@article{MTMT:34765652,
	title = {Results from the further development of CGI inversion on simulation and field data systems},
	url = {https://m2.mtmt.hu/api/publication/34765652},
	author = {Gyulai, Ákos and Turai, Endre and Baracza, Mátyás Krisztián and Nádasi, Endre and Dankó, George},
	doi = {10.1556/24.2023.00131},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {67},
	unique-id = {34765652},
	issn = {1788-2281},
	abstract = {A new series expansion-based method, the Combined Geoelectric Weighted Inversion (CGWI) procedure is presented and tested by using synthetic and in-field measured datasets. The method is an improved version of the Combined Geoelectric Inversion (CGI) robustified by involving Cauchy-Steiner weights in an Iteratively Reweighted Least Squares technique. The new procedure is compared to the Fourier series expansion-based 1.5D and the CGI methods as well as to the broadly applied RES2DINV inversion procedure. The field measurements are performed during stone exploration in an active quarry on the south-western slopes of the Mátra mountains, in northern Hungary. It is shown that the CGWI method gives stable and robust parameter estimation with acceptable accuracy. The comparison with other inversion methods is based on data distances, estimation errors and correlation parameters calculated on the base of the parameter correlation matrix.},
	year = {2024},
	eissn = {1789-3348},
	orcid-numbers = {Nádasi, Endre/0000-0001-5325-6657}
}

@article{MTMT:34230758,
	title = {Stable hydrogen isotope compositions of tourmalines from the Sopron metamorphic complex: Metamorphic closure temperature and fluid composition},
	url = {https://m2.mtmt.hu/api/publication/34230758},
	author = {Demény, Attila},
	doi = {10.1556/24.2023.00137},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {34230758},
	issn = {1788-2281},
	abstract = {Stable hydrogen isotope compositions of metamorphic rocks and minerals can provide information on the origin of metamorphic fluids, which is especially important in systems that had experienced multiple metamorphic events. The Sopron orthogneiss-micaschist complex is a good target as it records signs of Variscan and Alpine metamorphic events as well as Variscan granitic magmatism. In this study tourmaline-bearing rocks (pegmatitic orthogneisses and kyanite-chlorite-muscovite schists) of the Sopron metamorphic complex were sampled and their tourmaline grains were analyzed for stable hydrogen isotope compositions (δ 2 H). The δ 2 H values (−23 ± 1‰, relative to V-SMOW) are in accordance with a fluid flux from devolatilization of subducted, seawater-containing rocks. Tourmaline-chlorite hydrogen isotope fractionations correspond to about 550 °C, indicating that δ 2 H values formed close to peak metamorphic temperatures are preserved without retrograde isotope exchange during cooling.},
	year = {2023},
	eissn = {1789-3348},
	pages = {178-182},
	orcid-numbers = {Demény, Attila/0000-0003-0522-9018}
}

@article{MTMT:34180795,
	title = {Comparison of different preparation methods for oxygen isotope determination of phosphate in mammal tooth enamel},
	url = {https://m2.mtmt.hu/api/publication/34180795},
	author = {Kiss, Gabriella Ilona and Szabó, Péter and Túri, Marianna and Futó, István and Kovács, János and Palcsu, László},
	doi = {10.1556/24.2023.00132},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {34180795},
	issn = {1788-2281},
	abstract = {We tested several sample pre-treatment protocols for the study of oxygen isotope ratios in the phosphate phase of mammalian enamel of ten different fossil samples. We investigated the effect of different pre-treatment methods and the duration of the hydrogen fluoride treatment on enamel samples from skeletal phosphate with known δ 18 O values. The samples had been measured previously, so we could compare the ratios measured in our laboratory with the previous values to choose the best chemical preparation procedure. Four pre-soaking methods and two different time intervals of 2 mol dm −3 hydrogen fluoride treatment were compared during our experiments. In our experimental conditions, the distilled water wash and the 6 h of soaking in hydrogen fluoride gave the closest results to the expected δ -values. The steps of the tested preparation processes were repeated at least three times on each sample, so the reproducibility of the process could be also investigated.},
	year = {2023},
	eissn = {1789-3348},
	pages = {144-157},
	orcid-numbers = {Szabó, Péter/0000-0003-0827-3583; Kovács, János/0000-0001-7742-5515}
}

@article{MTMT:33733907,
	title = {Long-term performance of simultaneous measurement of stable isotopes of oxygen and carbon in cellulose with a high-temperature pyrolysis/gas chromatography/isotope ratio mass spectrometry system at the Institute for Geological and Geochemical Research},
	url = {https://m2.mtmt.hu/api/publication/33733907},
	author = {Kern, Zoltán and Llanos Campana, Daniela Maria and Hegyi, IN},
	doi = {10.1556/24.2023.00134},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {33733907},
	issn = {1788-2281},
	abstract = {A high-temperature pyrolysis/gas chromatography/isotope ratio mass spectrometry system was established at the Institute for Geological and Geochemical Research in 2013. A dedicated field of application of the system is the simultaneous measurement of stable carbon and oxygen isotope ratios in the cellulose of modern, relict and subfossil plant tissues and sediments. The measurement protocol was fine-tuned during the first year of operation and documented in detail in this report. To quantify the long-term reproducibility of the simultaneous measurement of stable isotopes of oxygen and carbon in cellulose, a 2σ range inferred from repeated measurements of a Quality Assurance standard can be recommended: 0.16 and 0.20‰, for δ 13 C and δ 18 O, respectively. An extensive set of samples with known pyrolysis-based δ 13 C data was analyzed in combustion mode and the paired results were used to assess the necessity of adjustment of the pyrolysis-based δ 13 C measurements. The variances of the two datasets were not significantly different; the slope (intercept) of the regression was indistinguishable from unity (zero), suggesting that probably owing to the relatively frequent cleaning of the pyrolysis furnace, pyrolysis-based δ 13 C data neither suffer from a variance bias nor require a specific adjustment.},
	year = {2023},
	eissn = {1789-3348},
	pages = {137-143},
	orcid-numbers = {Kern, Zoltán/0000-0003-4900-2587}
}

@article{MTMT:34174919,
	title = {Pebbles, graphs and equilibria: Higher order shape descriptors for sedimentary particles},
	url = {https://m2.mtmt.hu/api/publication/34174919},
	author = {Ludmány, Balázs and Domokos, Gábor},
	doi = {10.1556/24.2023.00135},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {34174919},
	issn = {1788-2281},
	abstract = {While three-dimensional measurement technology is spreading fast, its meaningful application to sedimentary geology still lacks content. Classical shape descriptors (such as axis ratios, circularity of projection) were not inherently three-dimensional, because no such technology existed. Recently a new class of three-dimensional descriptors, collectively referred to as mechanical descriptors, has been introduced and applied for a broad range of sedimentary particles. First-order mechanical descriptors (registered for each pebble as a pair {S, U} of integers), refer to the respective numbers of stable and unstable static equilibria and can be reliably detected by hand experiments. However, they have limited ability of distinction, as the majority of coastal pebbles fall into primary class . Higher-order mechanical descriptors offer a more refined distinction. However, for the extraction of these descriptors (registered as graphs for each pebble), hand measurements are not an option and even computer-based extraction from 3D scans offers a formidable challenge. Here we not only describe and implement an algorithm to perform this task, but also apply it to a collection of 271 pebbles with various lithologies, illustrating that the application of higher-order descriptors is a viable option for geologists. We also show that the so-far uncharted connection between the two known secondary descriptors, the so-called Morse–Smale graph and the Reeb-graph, can be established via a third order descriptor which we call the master graph.},
	year = {2022},
	eissn = {1789-3348},
	pages = {158-177},
	orcid-numbers = {Ludmány, Balázs/0000-0001-5373-7610}
}

@article{MTMT:33118230,
	title = {Applications of automated Petrel workflows in 3D reservoir geologic modelling – A case study},
	url = {https://m2.mtmt.hu/api/publication/33118230},
	author = {Nemes, Istvan},
	doi = {10.1556/24.2022.00129},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {33118230},
	issn = {1788-2281},
	abstract = {Mature fields have been playing a significant role in the oil and gas realm recently, and redevelopment and optimization efforts are being made globally to prolong the lifetime of these resources. The aim of this study is to showcase the benefits of hydrocarbon reservoir modelling, with a special focus on various aspects of Petrel workflows.},
	year = {2022},
	eissn = {1789-3348},
	pages = {122-136}
}

@article{MTMT:33093510,
	title = {Fully spherical 3D datasets on sedimentary particles: Fast measurement and evaluation},
	url = {https://m2.mtmt.hu/api/publication/33093510},
	author = {Fehér, Eszter and Havasi-Tóth, Balázs and Ludmány, Balázs},
	doi = {10.1556/24.2022.00124},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {33093510},
	issn = {1788-2281},
	abstract = {Recently it became increasingly evident that the statistical distributions of size and shape descriptors of sedimentary particles reveal crucial information on their evolution and may even carry the fingerprints of their provenance as fragments. However, to unlock this trove of information, measurement of traditional geophysical shape descriptors (mostly detectable on 2D projections) is not sufficient; fully spherical 3D imaging and mathematical algorithms suitable to extract new types of inherently 3D shape descriptors are necessary. Available 3D imaging technologies force users to choose either speed or full sphericity. Only partial morphological information can be extracted in the absence of the latter (e.g., LIDAR imaging). In the case of fully spherical imaging, speed was proved to be prohibitive for obtaining meaningful statistical samples, and inherently 3D shape descriptors were not extracted. Here we present a new method by complementing a commercial, portable 3D scanner with simple hardware to quickly obtain fully spherical 3D datasets from large collections of sedimentary particles. We also present software for the automated extraction of 3D shapes and automated measurement of inherently 3D-shape properties. This technique allows for examining large samples without the need for transportation or storage of the samples, and it may also facilitate the collaboration of geographically distant research groups. We validated our software on a large sample of pebbles by comparing previously hand-measured parameters with the results of automated shape analysis. We also tested our hardware and software tools on a large pebble sample in Kawakawa Bay, New Zealand.},
	year = {2022},
	eissn = {1789-3348},
	pages = {111-121},
	orcid-numbers = {Fehér, Eszter/0000-0002-4022-7221; Ludmány, Balázs/0000-0001-5373-7610}
}

@article{MTMT:33628417,
	title = {Cave monitoring in Hungary: An overview},
	url = {https://m2.mtmt.hu/api/publication/33628417},
	author = {Czuppon, György and Demény, Attila and Leél-Őssy, Szabolcs and Stieber, J. and Óvári, Mihály and Dobosy, Péter and Berentés, A. and Kovács, R.},
	doi = {10.1556/24.2021.00109},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {33628417},
	issn = {1788-2281},
	year = {2022},
	eissn = {1789-3348},
	pages = {26-39},
	orcid-numbers = {Czuppon, György/0000-0002-7231-6042; Demény, Attila/0000-0003-0522-9018}
}

@article{MTMT:32845875,
	title = {Nb–Ta mineralization in Ti-oxide minerals from the Bagolyhegy Metarhyolite Formation (Bükk Mountains, NE Hungary)},
	url = {https://m2.mtmt.hu/api/publication/32845875},
	author = {Gál, Péter and Németh, Norbert and Szakáll, Sándor and Zajzon, Norbert and Fehér, Béla and Dunkl, István},
	doi = {10.1556/24.2021.00101},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {32845875},
	issn = {1788-2281},
	year = {2022},
	eissn = {1789-3348},
	pages = {1-13},
	orcid-numbers = {Németh, Norbert/0000-0002-4264-5136}
}

@article{MTMT:32795968,
	title = {Petrographic evidences of open-system magmatic processes in the felsic rocks of the northern part of the Ditrău Alkaline Massif (Eastern Carpathians, Romania)},
	url = {https://m2.mtmt.hu/api/publication/32795968},
	author = {Kiri, Luca and Szemerédi, Máté and Pál-Molnár, Elemér},
	doi = {10.1556/24.2022.00113},
	journal-iso = {CENT EUR GEOL},
	journal = {CENTRAL EUROPEAN GEOLOGY},
	volume = {65},
	unique-id = {32795968},
	issn = {1788-2281},
	year = {2022},
	eissn = {1789-3348},
	pages = {49-76},
	orcid-numbers = {Kiri, Luca/0000-0002-0314-6641; Szemerédi, Máté/0000-0002-7432-8418; Pál-Molnár, Elemér/0000-0002-9606-0133}
}