TY - JOUR AU - Lodowski, Damian G. AU - Szives, Ottilia AU - Virág, Attila AU - Grabowski, Jacek TI - The latest Jurassic–earliest Cretaceous climate and oceanographic changes in the Western Tethys: The Transdanubian Range (Hungary) perspective JF - SEDIMENTOLOGY J2 - SEDIMENTOLOGY PY - 2024 SN - 0037-0746 DO - 10.1111/sed.13194 UR - https://m2.mtmt.hu/api/publication/34812376 ID - 34812376 AB - The Jurassic/Cretaceous transition was characterized by several distinct palaeoenvironmental processes and events, amongst which some of the best known are the late Tithonian–early Berriasian aridization and the late Berriasian tectonic reactivation in the Neotethyan Collision Belt. This study aims to reconstruct the latest Jurassic–earliest Cretaceous palaeoenvironment and its evolution in the area of the Transdanubian Range (Hárskút and Lókút successions, Hungary), and provide new data on the relation between climate changes, palaeoceanography and marine ecosystems. Herein, calcareous nannofossil and geochemical data are presented and put into a geochronological framework in order to evaluate and compare palaeoenvironmental signals recorded in the two studied successions; the resultant scenario is compared with published literature data from both the western Tethyan region and northern Europe. Accordingly, in the Transdanubian Range, the relatively humid climate of the early Tithonian was followed by the late Tithonian–early Berriasian arid phase and the late Berriasian humidification. Besides, two intervals of palaeoceanographic perturbations were documented in the upper Tithonian–lowermost Berriasian (OD I), and the lower/upper Berriasian transition beds (OD II); these are manifested by the record of seafloor hypoxia and elevated accumulations of micronutrients, as well as changes in calcareous nannofossil assemblages. In the view of this study, the most probable trigger of the late Tithonian–early Berriasian aridization was a restriction in the atmospheric circulation (including monsoons), which was forced by climate cooling and lowering thermal gradient between landmasses and the ocean. Under such conditions, the mechanism of a wind‐induced water mixing might become less efficient, driving seawater stratification, seafloor hypoxia and increased burial of nutrients. Although the humid climate of the late Berriasian likely resumed the monsoon‐type circulation, the tectonic reactivation and uplift in the NeoTethyan Collision Belt might have effectively separated the Bakony Basin from the ‘open’ NeoTethys, which hampered the marine circulation and efficient water mixing in the former. LA - English DB - MTMT ER - TY - JOUR AU - Koutecký, V. AU - Mysliveček, J. AU - Rapprich, V. AU - Laufek, F. AU - Benkó, Zsolt AU - Sakala, J. TI - First evidence of Pinaceae and Fagaceae in the fossil wood record of the České středohoří Mts. (Czech Republic): A comprehensive study of fossiliferous sites in pyroclastic rocks surrounding the late Oligocene Milá stratovolcano JF - REVIEW OF PALAEOBOTANY AND PALYNOLOGY J2 - REV PALAEOBOT PALYNO VL - 325 PY - 2024 SN - 0034-6667 DO - 10.1016/j.revpalbo.2024.105097 UR - https://m2.mtmt.hu/api/publication/34794412 ID - 34794412 N1 - Export Date: 17 April 2024 CODEN: RPPYA Correspondence Address: Koutecký, V.; Institute of Geology and Palaeontology, Albertov 6, Czech Republic; email: koudasml@post.cz LA - English DB - MTMT ER - TY - JOUR AU - Oravecz, Éva AU - Benkó, Zsolt AU - Arató, Róbert AU - Dunkl, István AU - Héja, G AU - Kövér, Szilvia AU - Németh, Tibor AU - Fodor, László TI - Age, Kinematic and Thermal Constraints of Syn‐Orogenic Low‐Temperature Deformation Events: Insights From Thermochronology and Structural Data of the Nekézseny Thrust (Alpine‐Carpathian‐Dinaric Area) JF - TECTONICS J2 - TECTONICS VL - 43 PY - 2024 IS - 4 PG - 28 SN - 0278-7407 DO - 10.1029/2023TC008189 UR - https://m2.mtmt.hu/api/publication/34764189 ID - 34764189 N1 - Department of Physical and Applied Geology, Institute of Geography and Earth Sciences, Eötvös Loránd University, Budapest, Hungary Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen, Hungary Department of Mineralogy and Geology, Institute of Earth Sciences, University of Debrecen, Debrecen, Hungary Department of Sedimentology and Environmental Geology, Geoscience Center, University of Göttingen, Göttingen, Germany Supervisory Authority of Regulatory Affairs, Budapest, Hungary Hungarian Research Network, Institute of Earth Physics and Space Science, Sopron, Hungary Department of Geology and Meteorology, Institute of Geography and Earth Sciences, University of Pécs, Pécs, Hungary Export Date: 9 April 2024 Correspondence Address: Oravecz, É.; Department of Physical and Applied Geology, Hungary; email: orav.eva@gmail.com AB - Unraveling the age and kinematics of low temperature deformation events is crucial in understanding the late‐stage evolution of orogens. However, accurate age constraints can often be challenging to obtain due to unideal outcrop conditions, large sedimentary hiatuses or the lack of well‐defined thermal events. In this study, we show on the example of the Nekézseny Thrust, a poorly exposed late orogenic thrust in the southern Western Carpathians, that a combined approach of structural analysis and multi‐method thermochronology can provide the necessary temporal, kinematic and thermal constraints for a detailed reconstruction of the deformation history. While structural mapping revealed that the Late Cretaceous Uppony Gosau Basin in the footwall of the Nekézseny Thrust underwent a significant post‐Campanian and pre‐Miocene shortening, K/Ar dating of fault gouge samples from the main fault zone constrained the primary thrusting event to the Maastrichtian. Based on the acquired apatite fission‐track and (U‐Th)/He ages, subsequent heating of the Upper Cretaceous sediments due to tectonic burial was limited to 75–100°C, followed by deformation‐related and gradual cooling between the Eocene and Early Miocene. Considering the reconstructed deformation history, as well as the large‐scale tectonic affinity of the displaced units in its footwall and hanging wall, the Nekézseny Thrust is a far‐traveled (ca. 600 km) segment of the Late Cretaceous Alps‐Dinarides contact zone, whose development was linked to the switch from lower plate to upper plate position with respect to the Sava Zone and Alpine Tethys sutures, respectively. LA - English DB - MTMT ER - TY - JOUR AU - Sági, Tamás AU - Józsa, Sándor AU - Janka, Péter AU - Káposztás, Viktória AU - Oelberg-Pánczél, Emese AU - Szendrei, Zsolt AU - Szücs, Levente Csaba AU - Virág, Attila TI - Csiszolt kőeszközök nyersanyagtípusainak csoportosítása mágneses szuszceptibilitás, tömeg, térfogat, sűrűség és magasság alapján : Esettanulmány Bátaszék-Alsónyékről JF - ARCHEOMETRIAI MŰHELY J2 - ARCHEOMETRIAI MŰHELY VL - 21 PY - 2024 IS - 2 SP - 89 EP - 100 PG - 12 SN - 1786-271X DO - 10.55023/issn.1786-271X.2024-009 UR - https://m2.mtmt.hu/api/publication/34751077 ID - 34751077 AB - A csiszolt kőeszközök nyersanyagának pontos meghatározására az egyszerű makroszkópos kőzethatározástól kezdve a legkorszerűbb műszeres vizsgálatokig számos módszert alkalmaznak. A gyakran nagyszámú kőeszközből álló leletegyüttesek egyes nyersanyagtípusainak reprezentatív, nagyműszeres vizsgálatra szánt példányainak kiválasztása jelentős kihívás a geológusok számára. Jelen kutatás célja, hogy kísérletet tegyünk csiszolt kőeszközök nyersanyagtípusai közötti különbségek meghatározására egyszerűen mérhető jellemzőik (tömeg, térfogat, sűrűség, mágneses szuszceptibilitás és vastagság) standardizált főkomponens elemzése alapján. LA - Hungarian DB - MTMT ER - TY - JOUR AU - Román, Zsófia AU - Segesdi, Martin AU - Sebe, Krisztina AU - Földes, Tamás AU - Bakrač, Koraljka AU - Virág, Attila AU - Botfalvai, Gábor TI - Palaeontological and taphonomical investigations of the exceptionally rich concentration of Miocene vertebrate coprolites from Pécs-Danitzpuszta (Hungary, Mecsek Mts.) JF - HISTORICAL BIOLOGY J2 - HIST BIOL PY - 2024 PG - 16 SN - 0891-2963 DO - 10.1080/08912963.2024.2324435 UR - https://m2.mtmt.hu/api/publication/34728890 ID - 34728890 N1 - Institute of Geography and Earth Sciences, Department of Paleontology, Eötvös Loránd University (ELTE), Budapest, Hungary Department of Zoology, Hungarian Natural History Museum, Budapest, Hungary Department of Paleontology and Geology, Hungarian Natural History Museum, Budapest, Hungary HUN-REN-MTM-ELTE Research Group for Paleontology, Budapest, Hungary TOMOGEO Kft, Szolnok, Hungary Department of Geology, Croatian Geological Survey, Zagreb, Croatia Institute of Geography and Earth Sciences, Department of Petrology and Geochemistry, Eötvös Loránd University (ELTE), Budapest, Hungary Institute of Earth Sciences, Department of Mineralogy & Geology, University of Debrecen, Debrecen, Hungary Export Date: 18 March 2024 Correspondence Address: Román, Z.; Institute of Geography and Earth Sciences, Pázmány Péter sétány 1/c, Hungary; email: zsofia.m.roman@gmail.com AB - Thousands of coprolites have been collected from the Upper Miocene (Tortonian/Pannonian) sands of the Pécs-Danitzpuszta sand pit, one of the most important mixed Neogene vertebrate localities in Hungary. Although, the locality has been known for centuries, the coprolites have not been investigated in detail. We describe these fossils and explore their palaeoecological significance. Coprolites were examined with thin sections, X-ray powder diffraction and computed tomography. Their surface is mostly smooth, desiccation cracks were not observed. All coprolites mainly consist of apatite, indicating most probably a carnivorous diet. No evidence of herbivory has been found so far. The coprolites contain remains belonging to several groups: ostracod carapaces, bivalve shells, vertebrae from bony fishes, fish scales, as well as teeth. The CT scans show inhomogeneities in the matrix; however, in most cases they do not reliably indicate inclusions. The taphonomical features suggest rapid burial and most likely an aquatic origin. The spiral morphotype could be attributed to fishes with spiral intestinal valves. Teeth of reef-associated fish taxa indicate Badenian age for some specimens, though the coprolite assemblage might include older and younger specimens as well. LA - English DB - MTMT ER - TY - JOUR AU - Dawoud, Maher AU - Khalaf, Ibrahim M. AU - El-Dokouny, Hanaal AU - Rady, Ali Shebl AU - El-Desouky, Hamdy A. AU - El-lithy, Mai A. TI - Applications of remote sensing in lithological mapping of east Gabal Atud area, central eastern desert, Egypt JF - GEO- ECO-MARINA J2 - GEO- ECO-MARINA VL - 29 PY - 2023 SP - 125 EP - 146 PG - 22 SN - 1224-6808 UR - https://m2.mtmt.hu/api/publication/34755134 ID - 34755134 LA - English DB - MTMT ER - TY - JOUR AU - Cserép, Barbara AU - Szemerédi, Máté AU - Harangi, Szabolcs AU - Erdmann, S AU - Bachmann, O AU - Dunkl, István AU - Seghedi, I AU - Mészáros, K AU - Kovács, Zoltán AU - Virág, Attila AU - Ntaflos, T AU - Schiller, D AU - Molnár, Kata AU - Haranginé Lukács, Réka TI - Constraints on the pre-eruptive magma storage conditions and magma evolution of the 56–30 ka explosive volcanism of Ciomadul (East Carpathians, Romania) JF - CONTRIBUTIONS TO MINERALOGY AND PETROLOGY J2 - CONTRIB MINERAL PETR VL - 178 PY - 2023 IS - 12 PG - 31 SN - 0010-7999 DO - 10.1007/s00410-023-02075-z UR - https://m2.mtmt.hu/api/publication/34402475 ID - 34402475 AB - A detailed mineral-scale study was conducted on pumices of the latest, dominantly explosive eruption epoch (56–30 ka) of Ciomadul, the youngest, long-dormant volcano in eastern-central Europe for characterizing the magma storage system and for understanding better the changes in eruption style from effusive to explosive. The mineral cargo of dacitic pumices enables us to constrain the conditions of the pre-recharge crystal mush, the recharge magmas and the post-recharge magma prior to eruptions. A careful evaluation of the results yielded by various thermometers, barometers, oxybarometers, chemometers and hygrometers as well as direct comparison with experimental data were necessary to select the appropriate techniques and therefore to constrain the conditions for the Ciomadul magmatic system. Beneath the volcano, a felsic crystal mush body is inferred at 8–12 km depth comprising slightly oxidized (0.5–1.6 ∆NNO), low-temperature (680–750 °C), highly crystalline magma. This zone is underlain by a deep magma storage zone with less evolved, hot (> 900 °C) magma at 16–40 km depth. The dominantly explosive volcanism after the effusive eruptions (160–90 ka) can be explained by the ascent of distinct recharge magmas. They contained high-Mg (MgO > 18 wt%) amphibole, which could have crystallized from ultrahydrous (H 2 O > 8 wt%) magma at near-liquidus conditions. The rates of amphibole overgrowth and microphenocryst formation require weeks to months for the magma mixing and the eruption events. The hybridized melt became more oxidized and contained dissolved water in around 5.5 wt% at temperature of 790–830 °C calculated from the re-equilibrated Fe-Ti oxides. These magma properties along with the degree of crystallinity (27–38 vol% crystals) favored rapid magma ascent and an explosive style eruption. Thus, the strongly hydrous nature of the recharge magma in addition to the crystallinity and H 2 O content of the pre-eruption magma plays an important role in controlling the eruption style. LA - English DB - MTMT ER - TY - JOUR AU - Abdel-Rahman, Ahmed M. AU - El-Desoky, Hatem M. AU - Rady, Ali Shebl AU - El-Awny, Hamada AU - Amer, Yahia Z. AU - Csámer, Árpád TI - The geochemistry, origin, and hydrothermal alteration mapping associated with the gold-bearing quartz veins at Hamash district, South Eastern Desert, Egypt JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 13 PY - 2023 IS - 1 PG - 27 SN - 2045-2322 DO - 10.1038/s41598-023-42313-9 UR - https://m2.mtmt.hu/api/publication/34397785 ID - 34397785 AB - Integrating diverse techniques and datasets, significantly enhances the accurate identification of various mineral deposits. This work aims to determine different types of mineral deposits in the Hamash district (Southern Eastern Desert, Egypt) by combining structural features (derived from ALOS PALSAR DEM), alteration zones (detected using ASTER and Sentinel-2), and ore mineralogy. Multispectral imaging, such as ASTER and Sentinel-2 satellite data, provides a cost-effective and efficient tool for lithological and hydrothermal alteration mapping utilizing selective band ratios (SBR), directed principal component analysis (DPCA), feature-oriented false-color composites (FFCC), and constrained energy minimization (CEM). The deductions drawn from the analysis of ASTER and Sentinel 2 satellite data are solidly corroborated through meticulous investigations of pre-existing lithological maps in the study area, on-site validation via fieldwork, and robust laboratory analysis, attesting to reliable results. Validation of remote sensing results was performed through field observations, petrographic investigations, X-ray diffraction technique (XRD), and SEM–EDX analyses. Based on ore mineralogy derived from XRD and SEM results the quartz-vein-associated ore minerals in the Hamash district include chalcopyrite, pyrite, hematite, goethite, bornite, covellite, and gold. According to the present paragenesis, the mineralization in the study area is classified into three types: sulfide mineralized zone, transitional zone, and supergene zone. Using an ore microscope, our studies identified that the alteration zones include gold-bearing sulfide minerals as well as the minerals goethite and malachite. In gold-bearing quartz samples, the concentrations of Cu, As, Ag, and Sb are positively correlated with Au at the degree of shear deformation. According to data gathered from the fire assay results, Au content varied from 0.027 to 57.20 ppm, along with Cu (10–6484 ppm), Ag (0.5–20.5 ppm), As (5–2046 ppm), Zn (3–1095 ppm), Pb (2–1383 ppm), and Sb (5–23). Our results confirmed that the Hamash region is one of the most important gold-bearing sites, with gold concentrations ranging from 0.027 up to 57.20 ppm. Furthermore, the current contribution highlighted four stages in the paragenetic sequence of the recorded ores, including magmatic, metamorphic, hydrothermal, and supergene by origin, indicating a considered similarity with the known Egyptian gold sites regarding host rocks, mineralization style, alteration assemblage, and several ore mineral conditions. LA - English DB - MTMT ER - TY - CHAP AU - Less, György AU - Sztanó, Orsolya AU - Kercsmár, Zs. AU - Fodor, László AU - Haranginé Lukács, Réka AU - Tóth, Kálmán AU - Knauer, József AU - Németh, András AU - Nyíri, Dániel AU - Zadravecz, Csilla AU - Daridáné, Tichy Mária AU - Benedek, Kálmán AU - Arató, Róbert AU - Zelenka, Tibor AU - Nagymarosy, András AU - Böröczky, Tamás AU - Mindszenty, Andrea AU - Selmeczi, Ildikó AU - Dávid, Árpád AU - Raucsikné Varga, Andrea Beáta AU - Benkó, Zsolt ED - Babinszki, Edit ED - Piros, Olga ED - Csillag, Gábor ED - Fodor, László ED - Gyalog, László ED - Kercsmár, Zsolt ED - Less, György ED - Haranginé Lukács, Réka ED - Sebe, Krisztina ED - Selmeczi, Ildikó ED - Szepesi, János ED - Sztanó, Orsolya TI - Paleogén. Mecsek DNy-i pereme (Szentlőrinc-Szigetvár) TS - Mecsek DNy-i pereme (Szentlőrinc-Szigetvár) T2 - Magyarország litosztratigráfiai egységeinek leírása II. PB - Szabályozott Tevékenységek Felügyeleti Hatósága CY - Budapest SN - 9789636713294 PY - 2023 SP - 15 EP - 49 PG - 35 UR - https://m2.mtmt.hu/api/publication/34342774 ID - 34342774 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Molnár, Kata AU - Lahitte, P. AU - Döncző, Boglárka AU - Arató, Róbert AU - Szepesi, János AU - Benkó, Zsolt AU - Nomade, S. AU - Gätjen, J. AU - Dibacto, S. AU - Temovski, Marjan TI - Unravelling the pre-eruptive conditions of the rhyolitic Šumovit Greben lava dome from clinopyroxene-dominant glomeroporphyritic clots JF - CONTRIBUTIONS TO MINERALOGY AND PETROLOGY J2 - CONTRIB MINERAL PETR VL - 178 PY - 2023 IS - 11 PG - 17 SN - 0010-7999 DO - 10.1007/s00410-023-02066-0 UR - https://m2.mtmt.hu/api/publication/34237365 ID - 34237365 N1 - Isotope Climatology and Environmental Research Centre, HUN-REN Institute for Nuclear Research (ATOMKI), Debrecen, Hungary GEOPS, CNRS, Université Paris-Saclay, Orsay, 91405, France Laboratory for Heritage Science, HUN-REN Institute for Nuclear Research (ATOMKI), Debrecen, Hungary Department of Sedimentology and Environmental Geology, Georg-August University, Göttingen, Germany MTA-ELTE Volcanology Research Group, Budapest, Hungary Department of Mineralogy and Geology, University of Debrecen, Debrecen, Hungary Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France Department of Mineralogy and Petrology, Georg-August University, Göttingen, Germany CNRS, IRD, INRAE, CEREGE, Aix-Marseille Université, Aix-en-Provance, 13545, France Export Date: 3 November 2023 CODEN: CMPEA Correspondence Address: Molnár, K.; Isotope Climatology and Environmental Research Centre, Hungary; email: molnar.kata@atomki.hu LA - English DB - MTMT ER -