TY - JOUR AU - Hencz, Mátyás AU - Biró, Tamás AU - Németh, Károly AU - Szakács, Alexandru AU - Portnyagin, Maxim AU - Cseri, Zoltán AU - Pécskay, Zoltán AU - Szabó, Csaba AU - Müller, Samuel AU - Karátson, Dávid TI - Lithostratigraphy of the ignimbrite-dominated Miocene Bükk Foreland Volcanic Area (Central Europe) JF - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH J2 - J VOLCANOL GEOTH RES VL - 445 PY - 2024 SN - 0377-0273 DO - 10.1016/j.jvolgeores.2023.107960 UR - https://m2.mtmt.hu/api/publication/34412174 ID - 34412174 N1 - Export Date: 1 January 2024 Correspondence Address: Hencz, M.; ELTE Eötvös Loránd University, Hungary; email: hencz.matyas@epss.hun-ren.hu AB - This study documents the volcanic evolution of the Miocene silicic Bükk Foreland Volcanic Area (BFVA), Northern Hungary (Central Europe) at an event-scale. The BFVA is a deeply eroded and dissected volcanic field dominated by multiple, several 10-m thick, valley-filling silicic ignimbrite units, which are chemically and texturally very similar to each other. Hence, establishing lateral correlation is a real challenge due to the sporadic and small-scale outcrops and lack of stratotypes. Detailed field observations allowed us to identify eleven lithological members including fourteen eruption events and establish a nearly complete lithostratigraphic correlation between fifteen outcrops across the BFVA. Primary pyroclastic material of each member was sampled, and volcanic glass was analyzed for major and trace element composition. The geochemical results confirm the field-based classification of the members and enable the correlation of distinct outcrops. The major and trace element composition of the glassy pyroclasts of each member of the BFVA served as basis to create a field-wide chemical reference database for regional correlational studies. Here, a new lithostratigraphic classification scheme consisting of one formation and eleven members is presented, which reflects the challenges unraveling the stratigraphy of ancient volcanic terrains. The field-based event-scale lithostratigraphy of the BFVA suggests a wet, partly sea-covered depositional environment in the close vicinity of the eruption centers providing favorable conditions to ‘fuel’ silicic explosive phreatomagmatism. On the contrary, paleosol horizons formed after almost each major eruption event or sequence suggests an overall near-coast terrestrial environment for the BFVA, where the emplacement of the pyroclastic material occurred. LA - English DB - MTMT ER - TY - GEN AU - Hencz, Mátyás AU - Biró, Tamás AU - Németh, Károly AU - Porkoláb, Kristóf AU - Kovács, István János AU - Spránitz, Tamás AU - Sierd, Cloetingh AU - Szabó, Csaba AU - Berkesi, Márta TI - Tectonically Determined Distribution of Intracontinental Basaltic Volcanoes in a Compressive Tectonic Regime: A GIS Approach PY - 2023 UR - https://m2.mtmt.hu/api/publication/34547257 ID - 34547257 AB - By analysing of spatial aspects of a monogenetic volcanic field, knowledge can be acquired on the relationships between the basaltic magmatism and regional tectonics, like impact of faults to the position of the volcanoes, vent propagation in the lithosphere, age-dependent stress condition changes. Examination of the surface patterns of volcanoes might help us understand better the process of magma generation, segregation, and how magma travelled through a thin lithosphere. Moreover, by studying these processes, we can get closer to understanding the evolution of a sedimentary basin in which we can find the link between volcanism and a changing but essentially compressive stress field, where basaltic volcanism is not evident. These spatial patterns of volcanoes can be examined using GIS (geographic information systems). The study area was the Mio-Pleistocene, monogenetic Bakony-Balaton Highland Volcanic Field (BBHVF, Carpathian-Pannonian region, Central Europe), which is located in continental back-arc setting and compressive/transpressive tectonic regime. The methodological toolkit included creating heatmap based on the spatial distribution of the volcanoes, measuring the orientation of the volcanic field comparing the orientation of the faults in the region, and calculating distance to the nearest fault line from each volcanic centre. Poisson nearest neighbour analysis was used to evaluate how clustered or random the occurrence of the volcanoes across the volcanic field. All volcanic lineaments (whether volcanic centres are situated along lines) were calculated, and their orientation was measured to see any systematic directions. The results suggest that the locations of the volcanoes in the BBHVF are most probably tectonically determined. The orientation of volcanic lineaments is also the same as the bounding geometries and the faults. Density of the volcanic centre distribution is the largest in the central area of the BBHVF along a major inactive thrust fault. We speculate that the NW dipping fault plane of this fault could be a ‘catchment area’ in the upper crust (just above the brittle-ductile transition zone), which channelized the magmas and helped them reach the surface. Volcanoes in larger distance from any faults have typically larger volume, and longer active period (several 100 ky), thus their magmas needed to have larger buoyancy to reach the surface without the help of any fault planes. Age pattern and spatial density suggest volcanism getting younger and thicker towards the central part of the BBHVF. Thus, intracontinental monogenetic volcanism in compressional regime is strongly influenced by lithospheric weaknesses and the regional stress field. LA - English DB - MTMT ER - TY - JOUR AU - Hencz, Mátyás AU - Biró, Tamás AU - Németh, Károly AU - Porkoláb, Kristóf AU - Kovács, István János AU - Spránitz, Tamás AU - Cloetingh, Sierd AU - Szabó, Csaba AU - Berkesi, Márta TI - Tectonically-determined distribution of monogenetic volcanoes in a compressive tectonic regime: An example from the Pannonian continental back-arc system (Central Europe) JF - JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH J2 - J VOLCANOL GEOTH RES VL - 444 PY - 2023 SP - 107940 PG - 18 SN - 0377-0273 DO - 10.1016/j.jvolgeores.2023.107940 UR - https://m2.mtmt.hu/api/publication/34210603 ID - 34210603 N1 - MTA-EPSS FluidsByDepth Lendület Research Group, Institute of Earth Physics and Space Science, Hungarian Research Network, Sopron, Hungary Department of Physical Geography, Institute of Geography and Earth Sciences, ELTE Eötvös Loránd University, Budapest, Hungary National Program for Earthquakes and Volcanoes, Geohazard Research Center, Saudi Geological Survey, Jeddah, Saudi Arabia Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy MTA-EPSS Lendület Pannon LitH2Oscope Research Group, Institute of Earth Physics and Space Science, Hungarian Research Network, Sopron, Hungary Lithosphere Fluid Research Lab, Institute of Geography and Earth Sciences, Eötvös Loránd University, Budapest, Hungary Tectonics Research Group, Department of Earth Sciences, Utrecht University, Netherlands Export Date: 30 November 2023 Correspondence Address: Hencz, M.; MTA-EPSS FluidsByDepth Lendület Research Group, Hungary; email: hencz.matyas@epss.hun-ren.hu AB - This paper presents the results from a geographic information systems (GIS) workflow, which was used to analyze the spatial distribution and temporal evolution of volcanoes in the Mio-Pleistocene monogenetic Bakony-Balaton Highland Volcanic Field (BBHVF), located in the Pannonian Basin, Hungary. Volcanism occurred during the tectonic inversion in a back-arc setting and a compressive/transpressive tectonic regime on the hottest and thinnest lithosphere of continental Europe. The main goal of this study is to clarify the effect of the pre-existing structure of the upper lithosphere in the distribution of the volcanic centers across the volcanic field using an innovative GIS methodology. Orientation of the volcanic field was compared to the orientation of the faults in the BBHVF, and in its larger vicinity, which resulted in correspondence, suggesting the dominance of the SW-NE direction. The directions of the volcanic lineaments fit well to the two main fault directions. The fault-volcano proximity analysis suggests that the fault plane of a thrust fault was an important structural feature during the lifespan of the volcanism. All results suggest that the fault plane of a regionally significant Cretaceous thrust fault (Litér Fault) might have likely served as a temporary pathway for the ascending magma, whereby (similarly to other, smaller faults) redirecting the magmas causing clustering of the volcanoes. This highlights the importance of major upper crustal structural heterogeneities for magma transport in a compressive tectonic system, especially in the case of active, monogenetic volcanic fields from a volcanic hazard perspective. The present GIS workflow can be effective in analyzing the spatial patterns of the volcanism and its connection with crustal structures at monogenetic volcanic fields worldwide. LA - English DB - MTMT ER - TY - CHAP AU - Cseri, Zoltán AU - Márton Péterné Szalay, Emőke AU - Palotai, Márton AU - Hencz, Mátyás AU - Biró, Tamás AU - Karátson, Dávid ED - Natália, Hudáčková ED - Andrej, Ruman ED - Michal, Šujan TI - Integrating field volcanology, paleomagnetism and structural geology to correlate a poorly preserved Miocene succession in the East Mátra Mts. (Hungary) T2 - Environmental, Structural and Stratigraphical Evolution of the Western Carpathians : Abstract Book PB - Comenius University in Bratislava CY - Pozsony SN - 9788022355193 PY - 2022 SP - 47 EP - 48 PG - 2 UR - https://m2.mtmt.hu/api/publication/33533651 ID - 33533651 LA - English DB - MTMT ER - TY - JOUR AU - Biró, Tamás AU - Hencz, Mátyás AU - Telbisz, Tamás Ferenc AU - Cseri, Zoltán AU - Karátson, Dávid TI - The relationship between ignimbrite lithofacies and topography in a foothill setting formed on Miocene pyroclastics – a case study from the Bükkalja, Northern Hungary JF - HUNGARIAN GEOGRAPHICAL BULLETIN (2009-) J2 - HUNG GEOGR BULL (2009-) VL - 71 PY - 2022 IS - 3 SP - 213 EP - 229 PG - 17 SN - 2064-5031 DO - 10.15201/hungeobull.71.3.1 UR - https://m2.mtmt.hu/api/publication/33118508 ID - 33118508 AB - Units with extremely variable erodibility are typical in the succession of pyroclastic-dominated volcanic fields. Welded ignimbrites are usually resistant to erosion, thus, they often appear as positive landforms, i.e., mesas or tilted plateaus after millions of years of denudation. The Bükkalja Volcanic Area being part of the most extended foothill area of the North Hungarian Mountains, is composed predominantly of Miocene ignimbrites, where the frequency distributions of elevation a.s.l., slope, aspect, as well as topographic openness, were investigated using a 30 m resolution SRTM-based digital surface model at four sample areas located at different relative distances from the assumed source localities of the ignimbrites, showing both non-welded and welded facies. The degree of dissection was also examined along swath profiles. The topography of the sample area closest to the source localities is dominated by slabs of moderately dissected welded ignimbrites, gently dipping towards SE. Farther away from the source the topography is dominated by erosional valleys and ridges, resulting in a narrower typical elevation range, a higher proportion of pixels with greater than 5° slope, higher frequencies of NE and SW exposures, and more significant incision resulted in more frequent pixels with positive topographic openness less than 1.5 radians here. Higher thicknesses and emplacement temperatures of ignimbrites, often showing welded facies are more common closer to the source vent. Thus, the erosional pattern around calderas can be used to draw conclusions on the spatial extent of the most intense ignimbrite accumulation, i.e., the location of eruption centres even in highly eroded ignimbrite fields. LA - English DB - MTMT ER - TY - CHAP AU - Karátson, Dávid AU - Biró, Tamás AU - Portnyagin, M AU - Kiss, Balázs AU - Paquette, JL AU - Cseri, Zoltán AU - Hencz, Mátyás AU - Németh, Károly AU - Lahitte, P AU - Mártonné, Szalay E AU - Kordos, L AU - Józsa, Sándor AU - Hably, L AU - Müller, S AU - Szarvas, I ED - Fehér, Béla ED - Molnár, Kata ED - Haranginé Lukács, Réka ED - Czuppon, György ED - Kereskényi, Erika TI - Ipolytarnóc: egy 17,2 millió évvel ezelőtti, vei ≥ 7 robbanásos vulkánkitörés eseménysztratigráfiája T2 - Calce et malleo – Mésszel és kalapáccsal PB - Csillagászati és Földtudományi Kutatóközpont CY - Budapest SN - 9789637331008 PY - 2022 SP - 64 EP - 66 PG - 3 UR - https://m2.mtmt.hu/api/publication/33116922 ID - 33116922 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Hencz, Mátyás AU - Biró, Tamás AU - Portnyagin, M AU - Németh, K AU - Szakács, A AU - Cseri, Zoltán AU - Pécskay, Z AU - Dávid, Á AU - Szabó, Csaba AU - Karátson, Dávid ED - Fehér, Béla ED - Molnár, Kata ED - Haranginé Lukács, Réka ED - Czuppon, György ED - Kereskényi, Erika TI - A Bükkalja miocén vulkánosságának eseményszintű rétegtana T2 - Calce et malleo – Mésszel és kalapáccsal PB - Csillagászati és Földtudományi Kutatóközpont CY - Budapest SN - 9789637331008 PY - 2022 SP - 55 UR - https://m2.mtmt.hu/api/publication/33116913 ID - 33116913 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Biró, Tamás AU - Hencz, Mátyás AU - Cseri, Zoltán AU - Telbisz, Tamás Ferenc AU - Karátson, Dávid ED - Fehér, Béla ED - Molnár, Kata ED - Haranginé Lukács, Réka ED - Czuppon, György ED - Kereskényi, Erika TI - A kitörési központok elhelyezkedésének összefüggése a domborzattal egy miocén ignimbritmezőn T2 - Calce et malleo – Mésszel és kalapáccsal PB - Csillagászati és Földtudományi Kutatóközpont CY - Budapest SN - 9789637331008 PY - 2022 SP - 26 UR - https://m2.mtmt.hu/api/publication/33116868 ID - 33116868 LA - Hungarian DB - MTMT ER - TY - CONF AU - Biró, Tamás TI - Az észak-magyarországi miocén piroklasztitok forrásterületei – fizikai vulkanológiai és paleomágneses megközelítés T2 - Intézményi ÚNKP Konferencia 2022 PB - Eötvös Loránd Tudományegyetem (ELTE) C1 - Budapest PY - 2022 SP - 226 UR - https://m2.mtmt.hu/api/publication/33100739 ID - 33100739 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Karátson, Dávid AU - Biró, Tamás AU - Portnyagin, Maxim AU - Kiss, Balázs AU - Paquette, Jean-Louis AU - Cseri, Zoltán AU - Hencz, Mátyás AU - Németh, Károly AU - Lahitte, Pierre AU - Márton Péterné Szalay, Emőke AU - Kordos, László AU - Józsa, Sándor AU - Hably, Lilla AU - Müller, Samuel TI - Large-magnitude (VEI ≥ 7) ‘wet’ explosive silicic eruption preserved a Lower Miocene habitat at the Ipolytarnóc Fossil Site, North Hungary JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 12 PY - 2022 IS - 1 SN - 2045-2322 DO - 10.1038/s41598-022-13586-3 UR - https://m2.mtmt.hu/api/publication/32894628 ID - 32894628 N1 - Department of Physical Geography, Eötvös University, Budapest, Hungary GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany Department of Petrology and Geochemistry, Eötvös University, Budapest, Hungary Laboratoire Magmas et Volcans, Université Clermont Auvergne, Clermont-Ferrand, France School of Agriculture and Environment, Massey University, Palmerston North, New Zealand Institute of Earth Physics and Space Science, Sopron, Hungary Université Paris-Saclay, CNRS, UMR GEOPS, Orsay, 91405, France Mining and Geological Survey of Hungary, Paleomagnetic Laboratory, Budapest, Hungary Eötvös University, Savaria University Centre, Szombathely, Hungary Botanical Department, Hungarian Natural History Museum, Budapest, Hungary Institute of Earth Sciences, Christian-Albrecht University of Kiel, Kiel, Germany Ipolytarnóc Fossils Nature Conservation Area, Ipolytarnóc, Hungary Cited By :2 Export Date: 6 December 2022 Correspondence Address: Karátson, D.; Department of Physical Geography, Hungary; email: karatson.david@ttk.elte.hu AB - During Earth's history, geosphere-biosphere interactions were often determined by momentary, catastrophic changes such as large explosive volcanic eruptions. The Miocene ignimbrite flare-up in the Pannonian Basin, which is located along a complex convergent plate boundary between Europe and Africa, provides a superb example of this interaction. In North Hungary, the famous Ipolytarnoc Fossil Site, often referred to as "ancient Pompeii", records a snapshot of rich Early Miocene life buried under thick ignimbrite cover. Here, we use a multi-technique approach to constrain the successive phases of a catastrophic silicic eruption (VEI >= 7) dated at 17.2 Ma. An event-scale reconstruction shows that the initial PDC phase was phreatomagmatic, affecting >= 1500 km(2) and causing the destruction of an interfingering terrestrial-intertidal environment at Ipolytarnoc. This was followed by pumice fall, and finally the emplacement of up to 40 m-thick ignimbrite that completely buried the site. However, unlike the seemingly similar AD 79 Vesuvius eruption that buried Pompeii by hot pyroclastic density currents, the presence of fallen but uncharred tree trunks, branches, and intact leaves in the basal pyroclastic deposits at Ipolytarnoc as well as rock paleomagnetic properties indicate a low-temperature pyroclastic event, that superbly preserved the coastal habitat, including unique fossil tracks. LA - English DB - MTMT ER -