TY - JOUR AU - Gyollai, Ildikó AU - Biri, Sándor AU - Juhász, Zoltán AU - Király, Csilla AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Szávai, P AU - Szklenár, Tamás AU - Kereszturi, Ákos TI - Raman–Infrared Spectral Correlation of an Artificially Space-Weathered Carbonaceous Chondrite Meteorite JF - MINERALS J2 - MINERALS-BASEL VL - 14 PY - 2024 IS - 3 SN - 2075-163X DO - 10.3390/min14030288 UR - https://m2.mtmt.hu/api/publication/34762210 ID - 34762210 AB - Raman and infrared measurements of the same locations were conducted on a northwest African (NWA) 10580 CO3 meteorite sample, before and after three proton irradiations (1 keV ion energy using 1011, 1014, and 1017 ion/cm2 fluent values), to simulate space weathering effects. In the case of Raman spectroscopy, both FWHM and peak positions of the major olivine and pyroxene bands changed after the irradiation, and the minor bands disappeared. In the FTIR spectra, the minor bands of olivine and pyroxene also disappeared; meanwhile, major IR bands of pyroxene remained visible, demonstrating both positive and negative peak shifts, and the olivines were characterised only by negative peak shifts. The olivines were characterised by negative FWHM changes for major bands, but positive FWHM changes for minor bands. The pyroxenes were characterised by elevated FWHM changes for minor bands after the irradiation. The disappearance of minor bands both of IR and Raman spectra indicates the amorphization of minerals. The negative peak shift in IR spectra indicates Mg loss for olivine and pyroxene, in agreement with the literature. The Raman spectra are characterised by positive peak shift and positive FWHM changes; the IR spectra are characterised by a negative peak shift. The Mg loss, which was detected by negative peak shifts of FTIR bands, may be caused by distortion of the crystal structure, which could be detected by a positive peak shift in Raman spectra. This joint observation and interpretation has not been formulated in the literature, but indicates further possibilities in the confirmation of mineral changes by different instruments. Shock alteration-based observations by other researchers could be used as a reference for irradiation experiments as irradiation makes a similar structural alteration, like a low-grade shock metamorphism. 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 - Gyollai, Ildikó AU - Biri, Sándor AU - Juhász, Zoltán AU - Király, Csilla AU - Pal, B.D. AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Szavai, P. AU - Szklenár, Tamás AU - Kereszturi, Ákos TI - Irradiation induced mineral changes of NWA10580 meteorite determined by infrared analysis JF - ASTRONOMY & ASTROPHYSICS J2 - ASTRON ASTROPHYS VL - 683 PY - 2024 PG - 12 SN - 0004-6361 DO - 10.1051/0004-6361/202347467 UR - https://m2.mtmt.hu/api/publication/34499100 ID - 34499100 N1 - Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary HUN-REN, Institute for Nuclear Research, Debrecen, Hungary Konkoly Thege Astronomical Institute, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary Csfk, Mta Centre of Excellence Budapest, Konkoly Thege Miklós út 15-17., Budapest, 1121, Hungary Eotvos Lorand University of Sciences (ELTE), Budapest, Hungary Geographical Institute, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary Department of Systems Innovation, School of Engineering, The University of Tokyo, Tokyo, Japan Atomki, Institute of Nuclear Research, Debrecen, 4026, Hungary Export Date: 25 March 2024 CODEN: AAEJA Correspondence Address: Pál, B.D.; Konkoly Thege Astronomical Institute, Hungary; email: pal.bernadett@csfk.org Correspondence Address: Kereszturi, A.; Konkoly Thege Astronomical Institute, Hungary; email: kereszturi.akos@csfk.org AB - Identifying minerals on asteroid surfaces is difficult as space weathering modifies the minerals' infrared spectra. This should be better understood for proper interpretation. We simulated the space weathering effects on a meteorite and recorded the alterations of the crystalline structure, such as the change in peak positions and full width at half maximum values. We used proton irradiation to simulate the effects of solar wind on a sample of NWA 10580 CO3 chondrite meteorites. After irradiation in three gradually increased steps with 1 keV ion energy, we used infrared microscopic reflectance and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) to identify and understand the consequences of irradiation. We find negative peak shifts after the first and second irradiations at pyroxene and feldspar minerals, similarly to the literature, and this shift was attributed to Mg loss. However, after the third irradiation a positive change in values in wavenumber emerged for silicates, which could come from the distortion of SiO tetrahedra, resembling shock deformation. The full width at half maximum values of major bands show a positive (increasing) trend after irradiations in the case of feldspars, using IR reflection measurements. Comparing DRIFTS and reflection infrared data, the peak positions of major mineral bands were at similar wavenumbers, but differences can be observed in minor bands . We measured the spectral changes of meteorite minerals after high doses of proton irradiation for several minerals. We show the first of these measurements for feldspars; previous works only presented pyroxene, olivine, and phyllosilicates. 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 - JOUR AU - Thiemens, MM. AU - Shaheen, R AU - Gerritzen, CT. AU - Gyollai, Ildikó AU - Chong, K AU - Popp, F AU - Koeberl, C AU - Thiemens, MH. AU - Moynier, F TI - Zinc, carbon, and oxygen isotopic variations associated with the Marinoan deglaciation JF - MINERALOGY AND PETROLOGY J2 - MINER PETROL VL - 117 PY - 2023 IS - 2 SP - 373 EP - 386 PG - 14 SN - 0930-0708 DO - 10.1007/s00710-023-00827-0 UR - https://m2.mtmt.hu/api/publication/34019604 ID - 34019604 N1 - School of Geosciences, University of Edinburgh, Old College, South Bridge, Edinburgh, EH8 9YL, United Kingdom Analytical, Environmental and Geo- Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, Elsene, 1050, Belgium Department of Chemistry, University of California, San Diego, 9500 Gilman Drive # 0356, La Jolla, CA 92093-0356, United States Department of Lithospheric Research, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria Department of Geology, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria Institut de Physique du Globe de Paris, Université Paris Cité, CNRS UMR 7154, 1 rue, Paris, Jussieu, 75238, France Export Date: 19 February 2024 Correspondence Address: Thiemens, M.M.; School of Geosciences, United Kingdom; email: Maxwell.M.Thiemens@gmail.com AB - The "Snowball Earths" were cataclysmic events during the late Neoproterozoic's Cryogenian period (720-635 Ma) in which most, if not all, of Earth’s surface was covered in ice. Paleoenvironmental reconstructions of these events utilize isotopic systems, such as Δ 17 O and barium isotopes of barites. Other isotopic systems, such as zinc (Zn), can reflect seawater composition or environmental conditions (e.g., temperature changes) and biological productivity. We report here a multi-isotopic C, O, and Zn data set for carbonates deposited immediately after the Marinoan glaciation (635 Ma) from the Otavi Group in northern Namibia. In this study, we chemically separated calcite and non-calcitic carbonate phases, finding isotopically distinct carbon and oxygen isotopes. These could reflect changes in the source seawater composition and conditions during carbonate formation. Our key finding is largescale Zn isotopic variations over the oldest parts of the distal foreslope cap carbonate sections. The magnitude of variation is larger than any found throughout post-snowball cap carbonates to date, and in a far shorter sequence. This shows a heretofore undiscovered difficulty for Zn isotopic interpretations. The primary Zn sources are likely to be aeolian or alluvial, associated with the massive deglaciation related run-off from the thawing continent and a greater exposed surface for atmospheric aerosol entrainment. The samples with the lightest Zn isotopic compositions (δ 66 Zn < 0.3 ‰) potentially reflect hydrothermally sourced Zn dominating the carbonates’ Zn budget. This finding is likely unique to the oldest carbonates, when the meltwater lid was thinnest and surface waters most prone to upwelling of hydrothermally dominated Snowball Earth brine. On the other hand, local variations could be related to bioproductivity affecting the Zn isotopic composition of the seawater. Similarly, fluctuations in sea-level could bring the depositional site below and above a redoxcline, causing isotopic variations. These variations in Zn isotope ratios preclude the estimation of a global Zn isotopic signature, potentially indicating localized resumption of export production. 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 - Gyollai, Ildikó AU - Chatzitheodoridis, E AU - Kereszturi, Ákos AU - Szabó, Máté Zoltán TI - Multiple generation magmatic and hydrothermal processes in a Martian subvolcanic environment based on the analysis of Yamato‐000593 nakhlite meteorite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 58 PY - 2023 IS - 2 SP - 218 EP - 240 PG - 23 SN - 1086-9379 DO - 10.1111/maps.13950 UR - https://m2.mtmt.hu/api/publication/33632051 ID - 33632051 N1 - Funding Agency and Grant Number: NKFIH [K_138594, GINOP-2.3.2-15-2016-00003]; Hungarian State Eotvos Scholarship of the Tempus Public Foundation (Hungary) [MAE_ O2016_1]; [COST-TD1308]; [STSM-010215053644-53644]; [COOP-NN-116927] Funding text: The authors are grateful to the National Technical University of Athens. This work was also supported by the K_138594 fund of NKFIH. We would also like to thank Dr Ian Lyon, from the University of Manchester, Department of Earth and Environmental Sciences, for providing meteorite samples from their collection. The first part of this work was also supported by COST-TD1308, and related STSM-010215053644-53644 grant and COOP-NN-116927 projects. The measurements of this project have been supported by the GINOP-2.3.2-15-2016-00003 grant of the NKFIH. The presentation of this work on EANA (European Astrobiology Network Association) Meeting 2016 is supported by Hungarian State E_otv_os Scholarship (MAE_ O2016_1) of the Tempus Public Foundation (Hungary). LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Kereszturi, Ákos AU - Chatzitheodoridis, E AU - Kereszty, Zs AU - Szabó, Máté Zoltán AU - Király, Csilla AU - Szalai, Zoltán TI - Formation and shock impact history of the Csatalja ordinary chondrite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 58 PY - 2023 IS - 1 SP - 2 EP - 24 PG - 23 SN - 1086-9379 DO - 10.1111/maps.13931 UR - https://m2.mtmt.hu/api/publication/33525794 ID - 33525794 N1 - Export Date: 26 December 2022 CODEN: MPSCF LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Gyollai, Ildikó AU - Juhász, Zoltán AU - Pál, Bernadett AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla TI - Review of meteorite irradiation tests to support next C-type asteroid missions JF - MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY J2 - MON NOT R ASTRON SOC VL - 519 PY - 2023 IS - 3 SP - 3947 EP - 3957 PG - 11 SN - 0035-8711 DO - 10.1093/mnras/stac3587 UR - https://m2.mtmt.hu/api/publication/33334427 ID - 33334427 AB - Effect of space weathering of airless asteroids could be better understood by artificial irradiation tests on meteorites in laboratories. This work surveys the infrared and Raman analysis based interpretation of simulated charged particle irradiation tests in order to better understand near future observational possibilities of asteroid visiting missions and also to support the planning of next missions and directions of detector improvement. Recent works properly targeted different meteors and meteor relevant minerals, evaluating bulk meteorite spectra, During the irradiation tests He+, (Ne+, Kr+) and Ar+ ions were used with fluxes characteristic for inner planetary system solar wind, considering 1-10 million year exposure durations. Although main meteorite minerals were irradiated and analysed, one missing aspect is that only bulk analysis have been done, not minerals separately in their original embedded context. Some Earth based mineral references were also analysed, however they might not necessary behave similar to the same type of reference minerals, and irradiation effect is poorly known for feldspar, troilite, magnetite. Darkening should be also further analysed for separate minerals too, together with the record of peak shape and position changes. Infrared ATR analysis might still provide such data in the future using the recently emerged technology, as well as Raman analysis - however for flyby missions’ infrared is the useful method while Raman can be used only at in-situ missions. The overview including the tables to support the identification of specific missing information related gaps in our current knowledge and directions for future research. LA - English DB - MTMT ER - TY - JOUR AU - Kereszturi, Ákos AU - Gyollai, Ildikó AU - Szabó, Máté Zoltán AU - Skultéti, Ágnes TI - Comparison of two different infrared spectral analysis based evaluation of impact induced shock events of the Chelyabinsk meteorite JF - ICARUS J2 - ICARUS VL - 394 PY - 2023 SN - 0019-1035 DO - 10.1016/j.icarus.2022.115377 UR - https://m2.mtmt.hu/api/publication/33315267 ID - 33315267 N1 - Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Hungary Institute of Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungary Geographical Institute, Research Centre for Astronomy and Earth Sciences, Hungary CSFK, MTA Centre of Excellence, Budapest, Konkoly Thege Miklós út 15-17.H-1121, Hungary European Astrobiology Institute, Strasbourg, France Export Date: 10 January 2023 CODEN: ICRSA Correspondence Address: Gyollai, I.; Institute of Geological and Geochemical Research, Hungary; email: gyollai.ildiko@csfk.org LA - English DB - MTMT ER -