TY - JOUR AU - Demény, Attila AU - Berentés, A AU - Rinyu, László AU - Kovács, Ivett AU - Surányi, Gergely AU - Virág, Magdolna TI - Subaqueous carbonate speleothems as paleotemperature archives – clumped isotope thermometry and stable isotope compositions of inclusion-hosted wate JF - INTERNATIONAL JOURNAL OF SPELEOLOGY J2 - INT J SPELEOL VL - 53 PY - 2024 IS - 1 SP - 25 EP - 37 PG - 13 SN - 0392-6672 DO - 10.5038/1827-806X.53.1.2480 UR - https://m2.mtmt.hu/api/publication/34659670 ID - 34659670 N1 - Funding Agency and Grant Number: Balaton Uplands National Park [102-2/2022]; Eotvos Lorand Research Network; European Union [GINOP-2.3.2-15-2016-00009 'ICER']; Hungarian State; European Regional Development Fund; [SA-41/2021] Funding text: The sampling conducted for this study in Berger Karoly Cave was permitted by the directorate of the Balaton Uplands National Park (No. 102-2/2022) . Rezso Szilaj and Denes Szieberth provided essential help during sampling in Berger Karoly and Molnar Janos caves, respectively. The authors are indebted to Ariana Gugora for polishing the English of the manuscript. Constructive reviews and helpful comments of three anonymous reviewers, and the editorial handling by Bogdan P. Onac are gratefully thanked. The study was financed by the Eotvos Lorand Research Network (projects SA-41/2021; ELKH KEP-1/2020) . The clumped isotope facility of the Institute for Nuclear Research was supported by the European Union and the Hungarian State, co -financed by the European Regional Development Fund in the project of GINOP-2.3.2-15-2016-00009 'ICER'. LA - English DB - MTMT ER - TY - JOUR AU - Lázár, Károly AU - Máthé, Z AU - Németh, Tibor AU - Kovácsné Kis, Viktória AU - Stichleutner, Sándor AU - Kovács, Ivett TI - Iron-Bearing Minerals in the Boda Claystone Formation: Correspondences with Stages of Evolution Revealed by Mössbauer Spectroscopy JF - MINERALS J2 - MINERALS-BASEL VL - 14 PY - 2024 IS - 2 PG - 24 SN - 2075-163X DO - 10.3390/min14020196 UR - https://m2.mtmt.hu/api/publication/34643332 ID - 34643332 LA - English DB - MTMT ER - TY - JOUR AU - Bujtor, László AU - Gyollai, Ildikó AU - Szabó, Máté Zoltán AU - Kovács, Ivett AU - Polgári, Márta Piroska TI - Bacteria-Driven Fossil Ecosystems as Paleoindicators of Active Continental Margins and the Role of Carbonate Sediment-Hosted Vents in Geodynamic Reconstructions JF - MINERALS J2 - MINERALS-BASEL VL - 14 PY - 2024 IS - 2 PG - 22 SN - 2075-163X DO - 10.3390/min14020125 UR - https://m2.mtmt.hu/api/publication/34530343 ID - 34530343 N1 - Institute of Geography and Environmental Sciences, Eszterházy Károly Catholic University, 6-8 Leányka Street, Eger, H-3300, Hungary HUN-REN Research Centre for Astronomy and Earth Sciences, Institute for Geological and Geochemical Research, Budaörsi út 45, Budapest, H-1112, Hungary HUN-REN Research Centre for Astronomy and Earth Sciences, MTA Centre of Excellence, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary Export Date: 25 March 2024 Correspondence Address: Polgári, M.; Institute of Geography and Environmental Sciences, 6-8 Leányka Street, Hungary; email: rodokrozit@gmail.com AB - Continental rifting of the Tisza microplate started during the Late Jurassic and resulted in phreatic eruptions, peperite, and the construction of a volcanic edifice in the Early Cretaceous in the Mecsek Mountains (South Hungary). In the SE direction from the volcanic edifice at Zengővárkony, a shallow marine (depth 100–200 m) carbonate sediment hosted a vent environment, and iron ore deposition occurred at the end of the Valanginian to early Hauterivian, hosting a diverse, endemic fauna of approximately 60 species. The detailed mineralogical analysis of the transport conduits included Fe oxides (ferrihydrite, goethite, hematite, and magnetite), quartz, mixed carbonate, pyrite, feldspar, Fe-bearing clay minerals, apatite, sulfates (barite, gypsum, and jarosite), and native sulfur. Filamentous, microbially mediated microtextures with inner sequented, necklace-like spheric forms (diameter of 1 μm) and bacterial laminae are also observed inside decapod crustacean coprolites (Palaxius tetraochetarius) and in the rock matrix. This complex ecological and mineralogical analysis provided direct evidence for the presence of bacteria in fossil sediment-hosted vent (SHV) environments on the one hand and for the intimate connection between bacteria and decapod crustaceans in hydrothermal environments 135 Ma before. This observation completes the fossil food chain of chemosynthesis-based ecosystems, from primary producers to the top carnivores reported for the first time from this locality. LA - English DB - MTMT ER - TY - JOUR AU - Cseresznyés, Dóra AU - Király, Csilla AU - Gál, Á AU - Papucs, A AU - Kónya, P AU - Lakos, I AU - Kovács, Ivett AU - Rinyu, László AU - Szamosfalvi, Á AU - Szabó, Csaba AU - Falus, György AU - Czuppon, György TI - Surface occurrence of dawsonite and natural CO2 emanation in Covasna, in the Eastern Carpathians: A stable isotope study JF - CHEMICAL GEOLOGY J2 - CHEM GEOL VL - 645 PY - 2024 SN - 0009-2541 DO - 10.1016/j.chemgeo.2023.121883 UR - https://m2.mtmt.hu/api/publication/34445854 ID - 34445854 N1 - Lithosphere Fluid Research Lab (LRG), Eötvös Loránd University (ELTE), Pázmány Péter sétány 1/C, Budapest, 1117, Hungary Doctoral School of Environmental Science, Eötvös Loránd University (ELTE), Pázmány Péter sétány 1/C, Budapest, 1117, Hungary Geographical Institute (GI), Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network, Budaörsi út 45, Budapest, 1112, Hungary Department of Geology, Babeș-Bolyai University, Kogălniceanu str. 1., Cluj, RO-400084, Romania County Nature Conservation and Mountain Rescue Center, Gábor Áron str. 1., Sfântu Gheorghe, RO-520003, Romania Directorate of Geology, Supervisory Authority for Regulatory Affairs (SARA), Sas utca 20-22., Budapest, 1051, Hungary Institute for Geological and Geochemical Research, HUN-REN Research Centre for Astronomy and Earth Sciences, Budaörsi út 45, Budapest, 1112, Hungary CSFK, MTA Centre of Excellence, Konkoly Thege Miklós út 15–17, Budapest, 1121, Hungary Isotope Climatology and Environmental Research Centre (ICER), Institute for Nuclear Research (ATOMKI), HUN-REN, Bem tér 18/c., Debrecen, 4026, Hungary Institute of Earth Physics and Space Science, HUN-REN, Csatkai Endre utca 6-8., Sopron, 9400, Hungary Export Date: 15 January 2024 Correspondence Address: Czuppon, G.; Institute for Geological and Geochemical Research, Budaörsi út 45, Hungary; email: czuppon@geochem.hu LA - English DB - MTMT ER - TY - JOUR AU - Lange-Enyedi, Nóra AU - Kériné Borsodi, Andrea AU - Németh, Péter AU - Czuppon, György AU - Kovács, Ivett AU - Leél-Őssy, Szabolcs AU - Dobosy, Péter AU - Felföldi, Tamás AU - Demény, Attila AU - Makk, Judit TI - Habitat-related variability in the morphological and taxonomic diversity of microbial communities in two Hungarian epigenic karst caves JF - FEMS MICROBIOLOGY ECOLOGY J2 - FEMS MICROBIOL ECOL VL - 99 PY - 2023 IS - 12 PG - 17 SN - 0168-6496 DO - 10.1093/femsec/fiad161 UR - https://m2.mtmt.hu/api/publication/34431117 ID - 34431117 N1 - Institute for Geological and Geochemical Research, HUN-REN Research Centre for Astronomy and Earth Sciences, Budaörsi út 45, Budapest, H-1112, Hungary Department of Microbiology, Institute of Biology, Faculty of Science, Eötvös Loránd University, Pázmány P. sétány 1/C, Budapest, H-1117, Hungary Institute of Aquatic Ecology, HUN-REN Centre for Ecological Research, Karolina út 29, Budapest, H-1113, Hungary Research Institute of Biomolecular and Chemical Engineering, Nanolab, University of Pannonia, Egyetem út 10, Veszprém, H-8200, Hungary Department of Physical and Applied Geology, Faculty of Science, Eötvös Loránd University, Pázmány P. sétány 1/C, Budapest, H-1117, Hungary Export Date: 8 February 2024 CODEN: FMECE Correspondence Address: Makk, J.; Department of Microbiology, Pázmány P. sétány 1/C, Hungary; email: makk.judit@ttk.elte.hu AB - The physical and chemical characteristics of the bedrock, along with the geological and hydrological conditions of karst caves may influence the taxonomic and functional diversity of prokaryotes. Most studies so far have focused on microbial communities of caves including only a few samples and have ignored the chemical heterogeneity of different habitat types such as sampling sites, dripping water, carbonate precipitates, cave walls, cave sediment and surface soils connected to the caves. The aim of the present study was to compare the morphology, the composition and physiology of the microbiota in caves with similar environmental parameters (temperature, host rock, elemental and mineral composition of speleothems) but located in different epigenic karst systems. Csodabogyós Cave and Baradla Cave (Hungary) were selected for the analysis of bacterial and archaeal communities using electron microscopy, amplicon sequencing, X-ray diffraction and mass spectroscopic techniques. The microbial communities belonged to the phyla Pseudomonadota, Acidobacteriota, Nitrospirota and Nitrososphaerota, and they showed site-specific variation in composition and diversity. The results indicate that morphological and physiological adaptations provide survival for microorganisms according to the environment. In epigenic karst caves, prokaryotes are prone to increase their adsorption surface, cooperate in biofilms, and implement chemolithoautotrophic growth with different electron-donors and acceptors available in the microhabitats. LA - English DB - MTMT ER - TY - JOUR AU - Hegedűs, M AU - Kovácsné Kis, Viktória AU - Szabó, Ábel AU - Kovács, Ivett AU - Rózsa, Noémi Katinka AU - Kovács, Zsolt TI - Gradient structural anisotropy of dental enamel is optimized for enhanced mechanical behaviour JF - MATERIALS AND DESIGN J2 - MATER DESIGN VL - 234 PY - 2023 PG - 12 SN - 0264-1275 DO - 10.1016/j.matdes.2023.112369 UR - https://m2.mtmt.hu/api/publication/34169402 ID - 34169402 AB - Exceptional mechanical performance of dental enamel in the harsh environment of oral cavity can be preserved on decade timescale, which is a unique property in comparison with functional nanomaterials. Hierarchic architecture of enamel, based on site-specific structural organization of apatite nanocrystals has a key role in this durability. In the present study, a novel SEM imaging based method is presented for obtaining quantitative information on enamel prism orientation in sound primary dental enamel. This missing puzzle of quantification of the hierarchical enamel structure, along with spatial mechanical and chemical mapping, shed light on the optimum anisotropic gradient behaviour of elastic modulus of dental enamel. Specifically, orientation and composition dependent contributions in both the spatially changing hardness and elastic modulus were separated. Anisotropy of the enamel’s modulus was predicted and verified by the spatial variation of average prism orientation. Based on our results we conclude that the anisotropy of modulus for the bulk enamel arises from the elastic gradient in direction normal to the enamel external surface combined with the nearly constant value of modulus in the perpendicular cross section. This behaviour results in high surface strength and additionally can be responsible to the superior durability of human enamel. LA - English DB - MTMT ER - TY - JOUR AU - Polgári, Márta Piroska AU - Nagy, Béla AU - Fintor, Krisztián AU - Gyollai, Ildikó AU - Kovács, Ivett AU - Szabó, Máté Zoltán AU - Mojzsis, Stephen, James TI - Microbially-induced K enrichments in hydrothermally altered andesitic tuffs JF - ORE GEOLOGY REVIEWS J2 - ORE GEOL REV VL - 162 PY - 2023 PG - 20 SN - 0169-1368 DO - 10.1016/j.oregeorev.2023.105630 UR - https://m2.mtmt.hu/api/publication/34158142 ID - 34158142 N1 - Funding Agency and Grant Number: Hungarian National Research, Development and Innovation Office, National Scientific Research [125060]; Research Centre for Astronomy and Earth Sciences Funding text: The authors are grateful for the support of the Hungarian National Research, Development and Innovation Office, National Scientific Research Fund No. 125060. Further support with provided by the Research Centre for Astronomy and Earth Sciences. SJM thanks the Alexander von Humboldt Foundation for the AvH Research Prize hosted by the Friedrich -Schiller University in Jena (Germany) during which time a significant amount of the writing took place. LA - English DB - MTMT ER - TY - CONF AU - Benkó, Zsolt AU - Oravecz, Éva AU - Fodor, László AU - Kövér, Szilvia AU - Obbágy, Gabriella AU - Németh, Tibor AU - Kovács, Ivett AU - Máthé, Zoltán AU - Arató, Róbert AU - Molnár, Kata AU - Maros, Gyula TI - Illite K/Ar dating of fault zones, sedimentary sequences and low-grade metamorphic rocks T2 - 19th meeting of the Central European Tectonic Studies Group (CETeG) PY - 2023 SP - 7 EP - 8 PG - 2 UR - https://m2.mtmt.hu/api/publication/33830548 ID - 33830548 LA - English DB - MTMT ER - TY - GEN AU - Bujtor, László AU - Gyollai, Ildikó AU - Szabó, Máté Zoltán AU - Kovács, Ivett AU - Polgári, Márta Piroska TI - Bacteria driven fossil ecosystems as indicator of active continental margins in the geological past. Usefulness of carbonate sediment hosted vent environments in geodynamic reconstructions PY - 2023 DO - 10.21203/rs.3.rs-2670327/v1 UR - https://m2.mtmt.hu/api/publication/33766194 ID - 33766194 LA - English DB - MTMT ER - TY - JOUR AU - Meister, P AU - Frisia, S AU - Dódony, István AU - Pekker, Péter AU - Molnár, Zsombor AU - Neuhuber, S AU - Gier, S AU - Kovács, Ivett AU - Demény, Attila AU - Pósfai, Mihály TI - Nanoscale Pathway of Modern Dolomite Formation in a Shallow, Alkaline Lake JF - CRYSTAL GROWTH & DESIGN J2 - CRYST GROWTH DES VL - 23 PY - 2023 IS - 5 SP - 3202 EP - 3212 PG - 11 SN - 1528-7483 DO - 10.1021/acs.cgd.2c01393 UR - https://m2.mtmt.hu/api/publication/33741775 ID - 33741775 LA - English DB - MTMT ER -