@article{MTMT:34758712,
	title = {Geochemical and petrographic evaluation of hydrous pyrolysis experiments on core plugs of Lower Toarcian Posidonia Shale: Comparison of artificial and natural thermal maturity series},
	url = {https://m2.mtmt.hu/api/publication/34758712},
	author = {Arysanto, A. and Burnaz, L. and Zheng, T. and Littke, R.},
	doi = {10.1016/j.coal.2024.104459},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {284},
	unique-id = {34758712},
	issn = {0166-5162},
	year = {2024},
	eissn = {1872-7840},
	pages = {104459}
}

@article{MTMT:34754866,
	title = {High-cellulose content of in-situ Miocene fossil tree stumps and trunks from Lusatia lignite mining district, Federal Republic of Germany},
	url = {https://m2.mtmt.hu/api/publication/34754866},
	author = {Kus, J. and Dolezych, M. and Schneider, W. and Hower, J.C. and Hofmann, Tamás and Visiné Rajczi, Eszter and Bidló, András and Bolodár-Varga, Bernadett and Sachsenhofer, R.F. and Bechtel, A. and Stojanović, K. and Životić, D. and Kojić, I. and Mastalerz, M. and Graupner, T. and Lukens, W.E. and Donaldson, L.},
	doi = {10.1016/j.coal.2024.104494},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {286},
	unique-id = {34754866},
	issn = {0166-5162},
	abstract = {Second Miocene Seam Complex (2nd MFK; germ.: 2. Miozäner Flözkomplex) holds many in-situ, not permineralised fossil tree stumps and trunks with high-cellulose contents. The state of preservation of a set of in-situ fossil trees (Taxodioxylon cryptomerioides, Sciadopityoxylon wettsteinii, and Quasisequoioxylon piskowitzense) collected from three open-cast mines (Welzow-Süd, Meuro, and Piskowitz) in Lusatia lignite mining district, Federal Republic of Germany was investigated using a multi-method research schema.
		Examination of preservation state of thermally immature fossil woods revealed: (1) well-preserved (non-deformed, non-degraded, and non-flattened) textinite, (2) a retained structural integrity represented by multilayered (multi-zoned) cells with primary, secondary cell wall, and middle lamella, (3) microfracturing restricted to secondary walls only, (4) preservation of polyphenolic parenchyma cells (PP cells), (5) excellent preservation of pits in ray tracheids, (6) presence of amorphous silica (opal-A) coating, and (7) crystalline silica (opal-CT) fillings of small-bladed crystals.
		Thermogravimetric analysis results showed dissimilar gelification status of fossil samples, supporting chlorite holocellulose assay results. The latter indicated anomalously high-cellulose values (15.6–37.6% holocellulose). The micro-FTIR data obtained revealed an excellent preservation of both hemicellulose (bands at 1740 and 1245 cm−1) and cellulose (bands at 1110 and 1040 cm−1). Micro-FTIR spectrometry indicated lack of preferential hydrolytic removal of polysaccharides in examined samples.
		Biomarker patterns in lignite revealed forested and prevailing reed-mire vegetation. The results indicated lower contribution of Cupressaceae and emergent macrophyta to precursor organic matter of Welzow-Süd in comparison to Piskowitz lignite. Piskowitz lignite formed in permanent mire with stable water table under reducing, mesotrophic conditions. In contrast, more pronounced water level fluctuations (reducing to slightly oxic settings) and/or post-depositional events are postulated for Welzow-Süd samples.
		Biomarker assemblages obtained from fossil wood show a distinct dominance of diterpenoids and δ13C values (−24.6 ‰ to −20.3 ‰) that clearly confirm gymnosperm sources. Distributions of diteprenoids and sesquiterpenoids, as well as fatty acids indicate the higher amount of saturated diterpenoids (pimarane, abietane) in fossil than in modern wood. This indicates reducing conditions promoting hydrogenation reactions. In addition to low Eh, preservation of cellulose in fossil wood was also favored by acidic conditions, very low degrees of aerobic fungal degradation, and protection of wood by Cupressaceae-derived resins.
		While δ13C values of fossil wood are generally consistent with stratigraphic trends and chemotaxonomical classification, slightly elevated δ13C values recorded in T. cryptomerioides and S. wettsteinii in Welzow-Süd and Meuro open-cast mines, respectively, compared to published δ13C data of fossil gymnosperm wood are also indicative for good cellulose preservation.
		Both preservation of in-situ Miocene fossil stumps and trunks and retention of high-cellulose contents are suggested to be related to high-amplitude temporal fluctuations associated with repeated eustatically-controlled wet-dry cycling inducing: (1) weathering of tuff- and rhyolite-dominated acidic volcanics and Lausitz granodiorite, (2) associated erosion of saprolites, and (3) peat-sourced circulation of humic acid- and fulvic acid-rich waters. The latter led to the formation of Middle Miocene kaolinite deposits, as well as to the release of silicic acid and its subsequent precipitation in form of opal-A. The latter influenced preservation of high-cellulose contents in fossil wood.},
	keywords = {carbon isotope; CLSM; Micro-FTIR; holocellulose; lignite; biomarkers; Xylite; Fossil and modern wood; Second Lusatian lignite seam; Calcofluor-stained CLSM},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34754565,
	title = {Quality and composition of Lower Cretaceous carbonate source rocks and seepage oils in the Belize Basin, southern Belize, Central America},
	url = {https://m2.mtmt.hu/api/publication/34754565},
	author = {Holland, B. and Alsen, P. and Nytoft, H.P. and Rudra, A. and Sanei, H. and Petersen, H.I.},
	doi = {10.1016/j.coal.2024.104478},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {285},
	unique-id = {34754565},
	issn = {0166-5162},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34625902,
	title = {Organic petrology and geochemistry of the Devonian-Mississippian bakken formation, Williston Basin, North Dakota},
	url = {https://m2.mtmt.hu/api/publication/34625902},
	author = {Abdi, Zain and Rimmer, Susan M.},
	doi = {10.1016/j.coal.2023.104420},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {282},
	unique-id = {34625902},
	issn = {0166-5162},
	keywords = {Geochemistry; Solid bitumen; Organic petrology; Vitrinite reflectance equivalence},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34625901,
	title = {Weathering alterations of coal mining wastes geochemistry, petrography, and mineralogy, a case study from the Janina and Marcel Coal Mines, Upper Silesian Coal Basin (Poland)},
	url = {https://m2.mtmt.hu/api/publication/34625901},
	author = {Fabianska, M. J. and Ciesielczuk, J. and Szczerba, M. and Misz-Kennan, M. and Wieclaw, D. and Szram, E. and Nadudvari, A. and Ciesielska, Z.},
	doi = {10.1016/j.coal.2023.104407},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {281},
	unique-id = {34625901},
	issn = {0166-5162},
	keywords = {Biomarkers; Aromatic hydrocarbons; weathering; mineral phases; maceral composition; Coal mining waste; Upper Silesian Coal Basin (Poland)},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34625900,
	title = {Assessing biochar's permanence: An inertinite benchmark},
	url = {https://m2.mtmt.hu/api/publication/34625900},
	author = {Sanei, Hamed and Rudra, Arka and Przyswitt, Zia Moller Moltesen and Kousted, Sofie and Sindlev, Marco Benkhettab and Zheng, Xiaowei and Nielsen, Soren Bom and Petersen, Henrik Ingermann},
	doi = {10.1016/j.coal.2023.104409},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {281},
	unique-id = {34625900},
	issn = {0166-5162},
	keywords = {PERMANENCE; BIOCHAR; Carbonization temperature; Inertinite benchmark; Production temperature},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34625896,
	title = {Organic geochemistry and organic petrology of Oligocene and Miocene lignites, subbituminous and high volatile bituminous coals and carbonaceous shales in northern and central Trinidad},
	url = {https://m2.mtmt.hu/api/publication/34625896},
	author = {Baboolal, Anastasia A. and Littke, Ralf and Zieger, Laura},
	doi = {10.1016/j.coal.2023.104437},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {282},
	unique-id = {34625896},
	issn = {0166-5162},
	keywords = {depositional environment; organic geochemistry; Trinidad; Organic petrography; Oligocene and Miocene coals},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34625894,
	title = {Enrichment of rare earth elements in epigenetic dolomite occurring in contact metamorphosed Witbank coals (South Africa)},
	url = {https://m2.mtmt.hu/api/publication/34625894},
	author = {Moroeng, Ofentse M. and Murathi, Bridgette and Wagner, Nicola J.},
	doi = {10.1016/j.coal.2023.104405},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {282},
	unique-id = {34625894},
	issn = {0166-5162},
	keywords = {Carbonates; Hydrothermal activity; mode of occurrence; Main Karoo Basin; Sequential leaching; Dolerite intrusion; Medium REEs; Gd anomaly},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34575594,
	title = {Shale oil potential and mobility in low- to medium-maturity lacustrine shales: A case study of the Yanchang Formation shale in southeast Ordos Basin, China},
	url = {https://m2.mtmt.hu/api/publication/34575594},
	author = {Cao, Huairen and Shi, Jun and Zhan, Zhao-Wen and Wu, Hao and Wang, Xiaoyu and Cheng, Xin and Li, Haolin and Zou, Yan-Rong and Peng, Ping'an},
	doi = {10.1016/j.coal.2023.104421},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {282},
	unique-id = {34575594},
	issn = {0166-5162},
	abstract = {Oil mobility is essential for the evaluation of shale oil resources, yet there has been limited research conducted on the oil mobility of low-to medium-maturity lacustrine shale. This study integrates multiple methodologies such as organic geochemistry, mineralogy, oil-kerogen adsorption-swelling experiments, and in-situ conversion pro-cess (ICP) models to evaluate the mobility and potential for shale oil in the lacustrine shale of the Yanchang Formation in the Yaoqu 1 (YQ1) well situated in the southeastern region of the Ordos Basin. The Chang 7 shales are categorized as highly favorable source rocks, nonetheless, the oil contained within these layers predomi-nantly exists in an adsorbed-swelling state, resulting in limited mobility as indicated by the oil saturation index, a modified oversaturation index, and production index. Therefore, the utilization of existing conventional tech-niques for shale oil exploitation is not viable for the Chang 7 shale characterized by low to medium maturity in the study area. Nevertheless, during the ICP, the quantity and mobility of oil within the Chang 7 shales exhibit a substantial increase as temperature rises. Moreover, once the Chang 7 type II shales reach a maturity level of around 0.91%Ro, they demonstrate noteworthy prospects for shale oil production. The findings of this study serve as a valuable reference for guiding the advancement of in-situ conversion process technology in the study area, while also offering substantial evidence for addressing the intricate challenge of crude oil mobility in low-to medium-maturity lacustrine shale reservoirs.},
	keywords = {Swelling; Ordos basin; Shale oil; lacustrine shale; Low-to medium-maturity; Oil mobility},
	year = {2024},
	eissn = {1872-7840}
}

@article{MTMT:34547354,
	title = {Organic minerals in a self-heating coal-waste dump in Upper Silesia, Poland: Structure, formation pathways and environmental issues},
	url = {https://m2.mtmt.hu/api/publication/34547354},
	author = {Nádudvari, Á. and Krzykawski, T. and Jabłońska, M. and Fabiańska, M. and Skrzyńska, K. and Abramowicz, A. and Książek, M. and Ciesielczuk, J.},
	doi = {10.1016/j.coal.2023.104403},
	journal-iso = {INT J COAL GEOL},
	journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY},
	volume = {281},
	unique-id = {34547354},
	issn = {0166-5162},
	year = {2024},
	eissn = {1872-7840}
}