TY - JOUR AU - Dall’Asta, N AU - Manatschal, G AU - Hoareau, G TI - Linking mineral deposits to crustal necking: insights from the Western Alps JF - MINERALIUM DEPOSITA J2 - MINER DEPOSITA VL - 59 PY - 2024 IS - 4 SP - 773 EP - 793 PG - 21 SN - 0026-4598 DO - 10.1007/s00126-023-01226-3 UR - https://m2.mtmt.hu/api/publication/34450441 ID - 34450441 N1 - Université de Pau et des Pays de l’Adour, E2S UPPA, CNRS, LFCR, Pau, France Université de Strasbourg, CNRS, ITES UMR 7063, Strasbourg, F-67084, France Export Date: 1 January 2024 Correspondence Address: Dall’Asta, N.; Université de Pau et des Pays de l’Adour, E2S UPPA, CNRS, LFCR, France; email: nicolas.dallasta@univ-pau.fr LA - English DB - MTMT ER - TY - JOUR AU - Karádi, Viktor AU - Korte, Christoph TI - Upper Carnian to Rhaetian (Upper Triassic) conodont and carbon-isotope stratigraphy of the Csővár borehole succession, Hungary JF - PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY J2 - PALAEOGEOGR PALAEOCL VL - 630 PY - 2023 SN - 0031-0182 DO - 10.1016/j.palaeo.2023.111792 UR - https://m2.mtmt.hu/api/publication/34131524 ID - 34131524 N1 - Export Date: 25 October 2023 CODEN: PPPYA Correspondence Address: Karádi, V.; Department of Palaeontology, 1/c Pázmány Péter sétány, Hungary; email: karadi.viktor@ttk.elte.hu LA - English DB - MTMT ER - TY - JOUR AU - Héja, Gábor AU - Fodor, László AU - Csillag, Gábor AU - Ortner, H AU - Kövér, Szilvia TI - Complex deformation history of the Keszthely Hills, Transdanubian Range, Hungary JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 65 PY - 2022 IS - 1 SP - 77 EP - 110 PG - 34 SN - 1788-2281 DO - 10.1556/24.2022.00114 UR - https://m2.mtmt.hu/api/publication/32795655 ID - 32795655 N1 - Cited By :1 Export Date: 2 December 2022 Correspondence Address: Héja, G.; Mining and Geological Survey of Hungary, 17-23 Columbus Str., Hungary; email: hejagabor@hotmail.com Funding details: Hungarian Scientific Research Fund, OTKA, 113013, 134873 Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH Funding text 1: The research was supported by the National Research Fund of Hungary (NKFI) OTKA, grants 113013, 134873. Discussions with Tamás Budai and János Haas are greatly acknowledged. We benefitted from the field discussion of Orsolya Sztanó and Krisztina Sebe concerning the Late Miocene sedimentation and related deformation. We are grateful for the help of Róbert Arató, János Csizmeg, Vencel Lavrotyi, Anita Nyerges and Balázs Soós, who took part in the collection of structural data. The technical help of Barbara Beke is also acknowledged. The comments of the two reviewers (Attila Petrik and Gyula Maros) and the editor (Norbert Németh) highly improved the clarity of the manuscript. LA - English DB - MTMT ER - TY - JOUR AU - Humphrey, Elliot AU - Gomez-Rivas, Enrique AU - Diego Martin-Martin, Juan AU - Neilson, Joyce AU - Salas, Ramon AU - Guimera, Joan TI - Depositional and structural controls on a fault-related dolostone formation (Maestrat Basin, E Spain) JF - BASIN RESEARCH J2 - BASIN RES VL - 34 PY - 2022 IS - 2 SP - 961 EP - 990 PG - 30 SN - 0950-091X DO - 10.1111/bre.12647 UR - https://m2.mtmt.hu/api/publication/33241347 ID - 33241347 N1 - School of Geosciences, King’s College, University of Aberdeen, Aberdeen, United Kingdom Departament de Mineralogia, Petrologia i Geologia Aplicada, Facultat de Ciències de la Terra, Universitat de Barcelona (UB), Barcelona, Spain Geomodels Research Institute, Universitat de Barcelona (UB), Barcelona, Spain Departament de Dinàmica de la Terra i de l’Oceà, Facultat de Ciències de la Terra, Universitat de Barcelona (UB), Barcelona, Spain Cited By :1 Export Date: 13 June 2023 Correspondence Address: Humphrey, E.; School of Geosciences, United Kingdom; email: e.humphrey@abdn.ac.uk Funding details: Natural Environment Research Council, NERC, 2017SGR‐824, NE/M00578X/1, PID2020‐118999GB‐I00 Funding details: Ministerio de Ciencia e Innovación, MICINN Funding details: European Regional Development Fund, ERDF Funding details: Agencia Estatal de Investigación, AEI, PGC2018‐093903‐B‐C22 Funding text 1: This research was funded by the Natural Environment Research Council (NERC) Centre for Doctoral Training (CDT) in Oil & Gas, through a PhD grant to EH (ref NE/M00578X/1). Equinor ASA are thanked for providing additional support. Funding was also provided by the Grup Consolidat de Recerc “Geologia Sedimentària” (2017SGR‐824), research project PID2020‐118999GB‐I00 (funded by the Spanish Ministry of Science and Innovation (MCIN) / State Research Agency of Spain (AEI) /10.13039/501100011033) and research projects CGL2017‐85532‐P and PGC2018‐093903‐B‐C22 and Ramón y Cajal Fellowship RYC2018‐026335‐I (to EGR), all funded by the Spanish Ministry of Science and Innovation (MCIN) / State Research Agency of Spain (AEI) / European Regional Development Fund (ERDF) /10.13039/501100011033. EH, EGR, JDM and JN conceived the idea and provided funding while field data were collected by EH, EGR and JDM. EH organised the sampling for geochemical analysis (supervised by JDM) and RS and JG provided the regional stratigraphic context and structural cross‐section. Petrographic data were collected by EH (supervised by JN). EH wrote the manuscript with edits and contributions provided by all co‐authors. AB - Fault-related dolomitisation is responsible for the development of numerous hydrocarbon reservoirs hosted in diagenetically-altered carbonates and is therefore critical to hydrocarbon exploration, subsurface storage (i.e. CO2), the formation of associated mineralisation (i.e. MVT-deposits) and for understanding the key controls on subsurface fluid flow. Multiple dolomitised outcrop analogues have been characterised in recent years, but uncertainty still remains as to the controls on dolomitisation in terms of dolostone geobody size and geometries, their distribution and how they impact reservoir quality. Late Tithonian shallow-marine carbonates at Serra Esparreguera in the Maestrat Basin (E. Spain) were partially dolomitised on the seismic scale, resulting in a spectrum of geobodies with varying degrees of spatial connectivity. Dolostone predominantly replaces Polpis Fm wackestones and packstones, and bioclastic grainstones of the Bovalar Fm. Dolostone geobodies transition through vertical stratigraphy from being massive and spatially extensive to localised stratabound bodies as textural heterogeneity increases. Irregular dolostone geometries occur in the Polpis Fm, which is texturally homogenous relative to the overlying Bovalar Fm, cross-cutting bedding in areas with high abundance of faults. Faults occur adjacent to dolostone and constrain its lateral extent across the outcrop. Dolomitisation fronts are typically sharp with morphologies affected by small-scale faults and bedding-parallel stylolites. Dolomitisation occurred under burial conditions and dolostones were later overprinted by phases of calcite and saddle dolomite cementation. The spatial distribution of dolostone is strongly influenced by the depositional heterogeneity and faults, while smaller structures (i.e. metre-scale fractures and stylolites) and bedding surfaces controlled the dolomitisation front geometry. Dolostone geobodies at Serra Esparreguera provide new insights into the structural, depositional and diagenetic controls on dolomitisation at a seismic scale, which can be used as a predictive guide to improve the understanding of carbonate reservoirs with complex paragenetic histories. LA - English DB - MTMT ER - TY - JOUR AU - Chen, Pei AU - Fu, Meiyan AU - Deng, Hucheng AU - Xu, Wang AU - Wu, Dong AU - He, Puwei AU - Guo, Hengwei TI - The Diagenetic Alteration of the Carbonate Rocks from the Permian Qixia Formation as Response to Two Periods of Hydrothermal Fluids Charging in the Central Uplift of Sichuan Basin, SW China JF - MINERALS J2 - MINERALS-BASEL VL - 11 PY - 2021 IS - 11 PG - 18 SN - 2075-163X DO - 10.3390/min11111212 UR - https://m2.mtmt.hu/api/publication/33241348 ID - 33241348 N1 - College of Energy, Chengdu University of Technology, Chengdu, 610059, China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, 610059, China PetroChina Southwest Oil & Gasfield Company, Chengdu, 646000, China Cited By :2 Export Date: 13 June 2023 Correspondence Address: Fu, M.; College of Energy, China; email: fumeiyan08@cdut.cn Funding details: SINOPEC Petroleum Exploration and Production Research Institute, PEPRIS, XNS‐JS2020‐071 Funding text 1: Acknowledgments: This research was supported by PetroChina Southwest oil and Gasfield Com‐ pany. We thank PetroChina Southwest oil and Gasfield Company of China for providing rock samples. We thank the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation in China for the measurement. Funding text 2: Funding: This research was funded by [PetroChina Southwest oil & Gasfield Company, Research Institute of Exploration and Development] grant number [XNS‐JS2020‐071]. AB - The hydrothermal fluid-carbonate rock reaction is frequently regarded to occur in deep-burial diagenesis, and the hydrothermal dissolution is usually distributed and takes place along the faults. Previous studies have suggested that there was hydrothermal fluid activity locally in the Permian Qixia Formation in Sichuan Basin, likely related to the Emeishan basalt eruption. However, the effect of hydrothermal fluids on the carbonate rocks of the Qixia Formation in the central uplift of Sichuan Basin is still unclear. Based on the characteristics and geochemical parameters of the diagenetic minerals, this study aims to reveal the diagenetic alteration related to the hydrothermal fluid-rock reaction in the Qixia Formation and reestablish the diagenetic evolution by using the timing of diagenetic mineral precipitation. The methods include petrographic observation; trace and rare earth element (REE) analysis; C, O and Sr isotope measurement; fluid inclusion temperature measurement and cathodoluminescence analysis. According to the petrographic characteristics, the dolostones are mainly of crystalline structure, namely fine-medium crystalline dolostone, meso-coarse crystalline dolostone, and coarse crystalline dolostone, with the cathodoluminescence color becoming brighter in that order. The limestones from the Qixia Formation are of the bioclastic limestone type, with no cathodoluminescence color. Compared with dolostones, limestones have higher Sr content, lower Mn content, and heavier oxygen isotopes. With the crystalline size of dolostone becoming coarser, the oxygen isotopes of dolostones tend to become lighter. The meso-coarse crystalline dolostone has the highest Mn content and negative carbon isotope. Both limestones and dolostones have an obvious positive Eu anomaly in the Qixia Formation. However, the REE patterns of fine-medium crystalline dolostones are very different from those of meso-coarse crystalline dolostones. It is credible that there were two periods of hydrothermal fluid charging, with different chemical compositions. The first period of hydrothermal fluids could laterally migrate along the sequence boundary. Fine-medium crystalline dolostones were almost completely distributed below the sequence boundary and were dolomitized during the shallow burial period. As products of the hydrothermal fluid-dolostone reaction, the saddle-shaped dolomites in the meso-coarse crystalline dolostones were the evidence of the second period of hydrothermal fluids. As a result, the dolomitization model was established according to the timing of diagenetic mineral precipitation, which can improve that the geological understanding of the effect of hydrothermal fluid activities on the carbonate rocks in the Qixia Formation. LA - English DB - MTMT ER - TY - JOUR AU - Dong, Y AU - Chen, H AU - Wang, J AU - Hou, M AU - Xu, S AU - Zhu, P AU - Zhang, C AU - Cui, Y TI - Thermal convection dolomitization induced by the Emeishan Large Igneous Province JF - MARINE AND PETROLEUM GEOLOGY J2 - MAR PETROL GEOL VL - 116 PY - 2020 PG - 15 SN - 0264-8172 DO - 10.1016/j.marpetgeo.2020.104308 UR - https://m2.mtmt.hu/api/publication/31509680 ID - 31509680 N1 - Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, 610059, China Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07403, United States State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, 610059, China Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, United States College of Energy, Chengdu University of Technology, Chengdu, 610059, China Cited By :16 Export Date: 13 June 2023 Correspondence Address: Cui, Y.; Department of Earth and Environmental Studies, United States; email: cuiy@montclair.edu Funding details: 2017ZX05008005 Funding details: National Natural Science Foundation of China, NSFC, 41888101 Funding text 1: We thank the constructive comments from the reviewers. This research was funded by NationalScience and Technology Major Project of China [Grant No. 2017ZX05008005 ] and National Natural Science Foundation of China [Grant No. 41888101 ]. Haofu Zheng, Chunyu Pang and Ke Feng are thanked for their contribution in sample preparations and fluid inclusion microthermometry measurements. AB - The mechanism of dolomitization has long been debated due to complex sedimentary and diagenetic conditions. Large-scale dolomite bodies were recently discovered in the Permian Cisuralian Qixia Formation (284-273 Ma) in the northwestern Sichuan Basin, providing an opportunity to understand the dolomitization associated with the Emeishan Large Igneous Province (ELIP). Traditionally, the dolomites in the Sichuan Basin have been interpreted as hydrothermal dolomitization because of the hydrothermal impacts from the ELIP. Here, we report new petrographic and geochemical data on the Permian dolomites, which we grouped into two categories (matrix dolomites or Md1-Md3 and cement dolomites or Cd), that support thermal convection dolomitization. The petrographic and geochemical features (delta C-1(3), delta O-18, REE, Mn/Sr ratios, Sr-87/Sr-86 ratios) suggest that Md1 were formed in penecontemporaneous seawater, whereas Md2, Md3, and Cd were formed in fluids resembling Permian seawater during shallow burial stage, of which both dolomitizing fluids are non-hydrothermal. High formation temperature inferred from fluid inclusion is consistent with the low delta O-18 values of the Md2, Md3 and Cd, suggesting that the ELIP event may have provided the heat for the dolomitization in the Qixia carbonate platform. The formation of the widespread dolomite bodies was facilitated by the rapid convection exchange between warm pore seawater in the Qixia strata of the platform margin and cold water from outside the slope. Therefore, we demonstrate that the dolomites in the northwestern Sichuan Basin are mainly due to thermal convection dolomitization in the shallow burial stage. This study provides important implications for the mechanism of dolomite formation linked to abnormal geothermal activity. LA - English DB - MTMT ER - TY - THES AU - Geoffrey, Motte TI - CARACTÉRISATION DE LA DOLOMITISATION D’UNE PLATE-FORME CARBONATÉE EN CONTEXTE DE MARGE SALIFÈRE HYPER-ÉTENDUE ET INVERSÉE : EXEMPLE DE LA PLATE-FORME CARBONATÉE JURASSIQUE OUEST-PYRÉNÉENNE PY - 2020 UR - https://m2.mtmt.hu/api/publication/33806665 ID - 33806665 LA - French DB - MTMT ER - TY - JOUR AU - Haas, János AU - Hips, Kinga TI - A rejtelmes dolomit JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 150 PY - 2020 IS - 2 SP - 233 EP - 266 PG - 34 SN - 0015-542X DO - 10.23928/foldt.kozl.2020.150.2.233 UR - https://m2.mtmt.hu/api/publication/31372620 ID - 31372620 N1 - Cited By :1 Export Date: 4 January 2023 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Yao, Shuqing AU - Gomez-Rivas, Enrique AU - Martin-Martin, Juan Diego AU - Gomez-Gras, David AU - Trave, Anna AU - Griera, Albert AU - Howell, John A. TI - Fault-controlled dolostone geometries in a transgressive-regressive sequence stratigraphic framework JF - SEDIMENTOLOGY J2 - SEDIMENTOLOGY VL - 67 PY - 2020 IS - 6 SP - 3290 EP - 3316 PG - 27 SN - 0037-0746 DO - 10.1111/sed.12739 UR - https://m2.mtmt.hu/api/publication/31471257 ID - 31471257 N1 - Funding Agency and Grant Number: University of Aberdeen; China Scholarship Council (CSC); AAPG (American Association of Petroleum Geologists) Foundation; British Sedimentological Research Group (BSRG); Grup Consolidat de Recerca "Geologia Sedimentaria" [2017SGR-824]; DGICYT Spanish Projects [CGL2015-69805-P, CGL2015-66335-C2-1-R, PGC2018-093903-B-C22]; AGAUR (Agencia de Gestio d'Ajuts Universitaris i de Recerca) of the Generalitat de Catalunya ("Beatriu de Pinos" fellowship) [2016 BP 00208-UB]; Spanish Ministry of Science, Innovation and Universities ("Ramon y Cajal" fellowship) [RYC2018-026335-I] Funding text: This research was funded by the University of Aberdeen, the China Scholarship Council (CSC), the AAPG (American Association of Petroleum Geologists) Foundation, and the British Sedimentological Research Group (BSRG). Additional funding was provided by the Grup Consolidat de Recerca "Geologia Sedimentaria" (2017SGR-824) and DGICYT Spanish Projects CGL2015-69805-P, CGL2015-66335-C2-1-R and PGC2018-093903-B-C22. EGR acknowledges funding by the AGAUR (Agencia de Gestio d'Ajuts Universitaris i de Recerca) of the Generalitat de Catalunya ("Beatriu de Pinos" fellowship 2016 BP 00208-UB) and the Spanish Ministry of Science, Innovation and Universities ("Ramon y Cajal" fellowship RYC2018-026335-I). Thanks to Joan Guanyabens for his assistance during one of the field campaigns, and to Magda Chmielewska for her assistance building Lidar virtual outcrop models. We are grateful to Enric Pascual-Cebrian, Felix Schlagintweit and Telm Bover-Arnal for their suggestions on carbonate facies. We thank the reviewers Cathy Hollis and Fadi Nader, and editors Hairuo Qing, Christian Betzler and Peir Pufahl for their valuable suggestions to improve this article. AB - This study investigates the geometries of fault-controlled dolostone geobodies and their structural and sequence stratigraphic controls, which provide new insights for the prediction and production of fault-controlled dolomitized hydrocarbon reservoirs. A very thick succession (>1600 m) of Aptian-Albian shallow-marine carbonates of the Benassal Formation that crop out in the Benicassim area (Maestrat Basin, eastern Spain) is partly replaced by dolomite, resulting in dolostone geometries ranging from massive patches to stratabound bodies. Detailed mapping, systematic logging and correlation were carried out to characterize the structural, sedimentary and sequence stratigraphic framework of the area and to constrain the principal controls on the full-range of dolostone geometries. The results show that carbonate sediments accumulated in a half graben stacked in three transgressive-regressive sequences. Large-scale massive dolostone patches (with up to kilometre extension) formed near large-scale faults indicating that they acted as entry points for warm dolomitizing fluids into the basin. These dolostone patches laterally pass to large stratabound bodies that extend for long distances (at least 7 km) away from feeding faults, forming a continuum. The presence of a regional unconformity and a clastic fine-grain low-permeability unit (Escucha Formation) on top of the Benassal Formation likely constrained the dolomitization fluids to an up to 580 m thick interval below the base of the Escucha Formation. Thus, only limestones within this interval, corresponding to the two uppermost transgressive-regressive sequences, were dolomitized. There is a clear relationship between the stratigraphic framework and the preferred replaced beds. Dolomitization preferentially affected sediments deposited in inner to middle ramp settings with predominant wackestone to packstone textures. Such facies are laterally most abundant in the east of the study area (i.e. basinward) and vertically in layers around the maximum flooding zone of the top sequence, which is preferentially affected by dolomitization. LA - English DB - MTMT ER - TY - THES AU - Karádi, Viktor TI - Upper triassic conodonts from the Csővár area and the Buda Hills, Hungary and their geologial applications PB - Eötvös Loránd Tudományegyetem (ELTE) PY - 2019 SP - 120 DO - 10.15476/ELTE.2018.098 UR - https://m2.mtmt.hu/api/publication/30545269 ID - 30545269 LA - English DB - MTMT ER - TY - JOUR AU - Yan, W AU - Jin, Z AU - Yao, M AU - Zhao, W TI - RELATIONSHIP BETWEEN ORIGIN AND DISTRIBUTION OF DOLOMITES IN LOWER PALEOZOIC, JIZHONG DEPRESSION, NORTH CHINA JF - FRESENIUS ENVIRONMENTAL BULLETIN J2 - FRESEN ENVIRON BULL VL - 28 PY - 2019 IS - 5 SP - 3946 EP - 3962 PG - 17 SN - 1018-4619 UR - https://m2.mtmt.hu/api/publication/31081129 ID - 31081129 N1 - China University of Petroleum-Beijing, College of Geosciences, Changping, Beijing, China Exploration and Development Research Institute, PetroChina Huabei Oilfield Company, Renqiu, China Cited By :1 Export Date: 13 June 2023 CODEN: FENBE Correspondence Address: Yan, W.; China University of Petroleum-Beijing, China; email: 1738959751@qq.com Funding details: National Major Science and Technology Projects of China, 2016ZX05006-005 Funding details: Science and Technology Major Project of Guangxi, 2016Z0X 5006-005 Funding text 1: Grateful acknowledgement is made to my supervisor, Professor Zhenkui Jin, for his considerable help by means of suggestion. Financial and digital supported by North China Oil Field is gratefully acknowledged. The authors also would like to express our gratitude to all those who have helped us during the writing of this thesis. This work was supported by the National Science and Technology Major Project [grant numbers 2016Z0X 5006-005]. Funding text 2: Grateful acknowledgement is made to my supervisor, Professor Zhenkui Jin, for his considerable help by means of suggestion. Financial and digital supported by North China Oil Field is gratefully acknowledged. The authors also would like to express our gratitude to all those who have helped us during the writing of this thesis. This work was supported by the National Science and Technology Major Project [grant numbers 2016ZX05006-005] AB - The origin and distribution of the Lower Paleozoic dolomites in the Jizhong Depression, North China, are related and affect the distribution of the reservoir. The Lower Paleozoic dolomites can be divided into four types: Type-A is gypsiferous mud silt -sized crystalline dolomites; Type-B is non-gypsiferous mud-silt-sized crystalline dolomites; Type C is silt-fine-sized crystalline dolomites; Type-D is medium-coarse-sized crystalline dolomites. Type-A dolomites contains gypsum, with stratiform stromatolites, bird's eye structures and brecciated structures. The ordering of dolomites averages 0.56. delta C-13 averages -0.155 parts per thousand (PDB) and delta O-18 averages -5.669 parts per thousand (PDB). Type-B dolomites are gypsum-free and not associated with gypsum bed. delta C-13 averages -2.114 parts per thousand (PDB). The rest of the characteristic are similar to type A. Type-C dolomites are subhedral and euhedral. Metasomatic relict structure are common. The ordering of dolomites averages 0.75. delta C-13 averages -0.693 parts per thousand (PDB) and delta O-18 averages -6.079 parts per thousand (PDB). Cathodoluminescence is orange and represents zonal structure. Type-D dolomites are subhedral or anhedral. Mosaic structure, recrystallization and residual porphyritic features are common. The ordering of dolomites averages 0.86. delta C-13 averages -1.433 parts per thousand (PDB) and delta O-18 averages -0.149 parts per thousand (PDB). The homogenization temperature of inclusions ranges between 90-330 degrees C. Cathodoluminescence is dark brown. Type-A dolomites and Type-B dolomites are thin, with a small horizontal distribution, but the number of dolomite layer is more. Type-C dolomites have large thickness and large horizontal distribution. It is generally distributed under Type-A and Type-B dolomites. Type-D dolomites have a massive distribution with a large vertical thickness. The range of horizontal distribution is relatively small. These characteristics can be used to analyze the original rock of dolomite, dolomitization temperature, strati graphic burial history, the occurrence time of dolomitization, and the source of magnesium ions. It is indicated that Type-A and Type-B dolomites are formed in tidal flat environment. Type-A dolomites are formed as a result of evaporative pumping. The origin of T-B dolomites are similar to that of dolomite in Andros Island, Bahamas. Type-C dolomites are formed as a result of seepage reflex dolomitization, and have a sandwich structure. Type-D dolomites are formed as a result of burial hydrothermal dolomitization, closely related to the deep faults of the Himalayan Movement and Cenozoic magmatic rocks. These dolomitizations result in different patterns of dolomite distribution. Type-A, Type-B and Type-D dolomites underwent dissolution during the formation process, and could form good reservoirs for oil and gas. LA - English DB - MTMT ER - TY - JOUR AU - Garaguly, István AU - Raucsikné Varga, Andrea Beáta AU - Raucsik, Béla AU - Schubert, Félix AU - Czuppon, György AU - Frei, R TI - Pervasive early diagenetic dolomitization, subsequent hydrothermal alteration, and late stage hydrocarbon accumulation in a Middle Triassic carbonate sequence (Szeged Basin, SE Hungary) JF - MARINE AND PETROLEUM GEOLOGY J2 - MAR PETROL GEOL VL - 98 PY - 2018 SP - 270 EP - 290 PG - 21 SN - 0264-8172 DO - 10.1016/j.marpetgeo.2018.07.024 UR - https://m2.mtmt.hu/api/publication/3399845 ID - 3399845 N1 - Funding Agency and Grant Number: National Research, Development and Innovation Fund of Hungary [K 108375] Funding text: This research was supported by the National Research, Development and Innovation Fund of Hungary (project no. K 108375). The authors would like to thank MOL Plc for providing the core material that were essential for this research. We would like to thank Dr. Fadi H. Nader and the anonymous referee for their suggestions and comments that improve our manuscript, as well as Associated Editor Dr. Ihsan Al-Aasm for the editorial work. Department of Mineralogy, Geochemistry and Petrology, University of Szeged, Egyetem utca 2-6, Szeged, 6702, Hungary Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, H-1112, Hungary Department of Geosciences and Natural Resource Management, University of Copenhagen, ØsterVoldgade10, Copenhagen, 1350, Denmark Nordic Center for Earth Evolution (NordCEE), Copenhagen, Denmark Cited By :15 Export Date: 12 September 2021 Correspondence Address: Garaguly, I.; Department of Mineralogy, Egyetem utca 2-6, Hungary; email: garagulyistvan@gmail.com Funding text 1: This research was supported by the National Research, Development and Innovation Fund of Hungary (project no. K 108375 ). The authors would like to thank MOL Plc for providing the core material that were essential for this research. We would like to thank Dr. Fadi H. Nader and the anonymous referee for their suggestions and comments that improve our manuscript, as well as Associated Editor Dr. Ihsan Al-Aasm for the editorial work. LA - English DB - MTMT ER - TY - JOUR AU - Győri, Orsolya AU - Mindszenty, Andrea AU - Haas, János AU - Czuppon, György TI - Dolomittest a tatai Kálvária-domb alsó-jura mészkövében JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 148 PY - 2018 IS - 1 SP - 27 EP - 34 PG - 8 SN - 0015-542X DO - 10.23928/foldt.kozl.2018.148.1.27 UR - https://m2.mtmt.hu/api/publication/3352489 ID - 3352489 N1 - MTA-ELTE Geológiai, Geofizikai és Űrtudományi Kutatócsoport, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary ELTE TTK Általános és Alkalmazott Földtani Tanszék, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary MTA Csillagászati és Földtudományi Kutatóközpont, Földtani és Geokémiai Intézet, Budaörsi út 45., Budapest, 1112, Hungary Cited By :1 Export Date: 24 January 2023 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Héja, Gábor AU - Kövér, Szilvia AU - Csillag, Gábor AU - Németh, A AU - Fodor, László TI - Evidences for pre-orogenic passive-margin extension in a Cretaceous fold-and-thrust belt on the basis of combined seismic and field data (western Transdanubian Range, Hungary) JF - INTERNATIONAL JOURNAL OF EARTH SCIENCES J2 - INT J EARTH SCI VL - 107 PY - 2018 IS - 8 SP - 2955 EP - 2973 PG - 19 SN - 1437-3254 DO - 10.1007/s00531-018-1637-3 UR - https://m2.mtmt.hu/api/publication/3420027 ID - 3420027 N1 - Funding Agency and Grant Number: Hungarian Researched Found [OTKA 113013]\n Funding text: This work was supported by the Hungarian Researched Found OTKA 113013. Seismic data set is available by MOL Hungarian Oil and Gas Plc. Quarry managers permitted the access to the visited quarries (Dolomit Ltd., Molnarko Ltd., and Pajtika Ltd.). The authors are grateful to Janos Haas and Hugo Ortner for the helpful discussion. Constructive comments of Duan Plaienka and an anonymous reviewer are appreciated.\n AB - Combined sedimentological and structural analysis was carried out in the field and on 2D seismic reflection profiles to recognize pre-orogenic structures in a Cretaceous fold-and-thrust belt. Detailed field observations were made in the Keszthely Hills, Western Hungary, while 2D seismic interpretation was carried out in the neighbouring Zala Basin. As a result, a fault-controlled intraplatform basin system was identified by a detailed analysis of bounding faults, and related outcrop-scale structures. The Norian–Rhaetian (227–201.3 Ma) synsedimentary faulting was associated with talus breccia formation, small-scale faulting, and dyke formation, in addition to slumping and other soft-sediment deformations. Based on the distribution of talus breccia, WNW–ESE-trending map-scale normal faults were identified in the Keszthely Hills, which is in agreement with the directly observed outcrop-scale synsedimentary faults. On seismic sections, similar WNW- or NW-trending Late Triassic normal faults were identified based on thickness variations of the syn-rift sediments and the presence of wedge-shaped bodies of talus breccia. Normal faulting occurred already in the Norian, and extensional tectonics was active through the Early and Middle Jurassic. The Late Triassic grabens of the western Transdanubian Range could be correlated with those in western part of the Southern Alps, and the Bajuvaric nappe system of the Northern Calcareous Alps. These grabens were situated on the proximal Adriatic margin, and they represent the first sign of the Alpine Tethys rifting. The locus of extension was laterally migrated westward, towards the distal Adriatic margin during Early and Middle Jurassic. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. LA - English DB - MTMT ER - TY - JOUR AU - Karádi, Viktor TI - Middle Norian conodonts from the Buda Hills, Hungary: an exceptional record from the western Tethys JF - JOURNAL OF IBERIAN GEOLOGY J2 - J IBER GEOL VL - 44 PY - 2018 IS - 1 SP - 155 EP - 174 PG - 20 SN - 1698-6180 DO - 10.1007/s41513-017-0009-3 UR - https://m2.mtmt.hu/api/publication/3351776 ID - 3351776 N1 - Funding Agency and Grant Number: Hantken Miksa Foundation; OTKA project [K113013] Funding text: I thank my supervisors, Dr. Agnes Gorog and Dr. Janos Haas for their helpful guidance during the preparation of the present study. I thank very much Dr. Michele Mazza and Dr. Manuel Rigo for their careful reviews of the manuscript. I am grateful to Dr. Tea Kolar-Jurkovsek for the useful discussions on Norian conodonts and for giving me an insight to Slovenian conodont faunas of this age. I would like to thank Agostino Rizzi and Dr. Michele Mazza (Milan, Italy) and Dr. Krisztina Buczko and Dr. Attila Virag (Budapest, Hungary) for their help in taking the SEM photographs. Special thank to Katherine Baque Manzaba for providing the Spanish abstract. First samples from localities A, C and D were provided by Pal Pelikan. Sampling of the cave section was enabled by Magdolna Virag and the Ariadne Association of Karst and Cave Research. The research was funded by the Hantken Miksa Foundation and the OTKA K113013 project. AB - Purpose: Recent biostratigraphic investigations of pelagic dolomites in the Buda Hills area, Hungary provided unique Middle Norian conodont assemblages. Due to the poorly represented Tethyan record of similar faunas and the present state of our knowledge of Alaunian conodonts, finer age assignment could not have been carried out. The purpose of this study is to discuss the natural cause (sedimentary, tectonic and paleoecological) and artificial biases (lumping taxonomy and inadequate figuration) that led to a scarce representation of the Alaunian conodont record. Further aims are to present here several taxonomic, systematic, and biostratigraphic notes on the Middle Norian conodonts based on the rich material recovered. Methods: Rock samples were processed using standard dissolution technique of dilute acetic acid. Scanning micro-photographs were taken of the conodont specimens from three views. Results: Remarks are added to the problematic species Epigondolella abneptis and Mockina postera, and some aspects for improvement of the Middle Norian conodont biostratigraphy are suggested. Detailed systematic descriptions of 3 genera and 15 species are given. The observed faunas include 5 previously unknown forms, namely Epigondolella aff. vialovi, Mockina aff. matthewi, M. aff. postera, M. aff. spiculata and Mockina sp. A. The Tethyan occurrence of Epigondolella transitia, a transitional Lower/Middle Norian conodont species previously known only from North America, is documented. Conclusions: The assemblage lets an insight into the main characteristics of the Lacian/Alaunian faunal turnover and into the evolutionary trends that resulted in the origination of the last representatives of conodonts of the Sevatian and the Rhaetian. The new conodont record of the Buda Hills highlights the fact that Alaunian conodonts are less known among Upper Triassic faunas. This work suggests the route of the future studies for a more precise and global applicability of conodonts in the Middle Norian biostratigraphy. © 2017, Springer International Publishing Switzerland. LA - English DB - MTMT ER - TY - JOUR AU - Garaguly, István AU - Raucsik, Béla AU - Raucsikné Varga, Andrea Beáta AU - Schubert, Félix TI - Középső-triász dolomitok képződésének története és töréses deformációja a Szegedi-medence területén JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 147 PY - 2017 IS - 1 SP - 39 EP - 60 PG - 22 SN - 0015-542X DO - 10.23928/foldt.kozl.2017.147.1.39 UR - https://m2.mtmt.hu/api/publication/3202162 ID - 3202162 N1 - Cited By :6 Export Date: 13 June 2023 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Haas, János AU - Hips, Kinga AU - Budai, Tamás AU - Győri, Orsolya AU - Lukoczki, Georgina AU - Kele, Sándor AU - Demény, Attila AU - Poros, Zsófia TI - Processes and controlling factors of polygenetic dolomite formation in the Transdanubian Range, Hungary: a synopsis JF - INTERNATIONAL JOURNAL OF EARTH SCIENCES J2 - INT J EARTH SCI VL - 106 PY - 2017 IS - 3 SP - 991 EP - 1021 PG - 31 SN - 1437-3254 DO - 10.1007/s00531-016-1347-7 UR - https://m2.mtmt.hu/api/publication/3091740 ID - 3091740 N1 - MTA-ELTE Geological, Geophysical and Space Science Research Group, Pázmány P. sétány 1/c, Budapest, 1117, Hungary Geological and Geophysical Institute of Hungary, Stefánia út 14, Budapest, 1143, Hungary Noble Research Center, Boone Pickens School of Geology, Oklahoma State University, Stillwater, OK 74078, United States Research Centre for Astronomy and Earth Sciences, Institute for Geological and Geochemical Research, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, 1112, Hungary ConocoPhillips Company, 600 N Dairy Ashford, Houston, TX 77079, United States Cited By :13 Export Date: 26 August 2022 CODEN: IJESF Correspondence Address: Haas, J.; MTA-ELTE Geological, Pázmány P. sétány 1/c, Hungary; email: haas@caesar.elte.hu LA - English DB - MTMT ER -