Bányászati, Kohászati és Földtani Konferencia
Erdélyi Magyar Műszaki Tudományos Társaság (EMT) - ányászati, Kohászati és Földtani Szakosztálya
A Kaba CV3 szenes kondrit szervesanyag kutatásának aktuális eredményei
The Kaba meteorite, a CV3 carbonaceous chondrite, provides a unique opportunity to investigate extraterrestrial organic matter's molecular and structural characteristics. This study explores the distribution, composition, and evolution of organic compounds in the meteorite, emphasizing recent research findings. The role of hydrothermal alteration and redox conditions in the formation of the organic matter assemblage is discussed concerning mass spectrometry. Comparative analysis with other carbonaceous chondrites highlights the distinct chemical pathways and environmental influences shaping Kaba's organic material, such as soluble N-heterocyclic compounds.
Az ostrai barit-polimetallikus ércesedés kialakulási viszonyai és jelentősége a kritikus nyersanyagok szempontjából
Fieldwork, detailed mineralogical and geochemical analyses at Ostra have revealed significant insights into its mineralization, initially thought to be focused merely on barite discovered in the 1960s. Beside the previously described, vein-type barite, we identified massive sulphide bodies associated with massive barite. Therefore, our results support the idea of a complex mineralisation process; comprising of an earlier step, which could be related to Cambrian submarine hydrothermal ore-forming processes, and a later step of epigenetic origin.
barite, submarine, hydrothermal, VMS, sulfide
barit, szubmarin, hidrotermás, VMS, szulfid
Talajtani változatosság és annak okai Belső-Somogyban - Háromfa esettanulmány
This paper aims to summarize the main soil forming factors of the Belső-Somogy region. This very young surface is characterized with a great variability of parent materials. Due to the alluvial-aeolian origin, abruptly changing texture classes dominate the area, which often cause water stagnation. The major soils are Stagnosols and Luvisols, but Arenosols, Gleysols also occur in the area. The geomorphology of the area is the most dominant variable that explains the soil variability and the changing physical and chemical soil properties.
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A Csíkszentimrei Büdösfürdő gázömléseinek, ásványvizeinek vizsgálata és kapcsolata a higany ércesedéssel
The topic of this paper is the study of fluid geochemical processes in Sântimbru-Băi area, located in the Southern Harghita, which is part of the Călimani-Gurghiu-Harghita volcanic range. Specifically, it focuses on mapping the CO2 and H2S gas flux of a former mercury mine from the 1970s and examining how the released gases affect the environment. Using a flux meter we obtained an accurate picture of where and to what extent higher concentrations of CO2 and H2S are released in the mining area. Additionally, monitoring the spring waters revealed that the present fluids influence their composition and have an impact on the environment.
A magyar genetikus és diagnosztikus talajosztályozási rendszerek összehasonlítása és felülvizsgálata egy választott mintaterületen
Soil science, despite being a relatively young discipline, is continuously developing and integrating itself into the study of environmental challenges affecting our modern world. With the advancement of digital toolsets, this progression is accelerating. This development is observable in both Hungarian and international soil description methodologies and has become indispensable with the emergence of digital soil mapping and precision agriculture. It is important for us to harmonize Hungarian and international methodologies to facilitate their adaptation into a unified system. In the present research, we compare various soil types in an area exhibiting diverse soil characteristics and apply the diagnostic soil classification system. The advantage of methodological standardization and the application of a diagnostic approach to soil classification is that it significantly simplifies field descriptions, thereby streamlining the processes involved in genetic soil mapping.
Néhány gondolat a geológus és az építő mérnök közötti párbeszédről
The goal of this article is to analyze the role of the geologist in the engineer's design in the rock environment. The two professions have different approaches to problem solving, and consequently in many cases the two professions 'talk' past each other. The geologist thinks in a different time scale, approaches geological questions differently, which the engineer cannot deal with, but at the same time does not get answers to the questions that are essential for the design. The engineering geological model is presented and through an example, the difference between the two disciplines are shown, as well.
A szektorok szerinti metánkibocsátás mértéke és csökkentésének lehetőségei
Greenhouse gases are causing negative climate change globally. One of the most important of these gases is methane, which has a global warming potential (GWP) of 28. Its greenhouse effect is 28 times stronger than carbon dioxide, and its atmospheric concentration is the result of both human activity and natural processes. Its concentration in the atmosphere increased steadily from the beginning of the Industrial Revolution until the 1990s. The consequences of its destructive impact on climate change and atmospheric processes have led to intensive study of methane emissions and strategies to reduce them. This article reviews the sources and sinks of methane and the key technologies that are crucial for reducing emissions in each sector.
Diósgyőr-Vasgyár halványuló kohász emléke
It is a known fact that the beginning of the iron smelting industry in Diósgyőr dates back to 1770, and the year of the factory's relocation to Diósgyőr-Vasgyár is 1867. The foundry ladle is emblematic of the slag casting of the iron foundrymen. The creator Gusztáv Kraituz was born here in 1926. The plans for the monument were made by the artist as a gift for the sculptor. The light of the memorial is dimmer than originally planned, as is the memory of the metallurgy that made Miskolc a great industrial city 255 years ago.
metallurgy, iron and steel industry, sculptor, monument, cinder casting, anchor point
kohászat, vas- és acélgyártás, szobrász, emlékmű, salaköntés, kitűzési pont
A földgázszektor jövője és az alternatív gázok szerepe a magyar energiaszektorban
The future of the natural gas sector in Hungary is facing significant transformation as supply security, sustainability, and climate goals pose new challenges for the industry. Alternative gases, such as biomethane and hydrogen, are expected to play a gradually increasing role in the domestic energy mix, reducing import dependency and carbon emissions. The targeted development of natural gas infrastructure and the shaping of the regulatory environment are crucial for the success of the green transition, making the upcoming energy policy developments a key factor in determining the pace of alternative gas adoption.
Hidrogén töltőállomás tűz- és robbanásvédelmi megoldásai
Hydrogen fuelling stations will soon replace conventional fuel fuelling stations, but systems that meet the highest performance and safety standards are still needed. The safety challenges and risks associated with hydrogen will vary depending on the specific design of the hydrogen fuelling station and will need to be addressed differently. The fire and explosion risks and hazards of hydrogen fuelling stations can be minimised by appropriate precautions and devices.
hydrogen, leak detection, invisible fire, flame detection, safety distance
A UNFC alkalmazása a GSEU projektben – eredmények
The Geological Surveys of Europe (GSEU) project supports the EU Critical Raw Materials Act (2024) by promoting sustainable resource management through the United Nations Framework Classification (UNFC). The project reassesses onshore and offshore critical raw materials (CRM), develops UNFC-based data harmonization, and contributes to resource classification and reporting. These efforts enhance the security and sustainability of Europe’s raw material supply while aligning with the 2030 Sustainable Development Goals (SDGs).
A cirkon ásvány felhasználásának lehetőségei és korlátjai az impaktszerkezetek és meteoritok vizsgálatában
This review article describes the dating methods and their limitations on zircon crystals in the point of view of impact structures and meteorites, and introduces the „Gucsik-index”. This new index combines various mineral chemistry information and helps gaining new measure on the shock metamorphic level of the zircon crystals.
A dél-dobrudzsai kora eocén (ypresi) nummulites-es mészkövek mikrofácies elemzése
The lower Eocene (Ypresian) nummulitic limestones of southern Dobrogea are subject of microfacies analysis in order to reconstruct the paleoenvironments. The studied limestones preserve 3 main microfacies types: packstone, wackestone and floatstone which are abundant in LBF’s. Based on the abundance of the LBF’s and the identified microfacies types, a moderate energy depositional environment located in the central part of a carbonate ramp can be reconstructed.
A domborzatpusztulás mértékének vizsgálata kárpáti mintaterületeken
GIS based estimations of post-Paleogene surface denudation are presented on 10 sampling areas, which are situated in the Romanian Carpathians. Three of these are young, not very dissected plateaus (formed during the Late-Miocene-Pliocene period), where – through the digital reconstruction of the initial surfaces – quite exact estimations of denudation quantities were possible. Seven areas are situated on terrains with more complex tectonic origin and morphology, where – according to the most Romanian geomorphologists – partially conserved Paleogene and Neogene planation surfaces are extended on the highest peaks. In these areas the quantity of denudation was estimated from the values of digitally obtained GR (geophysical relief) surfaces.
A köpeny-eredetű, a kozmikus anyagmintákra és a cirkumsztelláris környezetekre jellemző Mg/Si arányok komparatív vizsgálata
Xenoliths and other mantle-derived rocks show that the upper mantle is dominated by peridotite and Al-bearing phases that varies in compositional characteristics with increasing depth. The solar Mg/Si ratio is closely resemble to the chondritic values. The magnesium-to-silicon elemental ratio of the mantle-derived rocks is not only higher than solar, but they are thought to have a similar bulk Mg/Si ratios to that of the Solar System inner rocky planets depending on their formation location in the Solar nebula and their post-accretion processes.
Valós idejű helyszíni vízminőség-ellenőrző rendszer kiépítésének aktuális kérdései a Kárpát-medencében
Regarding the physical geographical character of the Carpathian Basin, we can say that we get a location resembling a concentric circle. Accordingly, the observation stations for the in-situ real-time measurements must also be placed forming an outer and inner ring, which are mainly connected to the catchment area of the Danube. The measuring stations could be placed at these intersections. The construction of the above system provides essential water quality data for the drinking water and industrial water supply of the local population, as well as for the environmental status assessment, especially at the former ore mines.
The development, current status and perspectives of the geothermal energy utilization in Vojvodina, Serbia is discussed. We focuse on the current state-of-the art of geothermal energy utilization based on the experience of exploratory boreholes planned and executed by VIKUV. The detailed structure of wells drilled in the recent years is also discussed and presented.
Enyhe és zord telek Erdélyben a 20. században
Winter mean temperatures from 7 (1901-1960) and from 14 (1961-2000) weather stations in Transylvania, Romania were analyzed. Years with temperatures below the 10th percentile were considered cold winters, while years with temperatures above the 90th percentiles were regarded as mild years. Cold winters occured in 1909, 1929, 1932, 1942, 1954, 1963, 1964, 1969 and 1985. Mild winters were in 1902, 1910, 1951, 1977, 1988, 1994 and 1998. The meteorologial conditions of these winters are also reflected in the newspapers published in those years.
Új petrográfiai eredmények a középső permi Cserdi Formáció alsó szakaszában előforduló felzikus vulkanit kavicsokról (Dél-Dunántúl, Magyarország)
The silicic volcanic rocks of the Gyűrűfű Lapilli Tuff Formation represent the only known Permian volcanic unit in the Mecsek Mts, predominantly composed of ignimbrites and other types of pyroclastic rocks. Their reworked clasts are abundant in the lower section of the Cserdi Formation, a middle Permian alluvial conglomerate sequence. This study presents a detailed petrographic description and classification of the felsic volcanic pebbles from the XV. structural borehole and identifies three main lithofacies. Among them a previously undocumented relict vitrophyric, quartz-free lithofacies has been recognized, which is absent from other known exposures and drill cores of the Gyűrűfű Lapilli Tuff. These findings highlight the need for further systematic petrographic and geochemical studies on the sedimentary successions overlying the Gyűrűfű Formation in southern Transdanubia to refine the reconstruction of Permian volcanism in the Tisza Mega-unit.
Kőzettest szilárdság és a geomorfológia kapcsolata a Bükk hegység példáján
Almost one hundred outcrops were qualified based on Rock Mass Rating (RMR) values. The results show that RMR values do not necessarily correlate with the lithology of the formations. Rather, strong deformation and the presence of brittle and ductile structural elements correspond to poor RMR values. Probably the boundary of structural blocks and the intersections of major faults show very low RMR values, while the interior of structural blocks and ridges as more compact geomorphological features show higher RMR values.
IMSYS XXIV. Környezetvédelmi és Iparbiztonsági Konferencia
Mint az Image-Science Kft. alapítója, küldetésemnek tekintem, hogy olyan eszközöket tartalmazó portfóliót biztosítsak ügyfeleim részére, amely lehetővé teszi, hogy használatuk által szaktudásukat a legmagasabb színvonalon képviselhessék. A minőség mellett elengedhetetlen szempont számunkra, hogy a leginnovatívabb technológiákat nyújtsuk és teljes körű szolgáltatást biztosítsunk ügyfeleinek. Külön hangsúly fektetünk arra, hogy lépést tartsunk a Magyarországi igényekkel, így portfoliókat az akkumulátor-ipar és az autógyártás igényei szerint alakítjuk. Fontos szempont számunkra, hogy támogatni tudjuk az újrahasznosítást és ezzel együtt a környezet védelmére is hangsúlyt fektetünk. Műszeres kínálatunkban szerepel Elektronmikroszkóp, Ipari-CT készülék, Atomerő mikroszkóp, LIBS és számos olyan kémiai elemző készülék, amely az újrahasznosítást támogatja. Számos elégedett ügyféllel rendelkezünk Magyarországon és külföldön is, remélem hamarosan Önöket is ügyfelelink között tudhatjuk. Ügyfeleink elégedettsége és az általuk elért sikerek inspirálnak minket a folyamatos bővülésre és új lehetőségek felfedezésére. Büszkék vagyunk, hogy Magyarországon olyan nagy múltú és innovatív technológiákat képviselhetünk – a teljesség igénye nélkül-, mint a Tescan Group, Boecker Instruments, Delong Instruments, NenoVision. Kérjük, látogasson el standunkra, ahol kiváló szakemberek és végtelen lehetőségek várják. Varjú Patrícia
A lég- és talajhőmérsékleti viszonyok együttváltozásának vizsgálata a hóborítottság és talajfagy mértékének alapján a Bükk-fennsíki Mohos-töbörben
The investigation of soil temperature based on snow cover and soil frost is followable in a microclimatic environment by the interactions of higher influencing factors. The temporal, spatial, qualitative and quantitative distribution of the seasonal snow covering determines the exposure of the near-surface soil layer to the external air temperature. The cold microclimate of the Mohos sinkhole (Hungary) makes the research area the natural laboratory to analyze the atmospheric-surface interactions, based on snow depth.
Az energetikai átmenet kérdései: A hidrogén kihívásainak és lehetőségeinek feltárása
Hydrogen plays a key part in the energy transition since it emits no carbon dioxide when burned. Industrial manufacturing of green, black/grey and blue hydrogen does not appear to be the most environmentally beneficial solution and is also not cost effective. Therefore recent studies focused on the identification of natural (white/gold) hydrogen sources.
Újságpapírba csomagolva: Fuchs Herman gyűjteményének titkai
The collection of the former associated professor Herman Fuchs was inventoried and classified in order to serve as the base of further studies. The 223 different fossils belong to 4 main groups (invertebrates, vertebrates, fossil plants and ichnofossils). Most of them were already published in on of Fuchs’ 35 scientific papers, but there are some which did not. The diversity and number of the fossils found in the collection are proof of the excellent and inspiring work of the late Herman Fuchs.
A földi impaktszerkezetek geológiai és ásványtani jellemzői
This review article describes the terrestrial impact structures and their geological and mineralogical consequences. The impact cratering plays a key role not only in Earth’s history but also in the formation of the Solar System. Therefore, it is important to identify some diagnostic mineralogical and geological features to understand more about the formation mechanism of the meteorite craters, which are related to the shock metamorphism.
A nyugat-mecseki Szászvári Formáció kétcsillámú gránitkavicsainak eredetvizsgálata
Large granitoid bodies are common along the Central European Variscan orogenic belt having Late Devonian to Permian ages, being associated with continental collision, subduction zones or post-collisional settings. While some of these granitoids are well-studied and placed within the Variscan geodynamics of East-Central Europe, S-type granitoids in the Tisza Mega-unit are less explored. This study focuses on the petrography and geochemistry of the two-mica granitoid pebbles collected from the conglomerate sequences of the Lower Miocene Szászvár Formation in the western Mecsek Mts and correlates them with the analogous (meta)igneous formations occurring in the pre-Alpine basement of the Tisza Mega-unit.
Lehetőségek a Miskolc környéki homok és kavics bányászatban
In this work, I estimated the mineral quantity in the Miskolc area from the public data of the sand and gravel mines, research areas and areas suitable for further mining. By processing the data, it can be described as a result that the operational mines have 200 million m3, and the research and other areas have 800-800 million m3 of estimated reserves
Folyómederben lévő holtfa mennyiségi felmérése drónfelvétel alapján
Large wood in river channels has received increasing attention in recent years, due to its importance in riverine ecosystems as well as in river morphology and sediment dynamics. Measuring large wood can be challenging, but with advances in remote sensing technologies, moreover in UAV imagery and photogrammetry precise measurements can be assessed. This study shows the results of a survey made for a ~3 km long channel reach of the Ohau river in New Zealand.
Eobilateria transylvanica: a hipotetikus bilatéria ős?
The worm – like animal hosted in Neoproterozoic deposits of the East Carpathians Rebra Nappe, has a tripartite body consisting from head, neck and six inner segments. The slightly ventral flattened body is ended by serial repeated limb – like protuberances, named eopodia, which may have had reflected the blood vascular system and muscle concentrations, related to the nervous system. This animal presented bilateral symmetry and could represent the last common ancestor of all bilaterians.
A széki Entzia macrescens populációdinamikája a vízkémiai paraméterek tükrében
The only extant foraminifera species present in the Transylvanian Basin is Entzia macrescens. First recorded by Jenő Daday in continental salt marshes near Deva, living and subfossil specimens were identified near Sic (Szék) in 2017. Subsequently, we initiated a systematic sampling effort to investigate the population dynamics and morphology of E. macrescens. Our findings indicate that, irrespective of water parameters, the samples consistently exhibited assemblages of E. macrescens with test sizes following a normal distribution. This suggests the existence of well-structured populations of E. macrescens in saltwater marshes at Sic