Fux, V
TI  - Buried Neogene volcanic structures in Hungary
JF  - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES
J2  - ACTA GEOL HUNG
VL  - 47
PY  - 2004
IS  - 2-3
SP  - 177
EP  - 219
PG  - 43
SN  - 0236-5278
DO  - 10.1556/AGeol.47.2004.2-3.6
UR  - https://m2.mtmt.hu/api/publication/149246
ID  - 149246
N1  - [P18111]
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Zajacz, Z
AU  - Szabó, Csaba
TI  - Origin of sulfide inclusions in cumulate xenoliths from Nograd-Gomor Volcanic Field, Pannonian Basin (north Hungary/south Slovakia)
JF  - CHEMICAL GEOLOGY
J2  - CHEM GEOL
VL  - 194
PY  - 2003
IS  - 1-3
SP  - 105
EP  - 117
PG  - 13
SN  - 0009-2541
DO  - 10.1016/S0009-2541(02)00273-5
UR  - https://m2.mtmt.hu/api/publication/2269162
ID  - 2269162
N1  - CT 16th Biennial European Current Research on Fluid 
Inclusions (ECROFI)
CY MAY 02-06, 2001
CL OPORTO, PORTUGAL
AB  - We provide new information about the evolution of the lithosphere beneath the Nogrid-Gomor Volcanic Field (NGVF, northern Pannonian Basin) based on sulfide inclusions in cumulate-origin ultramafic xenoliths. The clinopyroxene-rich cumulate xenoliths, representing the lower crust and upper mantle, underwent metasomatic alteration, which resulted in formation of amphiboles. We have carried out a detailed petrographic observation on sulfide inclusions using reflected light microscope and analyzed numerous back-scattered electron images of the most typical sulfide blebs. Based on the petrographic study, only rounded, elongated or negative crystal-shaped single inclusions, occurring randomly in clinopyroxene and amphibole and rarely in olivine and spinel, have been selected for detailed electron microprobe analysis. The size of these single inclusions ranges from 3 to 75 mum in diameter. The sulfide blebs consist mostly of pyrrhotite and minor chalcopyrite, pentlandite and cubanite. Pyrrhotite, which is the major phase in all the inclusions, is Ni poor (max 6.1 wt.%). Chalcopyrite is deficient in Cu content (greater than or equal to 28.9 wt.%). Pentlandite and cubanite show regular compositions and were identified only in one xenolith. The bulk compositions of sulfide blebs show a tight compositional range and are rich in Fe compared to those in Type-l peridotite xenoliths from the same volcanic field [Geochim. Costnochim. Acta 59 (1995) 3917; Falus, Gy., 2000. Geochemical significance of sulfide inclusions of Cr-diopsidic xenoliths of alkaline basalts occurring in the Carpathian-Pannonian Region. MSc thesis, Department of Petrology and Geochemistry, Eotvos University, Budapest]. The sulfide blebs studied likely formed from a sulfide melt coexisting with a silicate melt. The latter melt was the source of host clinopyroxene-rich cumulates. The sulfide blebs (mineralogically pyrrhotite) experienced a high- and low-temperature evolution, producing further sulfide phases (chalcopyrite, pentlandite, cubanite) present in the blebs. (C) 2002 Elsevier Science B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Bali, E
AU  - Szabó, Csaba
AU  - Vaselli, O
AU  - Török, Kálmán
TI  - Significance of silicate melt pockets in upper mantle xenoliths from the Bakony-Balaton Highland Volcanic Field, Western Hungary
JF  - LITHOS
J2  - LITHOS
VL  - 61
PY  - 2002
IS  - 1-2
SP  - 79
EP  - 102
PG  - 24
SN  - 0024-4937
DO  - 10.1016/S0024-4937(01)00075-5
UR  - https://m2.mtmt.hu/api/publication/2269513
ID  - 2269513
N1  - Lithosphere Fluid Research Lab, Department of Petrology and Geochemistry, Eötvös University, Pázmány Pe. set. 1/c, H-1117 Budapest, Hungary            
            Department of Earth Sciences, University of Florence, Via G. La Pira 4, Italy            
            Department of Geophysics, Eötvös University, Pázmány Pe. se. 1/c, H-1117 Budapest, Hungary            
            Cited By :55            
            Export Date: 7 October 2022            
            Correspondence Address: Szabó, C.; Lithosphere Fluid Research Lab., Páz. Péter setany 1/c, Budapest H-1117, Hungary; email: cszabo@iris.geobio.elte.hu
AB  - Silicate melt pockets with or without carbonate occur in 10% of upper mantle xenoliths from the alkali basalts of the Bakony-Balaton Highland Volcanic Field (BBHVF). Western Hungary. Based on the estimated bulk composition of the melt pockets, both the carbonate-free and the carbonate-bearing ones are considered to be the result of the reaction between primary mantle clinopyroxene and/or amphibole and external CaO, Al(2)O(3), alkali-rich and MgO-poor fluids/melts, as metasomatic agents, migrating in the upper mantle. The metasomatic melt that produced the carbonate-bearing melt pockets was extremely rich in volatiles, whereas metasomatic melt that contributed to the formation of the carbonate-free melt pockets was particularly rich in silica and relatively poor in volatiles. These metasomatizing melts could have originated from the melting of the previously metasomatized upper mantle due to Middle Miocene mantle diapirism. (C) 2002 Elsevier Science B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Csontos, László
AU  - Benkovics, L
AU  - Bergerat, F
AU  - Mansy, JL
AU  - Worum, G
TI  - Tertiary deformation history from seismic section study and fault analysis in a former European Tethyan margin (the Mecsek-Villany area, SW Hungary)
JF  - TECTONOPHYSICS
J2  - TECTONOPHYSICS
VL  - 357
PY  - 2002
IS  - 1-4
SP  - 81
EP  - 102
PG  - 22
SN  - 0040-1951
DO  - 10.1016/S0040-1951(02)00363-3
UR  - https://m2.mtmt.hu/api/publication/2899890
ID  - 2899890
N1  - Cited By :51            
            Export Date: 20 January 2023            
            Correspondence Address: Csontos, L.; Geological Department, Pazmany Péter setany l/c, Budapest 1117, Hungary; email: hungary.laszlo.csontos@ludens.elte.hu
AB  - Outcrop-scale structural data and seismic section interpretation are combined to unveil a very complicated Tertiary deformation history of a once Tethyan margin: the Mecsek-Villany area of Hungary. This combination of data helped to reconstruct the possible activity of individual fault zones. At least four ENE-WSW striking zones-the Northern Imbricates, the South Mecsek zone, the Gorcsony-Mariakemend ridge and the Villany Mountains-were confirmed as regional long-lived transpressive zones with very complicated internal deformation, frequently with oppositely dipping thrust faults. Tertiary structural history began with a roughly N-S-directed shortening in the South Mecsek zone. It was followed by a NE-SW-directed transpression activating practically all important wrench zones together with perpendicular transfer faults. Basins were created along some of these deformation zones, but were also affected by major tilts due to inversion. After a relatively quiescent period in the Middle Miocene, the Late Sarmatian inversion followed. Shortly after, this event was relayed by a NE-SW-directed extension-transtension. An important inversion period characterised by NW-SE compression occurred in Late Pannonian (Messinian), when all the former wrench zones were reactivated as right-lateral shear. This event is responsible for the present topography of the region. (C) 2002 Elsevier Science B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Juhász, A
AU  - M. Tóth, Tivadar
AU  - Ramseyer, K
AU  - Matter, A
TI  - Connected fluid evolution in fractured crystalline basement and overlying sediments, Pannonian Basin, SE Hungary
JF  - CHEMICAL GEOLOGY
J2  - CHEM GEOL
VL  - 182
PY  - 2002
IS  - 2-4
SP  - 91
EP  - 120
PG  - 30
SN  - 0009-2541
DO  - 10.1016/S0009-2541(01)00269-8
UR  - https://m2.mtmt.hu/api/publication/1129807
ID  - 1129807
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Balogh, Kadosa
AU  - Pécskay, Zoltán
TI  - K/Ar and Ar/Ar geochronological studies in the Pannonian-Carpathians-Dinarides (PANCARDI) region
JF  - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES
J2  - ACTA GEOL HUNG
VL  - 44
PY  - 2001
IS  - 2-3
SP  - 281
EP  - 299
PG  - 19
SN  - 0236-5278
UR  - https://m2.mtmt.hu/api/publication/148408
ID  - 148408
N1  - [P14185]
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  - Harangi, Szabolcs
TI  - Neogene to Quaternary Volcanism of the Carpathian-Pannonian Region - a review.
JF  - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES
J2  - ACTA GEOL HUNG
VL  - 44
PY  - 2001
IS  - 2-3
SP  - 223
EP  - 258
PG  - 36
SN  - 0236-5278
UR  - https://m2.mtmt.hu/api/publication/1855089
ID  - 1855089
N1  - Megjegyzés-21388073
[H24971->P13394]
Megjegyzés-10234086
[H20080->P12840]
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Karátson, Dávid
AU  - Németh, Károly
TI  - Lithofacies associations of an emerging volcaniclastic apron in a Miocene volcanic complex: an example from the Borzsony Mountains, Hungary
JF  - INTERNATIONAL JOURNAL OF EARTH SCIENCES
J2  - INT J EARTH SCI
VL  - 90
PY  - 2001
IS  - 4
SP  - 776
EP  - 794
PG  - 19
SN  - 1437-3254
DO  - 10.1007/s005310100193
UR  - https://m2.mtmt.hu/api/publication/1384558
ID  - 1384558
AB  - Lithofacies associations of the first-stage volcanic activity of the Miocene, Borzsony Mountains, North Hungary, have been reconstructed in the light of detailed volcanological mapping, volcanic glass geochemistry and evaluation of palaeogeographic data. In the deeply eroded hilly area, near-vent primary and distal/reworked ring-plain volcaniclastics, preserved in a mosaical pattern, have been identified. Facies distribution reveals two probable facies continua: (a) a shallow-marine silicic explosive to resedimented volcaniclastic; and (b) a subaerial debris-flow to fluvial and shallow-marine debris-flow/turbidite association. Facies characteristics and distribution allow us to (a:) substantiate small-sized calderas, the eroded rims or proximal palaeoslopes of which have been preserved by volcaniclastic breccias (mostly debris-flow deposits); (b) reconstruct a well-developed volcaniclastic apron, spread mostly to the north and representing a south-to-north transport direction. Palaeogeographic interpretation of facies successions indicates a shallow-water initial explosive stage and a subsequent, rapidly evolving, emergent ring plain stage fed by different types of volcaniclastic debris flows.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Németh, Károly
AU  - Martin, U
AU  - Harangi, Szabolcs
TI  - Miocene phreatomagmatic volcanism at Tihany (Pannonian Basin, Hungary)
JF  - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
J2  - J VOLCANOL GEOTH RES
VL  - 111
PY  - 2001
IS  - 1-4
SP  - 111
EP  - 135
PG  - 25
SN  - 0377-0273
DO  - 10.1016/S0377-0273(01)00223-2
UR  - https://m2.mtmt.hu/api/publication/1384556
ID  - 1384556
AB  - A late Miocene (7.56 Ma) maar volcanic complex (Tihany Maar Volcanic Complex - TMVC) is preserved in the Pannonian Basin and is part of the Bakony-Balaton Highland Volcanic Field. Base surge and fallout deposits were formed around maars by phreatomagmatic explosions, caused by interactions between water-saturated sediments and alkali basalt magma carrying peridotite Iherzolite xenoliths as well as pyroxene and olivine megacrysts. Subsequently, nested maars functioned as a sediment trap where deposition built up Gilbert-type delta sequences. At the onset of eruption, magma began to interact with a moderate amount of groundwater in the water-saturated sand. As eruption continued phreatomagmatic blasts excavated downward into limestones, providing access to abundant karst water and deeper to sandstones and schist both providing large amount of fracture-filling water, At the surface, this 'wet' eruption led to the emplacement of massive tuff breccias by fall, surge, mudflow and gravity flow deposition. The nature of the TMVC maar eruptions and their deposits appears to depend on the hydrological condition of the karst and/or fracture-filling aquifer, which varies seasonally with rainfall and spring runoff. The West and East Maar volcanoes of TMVC are interpreted to represent low water input from the karst and/or fracture-filling aquifer ('summer vent'), whereas the East Maar is interpreted to have formed when abundant karst and/or fracture-filling water was available ('spring vent'). (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  - Haas, János
AU  - P, Mioć
AU  - J, Pamić
AU  - B, Tomljenović
AU  - Árkai, Péter
AU  - A, Bérczi-Makk
AU  - Kovács, Sándor
AU  - B, Koroknai
AU  - E, Rálisch-Felgenhauer
TI  - Complex structural pattern of the Alpine-Dinaridic-Pannonian triple junction
JF  - INTERNATIONAL JOURNAL OF EARTH SCIENCES
J2  - INT J EARTH SCI
VL  - 89
PY  - 2000
IS  - 2
SP  - 377
EP  - 389
PG  - 13
SN  - 1437-3254
DO  - 10.1007/s005310000093
UR  - https://m2.mtmt.hu/api/publication/1019043
ID  - 1019043
N1  - Geological Research Group, Hungarian Academy of Sciences, Eötvös Lorand University, Muzeum krt. 4/a, H-1088 Budapest, Hungary            
            Geological Survey of Slovenia, Dimiceva 14, SLO-1000 Ljubljana, Slovenia            
            Croatian Academy of Sciences and Arts, Ante Kovacica 5, HR-10000 Zagreb, Croatia            
            University of Zagreb, Pierollijeva 6, HR-10000 Zagreb, Croatia            
            Laboratory for Geochemical Research, Hungarian Academy of Sciences, Budaorsi ul 45, H-1112 Budapest, Hungary            
            MOL Hungarian Oil and Gas Co., Ballhyany u. 45, H-1039 Budapest, Hungary            
            Hungarian Geological Institute, Stefdnia u. 14, H-1143 Budapest, Hungary            
            Cited By :105            
            Export Date: 28 August 2023
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Pécskay, Zoltán
AU  - Seghedi, I
AU  - Downes, H
AU  - Prychodko, M
AU  - Mackiv, B
TI  - K/Ar dating of neogene calc-alkaline volcanic rocks from Transcarpathian Ukraine
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 51
PY  - 2000
IS  - 2
SP  - 83
EP  - 89
PG  - 7
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/1507565
ID  - 1507565
N1  - [ATKI P13394]
AB  - The Neogene Carpathian are is a complex magmatic are, extending from Slovakia into Romania. The Transcarpathian region in SW Ukraine comprises the central part of this are and was active in the Middle-Late Miocene. The volcanic structures of the Transcarpathian region can be: divided into three major areas: a-Outer Arc; b-Intermediate zone; c-Inner Arc. This division reflects the basic tectonic features of the Ukrainian Carpathians, but differs From other parts of the Carpathian are. The Outer Arc consists of a number of overlapping stratovolcanic structures, generally composed of lava flows, domes, dykes/sills, volcanic necks and lahars of basaltic andesite, andesite and dacite composition. In the Inner Arc, tuffs, ignimbrites and ash deposits of dacite, rhyodacite and rhyolite are abundant. Lava flows of andesitic and basaltic-andesitic composition are present, together with domes of dacite and rhyolite. The Intermediate zone is composed of lava domes and small andesitic shield volcanoes. New K/Ar data obtained From 57 volcanic rock samples has yielded K/Ar ages of 13.4-9.1 Ma. This time interval (similar to 4.5 million years) is similar to that of the neighbouring Carpathian volcanic regions to the west (Tokaj Mts., Hungary) and to the east (Calimani, Romania). Badenian rhyolitic tuffs buried within the Transcarpathian area represented the earlier phases of magmatism, but they have been dated only by biostratigraphic methods. Thus, there is no evidence in this area for any along-are migration of volcanism, unlike in the Eastern Carpathians of Romania. Formation of volcanic structures started simultaneously in both Outer Arc and Inner Arc volcanic areas (13.4 Ma). Different peaks of volcanic activity were observed: (a) between 13.0-11.5 in the Inner Arc, interpreted as the major period of generation of a complex of resurgent domes related to formation of a caldera, probably situated toward the central part of the Transcarpathian depression, and (b) between 11.2-10.5 Ma in the Outer Arc, representing the main period of volcano generation, The end of the volcanic activity (9.5-9.1 Ma) was scattered and less voluminous.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Vass, D
AU  - Konecny, V
AU  - Túnyi, I
AU  - Dolinsky, P
AU  - Balogh, Kadosa
AU  - Hudácková, N
AU  - Kovácová-Slúmková, M
AU  - Belácek, B
TI  - Origin of the Pliocene vertebrate bone accumulation at Hajnácka, Southern Slovakia
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 51
PY  - 2000
SP  - 69
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/147938
ID  - 147938
N1  - [P13466]
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Birkenmajer, K
AU  - Pécskay, Zoltán
TI  - K-Ar dating of the Miocene andesite intrusions, Pieniny Mts, West Carpathians, Poland
JF  - BULLETIN OF THE POLISH ACADEMY OF SCIENCES-EARTH SCIENCES
J2  - BULLETIN OF THE POLISH ACADEMY OF SCIENCES-EARTH SCIENCES
VL  - 47
PY  - 1999
SP  - 155
EP  - 169
PG  - 15
SN  - 0239-7277
UR  - https://m2.mtmt.hu/api/publication/147768
ID  - 147768
N1  - [P12840]
LA  - English
DB  - MTMT
ER  - 

TY  - BOOK
AU  - Budai, Tamás
AU  - Császár, Géza
AU  - Csillag, Gábor
AU  - DUDKO, A
AU  - Koloszár, László
AU  - MAJOROS, GY
TI  - A Balaton-felvidék földtana : Magyarázó a Balaton-felvidék földtani térképéhez, 1:50 000 = Geology of the Balaton Highland : Explanation to the Geological Map of the Balaton Highland, 1:50.000
T3  - A Magyar Állami Földtani Intézet alkalmi kiadványa, ISSN 0230-452X ; 197.
ET  - 0
PB  - Magyar Állami Földtani Intézet (MÁFI)
CY  - Budapest
PY  - 1999
SP  - 257
SN  - 9636712247
UR  - https://m2.mtmt.hu/api/publication/1394508
ID  - 1394508
N1  - Megjegyzés-21027365
246. o.
Megjegyzés-21027380
247. o.
LA  - English
DB  - MTMT
ER  - 

TY  - GEN
ED  - Budai, Tamás
ED  - Csillag, Gábor
ED  - DUDKO, A
ED  - Koloszár, László
TI  - A Balaton-felvidék földtani térképe [Geological map of the Balaton Highland], 1:50 000
PY  - 1999
UR  - https://m2.mtmt.hu/api/publication/1394667
ID  - 1394667
LA  - Hungarian
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  - Magyar, Imre
AU  - Geary, DH
AU  - Muller, P
TI  - Paleogeographic evolution of the Late Miocene Lake Pannon in Central Europe
JF  - PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
J2  - PALAEOGEOGR PALAEOCL
VL  - 147
PY  - 1999
IS  - 3-4
SP  - 151
EP  - 167
PG  - 17
SN  - 0031-0182
DO  - 10.1016/S0031-0182(98)00155-2
UR  - https://m2.mtmt.hu/api/publication/1890263
ID  - 1890263
N1  - Cited By :351            
            Export Date: 24 February 2023            
            CODEN: PPPYA            
            Correspondence Address: Geary, D.H.; Department of Geology and Geophysics, 1215 West Dayton Street, Madison, WI 53706, United States; email: dana@geology.wisc.edu
AB  - The paleogeographic evolution of Lake Pannon within the Pannonian basin is reconstructed with eight maps, ranging from the Middle Miocene to the Early Pliocene. The maps are based on the distribution of selected biozones and specific fossils, and on complementary sedimentological and seismic information. Our reconstruction shows that the history of Lake Pannon can be divided into three distinct intervals: an initial stage with low water level, which resulted in isolation from the sea at about 12 Ma and might have led to temporary fragmentation of the lake; an interval of gradual transgression lasting until ca. 9.5 Ma; and a long late interval of shrinkage and infilling of sediments that persisted into the Early Pliocene. The deep subbasins of the lake formed during the transgressive interval, in more basinward locations than the deep basins of the preceding Sarmatian age. The southern shoreline, running parallel with the Sava and Danube rivers along the northern foot of the Dinarides, changed very Little during the Lifetime of the lake, while the northern shoreline underwent profound changes. (C) 1999 Elsevier Science B.V. All rights reserved.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Németh, Károly
AU  - Martin, U
TI  - Late Miocene paleo-geomorphology of the Bakony-Balaton Highland Volcanic Field (Hungary) using physical volcanology data
JF  - ZEITSCHRIFT FÜR GEOMORPHOLOGIE
J2  - Z GEOMORPHOL
VL  - 43
PY  - 1999
IS  - 4
SP  - 417
EP  - 438
PG  - 22
SN  - 0372-8854
UR  - https://m2.mtmt.hu/api/publication/1384565
ID  - 1384565
AB  - A new view is presented of the Bakony-Balaton Highland Volcanic Field (BBHVF), Hungary, active in late Miocene and built up of ca. 100 mostly alkaline basaltic eruptive centers, scoria cones, tuff rings, maar volcanic complexes and shield volcanoes. A detailed map shows the physical volcanology of the monogenetic volcanic field. In areas where thick Pannonian Sandstone beds build up the pre-volcanic strata normal maar volcanic centers have formed with usually thick late magmatic infill in the maar basins. In areas, where relatively thin Pannonian Sandstone beds resting on thick Mesozoic or Paleozoic fracture-controlled, karsrwater-bearing aquifer, large unusual maar volcanic sequences appear (Tihany type maar volcanoes). In the northern pare of the field large former scoria cones and shield volcanoes give evidence for a smaller impact of the ground and surface water causing phreatomagmatic explosive activity. The Tihany type maar volcanic centers are usually filled by thick maar lake deposits, building up Gilbert type gravelly, scoria rich deltas in the northern side of the maar basins, suggesting a mostly north to south fluvial system in the pre-volcanic surface. Calculating paleosurface elevation for the eruptive centers, two paleo-geomorphology maps are drawn for a younger (4-2.8 Ma) and an older (7.54-4 Ma) scenario. The erosion rate of the volcanic field is estimated to vary between 96 m/Ma and 18 m/Ma. In the western site of BBHVF the erosion rate is higher (more than 60 m/Ma, Tapolca Basin), and an average 50 m/Ma in the center and eastern side.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Sacchi, M
AU  - Horváth, Ferenc
AU  - Magyari, O
ED  - Durand, B
ED  - Jolivet, L
ED  - Horváth, Ferenc
ED  - Seranne, M
TI  - Role of unconformity-bounded units in stratigraphy of continental record: a case study from the Late Miocene of western Pannonian basin; Hungary
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  - 357
EP  - 390
PG  - 34
DO  - 10.1144/GSL.SP.1999.156.01.17
UR  - https://m2.mtmt.hu/api/publication/1256299
ID  - 1256299
N1  - Research Institute GEOMARE SUD, CNR, Napoli, Italy            
            Department of Geophysics, Eötvös University, Budapest, Hungary            
            Cited By :95            
            Export Date: 24 February 2023            
            Correspondence Address: Sacchi, M.; Research Institute, , Napoli, Italy
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). We present an up-to-date stratigraphic framework for the Late Miocene (post-rift) non-marine strata of the western Pannonian Basin, based on unconformity-bounded units as they are derived from seismic interpretation. The data set used for this study consisted of some 1700 km of conventional, multi-channel reflection seismic profiles across western Hungary integrated by 190 km of high-resolution, single- channel seismic profiles acquired on Lake Balaton in June of 1993. Seismic stratigraphic analysis has been constrained by selected geological mapping, well-logs and borehole data. A magnetostratigraphic record was also available from a corehole in the study area, together with recent K/Ar dating of basaltic rocks from the Balaton highland. Five third-order (with 10 6 year periodicities) stratigraphic sequences have been recognized at regional scale in the Late Miocene succession of the western Pannonian Basin. We have designated these sequences, from bottom to top, as Sarmatian-1 (SAR-1) and Pannonian-1 (PAN-1) to Pannonian-4 (PAN-4). Reliable time constraints were only available for the two maximum flooding surfaces of sequences PAN-2 and PAN-3, namely mfs-2 (9.0 Ma) and mfs-3 (7.4 Ma), and the boundary of sequence PAN-2 (PAN-2 SB) which is approximately dated at 8.7 Ma. PAN-2 sequence boundary is associated with evidence of relative water-level drop in the Pannonian Lake and significant exposure of lake margins that is widely recorded in the so-called 'marginal facies' of western Hungary. The higher rank unit bounded by PAN-1 SB and PAN-4 SB includes most of the Pannonian s.l. succession of the central Paratethys and approximately correlates with the Tortonian-Messinian of the standard chronostratigraphy. Seemingly, no major palaeo-environmental impact was perceptible in the western Pannonian Basin during the Messinian salinity crisis of the Mediterranean. However a significant change in the regional stratigraphic patterns may be observed since earliest Pliocene (after PAN-4 SB), possibly associated with the very beginning of a large-scale tectonic inversion within the intra-Carpathian area. The case of Late Miocene non-marine strata of Pannonian Basin is a textbook example of how single categories of stratigraphic units do not fit (sometimes do not even approximate) chronostratigraphic correlation. The use of unconformity-bounded units offers new insights into the complex and long debated problem of stratigraphic correlation between Late Neogene deposits of the Pannonian Basin and 'similar' non-marine strata of the Central Paratethys realm. Our study shows that the so-called 'Pontian facies' of western Hungary correspond to an unconformity-bounded unit which is older than the Pontian s.s. facies of the stratotype area (Black Sea basin). Accordingly, we suggest that different stages may be used to discriminate between such similar-in-facies but different-in-age strata. We hence recommend the introduction of a new chronostratigraphic unit ('Danubian' or 'Transdanubian') in the Late Miocene series of Central Paratethys and a three-fold sub-division of the Pannonian (s.l.) strata into Early Pannonian (Pannonian s.s.), 'Middle Pannonian' ('Danubian' or 'Transdanubian') and Late Pannonian (Pontian s.s.) stages.
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  - Szakács, A
AU  - Seghedi, I
AU  - Zelenka, T
AU  - Márton Péterné Szalay, Emőke
AU  - Pécskay, Zoltán
AU  - Póka, Teréz
TI  - Miocene acidic explosive volcanism in the Bükk Foreland, Hungary: identifying eruptive sequences and searching for search location.
JF  - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES
J2  - ACTA GEOL HUNG
VL  - 41
PY  - 1998
IS  - 4
SP  - 413
EP  - 435
PG  - 23
SN  - 0236-5278
UR  - https://m2.mtmt.hu/api/publication/1155181
ID  - 1155181
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Budai, Tamás
AU  - Haas, János
TI  - Triassic sequence stratigraphy of the Balaton Highland, Hungary
JF  - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES
J2  - ACTA GEOL HUNG
VL  - 40
PY  - 1997
IS  - 3
SP  - 307
EP  - 335
PG  - 29
SN  - 0236-5278
UR  - https://m2.mtmt.hu/api/publication/1025551
ID  - 1025551
N1  - Cited By :23 
 Export Date: 3 December 2018
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Rosu, E
AU  - Pécskay, Zoltán
AU  - Stefan, A
AU  - Popescu, G
AU  - Panaiotu, C
AU  - Panaiotu, CE
TI  - The evolution of the Neogene volcanism in the Apuseni Mountains (Romania): constraints from new K-Ar data
JF  - GEOLOGICA CARPATHICA
J2  - GEOL CARPATH
VL  - 48
PY  - 1997
SP  - 1
EP  - 7
PG  - 7
SN  - 1335-0552
UR  - https://m2.mtmt.hu/api/publication/147089
ID  - 147089
N1  - [P10892]
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Rosu, E
AU  - Pécskay, Zoltán
AU  - Stefan, A
AU  - Popescu, G
AU  - Panaiotu, C
AU  - Panaiotu, CE
TI  - The evolution of the Neogene volcanism in the Apuseni Mountains (Rumania): Constraints from new K-Ar data
JF  - GEOLOGICKY ZBORNIK
J2  - GEOL ZBORN
VL  - 48
PY  - 1997
IS  - 6
SP  - 353
EP  - 359
PG  - 7
SN  - 0016-7738
UR  - https://m2.mtmt.hu/api/publication/1507566
ID  - 1507566
N1  - [ATKI P10892]
Megjegyzés-10228707
[H24947->P09786]
AB  - New K-Ar data from the Apuseni Mountains Neogene volcanic area are presented. When combined with geological and magnetic polarity data, the new data clarify the duration and evolution of this volcanic area. They show that the Neogene volcanic activity took place during the Late Badenian-Pannonian (15-7 Ma). The beginning of calc-alkaline andesitic volcanism (around 15-13 Ma) had an explosive character giving a widespread volcano-sedimentary formation. The volcanic activity reached the paroxysm during the Sarmatian (13.5-11 Ma), when thick lava flows and large volcanic structures were emplaced. This activity decreased in the Pannonian (10-7 Ma) and was restricted to the central and northeastern parts of the studied area. In the central part, the volcanic activity slopped in the Early Pannonian (10 Ma), while in the northeastern part it lasted until the Late Pannonian (7 Ma). The volcanic products are covered by pure sedimentary formations in only a few parts of the area. During all this time, tectonic activity played an important role in the basin's development and volcanic processes.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Posgay, Károly
AU  - Takács, Ernő
AU  - Szalay, István
AU  - Bodoky, Tamás János
AU  - Hegedűs, Endre
AU  - Jánváriné, Kántor Ilona
AU  - Tímár, Zoltán
AU  - Varga, Géza
AU  - Bérczi, István
AU  - Szalay, Árpád
AU  - Nagy, Zoltán
AU  - Pápa, Antal
AU  - Hajnal, Zoltán
AU  - Reilkoff, Brian
AU  - Mueller, Stephan
AU  - Ansorge, Joerg
AU  - De Iaco, Remo
AU  - Asudeh, Isa
TI  - International deep reflection survey along the Hungarian Geotraverse
JF  - GEOFIZIKAI KÖZLEMÉNYEK - GEOPHYSICAL TRANSACTIONS
J2  - GEOFIZIKAI KÖZLEMÉNYEK
VL  - 40
PY  - 1996
IS  - 1-2
SP  - 1
EP  - 44
PG  - 44
SN  - 0016-7177
UR  - https://m2.mtmt.hu/api/publication/2248748
ID  - 2248748
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Szabó, Csaba
AU  - Bodnar, RJ
TI  - Changing magma ascent rates in the Nógrád-Gömör volcanic field northern Hungary southern Slovakia: Evidence from CO2-rich fluid inclusions in metasomatized upper mantle xenoliths
JF  - PETROLOGY
J2  - PETROLOGY+
VL  - 4
PY  - 1996
IS  - 3
SP  - 221
EP  - 230
PG  - 10
SN  - 0869-5911
UR  - https://m2.mtmt.hu/api/publication/2195543
ID  - 2195543
N1  - CT International Symposium on Melt Inclusions and Petrogenic 
Indicators in
: Igneous Environments, at the 1995 Spring AGU Session
CY 1995
CL BALTIMORE, MD
AB  - Metasomatized upper mantle xenoliths from the Nograd-Gomor Volcanic Field of north Hungary and south Slovakia contain two distinctly different occurrences of CO2 inclusions. An earlier generation of inclusions shows re-equilibration textures produced by hi,oh internal pressures generated following trapping. These inclusions were trapped below the MOHO at a depth of 30-50 km in the amphibole-bearing spinel lherzolite stability field, and their xenolith hosts were transported to the MOHO in approximate to 36 hours at an ascent rate of 0.1 m/sec. At the MOHO, fluid lost from the earlier generation of CO2 inclusions during re-equilibration was trapped to form a younger generation of CO2 inclusions. The xenoliths containing the inclusions were subsequently erupted from this depth to the surface in approximate to 1.5 hours at an ascent rate of 5 m/sec.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Dobosi, Gábor
AU  - Fodor, RV
AU  - Goldberg, SA
TI  - Late-Cenozoic alkalic basalt magmatism in the northern Pannonian basin; eastern Europe: petrology; source compositions; and relationship to tectonics.. Neogene and Related Magmatism in the Carpatho-Pannonian Region.
TS  - Neogene and Related Magmatism in the Carpatho-Pannonian Region.
JF  - ACTA VULCANOLOGICA
J2  - ACTA VULCANOL
VL  - 7
PY  - 1995
IS  - 2
SP  - 199
EP  - 207
PG  - 1
SN  - 1121-9114
UR  - https://m2.mtmt.hu/api/publication/1124935
ID  - 1124935
N1  - [H09111->P08770]
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  - Embey-Isztin, Antal
AU  - Dobosi, Gábor
TI  - Source mantle characteristics beneath the Carpathian-Pannonian Region: a review of trace element and isotopic evidence from Pliocene to Quaternary alkali basalts.
JF  - ACTA VULCANOLOGICA
J2  - ACTA VULCANOL
VL  - 7
PY  - 1995
SP  - 155
EP  - 166
PG  - 12
SN  - 1121-9114
UR  - https://m2.mtmt.hu/api/publication/1124938
ID  - 1124938
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  - VASELLI, O
AU  - DOWNES, H
AU  - THIRLWALL, M
AU  - Dobosi, Gábor
AU  - CORADOSSI, N
AU  - SEGHEDI, I
AU  - SZAKACS, A
AU  - VANNUCCI, R
TI  - ULTRAMAFIC XENOLITHS IN PLIOPLEISTOCENE ALKALI BASALTS FROM THE EASTERN TRANSYLVANIAN BASIN - DEPLETED MANTLE ENRICHED BY VEIN METASOMATISM
JF  - JOURNAL OF PETROLOGY
J2  - J PETROL
VL  - 36
PY  - 1995
IS  - 1
SP  - 23
EP  - 53
PG  - 31
SN  - 0022-3530
DO  - 10.1093/petrology/36.1.23
UR  - https://m2.mtmt.hu/api/publication/1124685
ID  - 1124685
AB  - Ultramafic xenoliths from alkali basalts in the Persani Mountains in
the Eastern Transylvanian Basin (ETB) of Romania are mainly spinel
lherzolites, although spinel harzburgites, websterites,
clinopyroxenites and amphibole pyroxenites are also present. Amphibole
veins cut some spinel peridotite samples. All are derived from the
shallow lithospheric upper mantle. In general, textural variations are
restricted to protogranular and porphyroclastic types, compared with
the more varied textures found in mantle xenoliths from the alkali
basalts of the neighbouring Pannonian Basin. Also, ETB peridotites are
richer in amphibole. Thus, the mantle beneath the edge of the ETB is
less deformed but more strongly metasomatized than the mantle closer to
the centre of the Pannonian Basin.
Mineralogical and bulk-rock geochemical variations resemble those of
spinel lherzolites from other sub-continental shallow mantle xenolith
suites. There is no apparent correlation between deformation and
geochemistry, and much of the major and trace element variation is due
to variable extraction of picritic melts The REE patterns of separated
clinopyroxenes from the peridotite xenoliths are mostly LREE depleted,
although clinopyroxenes from regions adjacent to amphibole veins have
experienced an enrichment in La and Ce and a change in their Sr and Nd
isotopic values towards those of the vein, while still retaining an
overall LREE depletion. Clinopyroxenes from the websterites and
clinopyroxenites are more variable. Amphibole in the hydrous
pyroxenites and amphibole veins is strongly LREE enriched and is
considered to be metasomatic in origin. Sr-87/Sr-86 and Nd-143/ Nd-144
isotopic ratios of the xenoliths vary between 0.7018 and 0.7044, and
0.51355 and 0.51275, respectively. These values are more depleted than
those obtained for xenoliths from the Pannonian Basin. The lower
Nd-143/Nd-144 and higher Sr-87/Sr-86 values are found in anhydrous
pyroxenites, metasomatic amphiboles in veins and amphibole pyroxenites,
and in the only example of an equigranular spinel lherzolite in the
suite.
The ETB xenoliths were brought to the surface in alkaline volcanism
which post-dated a period of Miocene to Pliocene subduction-related
calc-alkaline volcanism. However, the effects of the passage of either
slab-derived fluids or calc-alkaline magmas through the ETB
lithospheric mantle cannot be discerned in the chemistry of the
xenoliths. The metasomatic amphibole has Sr-87/Sr-86 and Nd-143/Nd-144
ratios similar to the host alkali basalts, but the least evolved
calc-alkaline magmas also have similar Sr and Nd isotope compositions.
The REE patterns of the amphibole resemble those of amphiboles
considered to have crystallized from alkaline melts. No preferential
enrichment in elements typically associated with slab-derived fluids
(K, Rb and Sr) relative to elements typically depleted in calc-alkaline
magmas (Ti, Zr and Nb) has been observed in the vein amphiboles,
although some interstitial amphibole is depleted in all incompatible
trace elements, including LREE. Thus, despite its position dose to the
calc-alkaline volcanic are of the Eastern Carpathians, we cannot
readily detect any interaction between the lithospheric upper mantle
beneath the ETB and subduction-related magmas or fluids. Metasomatism
in the lithospheric mantle is instead largely related to the passage of
a primitive alkaline magma similar to the host alkali basalts.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Bernád, A
AU  - Karátson, Dávid
TI  - Geomorphological and geological evidences for one of the oldest crater remnants known in the Carpathians: Mt. Rotunda, Gutii Mts. Revue Roumaine de Géol., Géofiz.
JF  - REVUE ROUMAINE DE GEOGRAPHIE
J2  - REV ROUM GEOGR
VL  - 38
PY  - 1994
SP  - 115
EP  - 121
PG  - 7
SN  - 1220-5311
UR  - https://m2.mtmt.hu/api/publication/2107026
ID  - 2107026
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  - Edelstein, O
AU  - Bernád, A
AU  - Kovács, M
AU  - Crihán, M
AU  - Pécskay, Zoltán
TI  - Preliminary data regarding the K/Ar ages of some eruptive rocks from the Baia Mare Neogene volcanic zone
JF  - REVUE ROUMAINE DE GEOLOGIE
J2  - REV ROUM GEOL
VL  - 36
PY  - 1992
SP  - 45
EP  - 60
PG  - 16
SN  - 1220-529X
UR  - https://m2.mtmt.hu/api/publication/145779
ID  - 145779
N1  - [P08085]
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  -