OOIR: Observatory of International Research

Papers

(The H4-Index of International Journal of Coal Geology is 32. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-06-01 to 2025-06-01.)

Article	Citations
Deep-basin gas generation via organic–inorganic interactions: New insights from redox-controlled hydrothermal experiments at elevated temperature	134
Editorial Board	67
Organic matter accumulation, paleoenvironment and kerogen structure of the Middle Jurassic Dameigou Formation, Qaidam Basin: Evidence from organic petrography and geochemistry	63
Intelligent classification of coal structure using multinomial logistic regression, random forest and fully connected neural network with multisource geophysical logging data	57
Organic matter accumulation mechanisms in the Wufeng-Longmaxi shales in western Hubei Province, China and paleogeographic implications for the uplift of the Hunan-Hubei Submarine high	57
The implementation of subterranean barriers with mine pre-drainage to reduce coal mine methane emissions from open-cut and underground metallurgical-coal mines	56
Scanning electron microscopic evaluation of broad ion beam milling effects to sedimentary organic matter: Sputter-induced artifacts or naturally occurring porosity?	54
Effects of acid concentration on the recovery of rare earth elements from coal fly ash	53
Interlaboratory study: Testing reproducibility of solid biofuels component identification using reflected light microscopy	48
Component identification of solid biomass fuels using reflected light microscopy: Interlaboratory study 2	48
Organic petrography and geochemistry of the Lower-Carboniferous coals from the Ekibastuz Basin, Kazakhstan	46
Deposition of atmospheric polycyclic aromatic hydrocarbons in rural areas: Current data and historical record from an ombrotrophic peatland	44
Editorial of the special issue: The 2023 joint 74th ICCP and 39th TSOP meeting: Organic petrology in the energy transition era: Challenges ahead	44
Petrology and geochemistry of Devonian cutinitic liptobioliths from northwestern China	41
Editorial Board	41
Structure and morphology of chars and activated carbons obtained from thermal treatment of coal and biomass origin materials, including their wastes: Results from the ICCP Microscopy of Carbon Materia	40
Petrographic and geochemical signatures of the Upper Permian Gondwana coals: Newcastle Coal Measures, Northern Sydney Basin, Australia	39
Cooper Basin REM gas shales after CO2 storage or acid reactions: Metal mobilisation and methane accessible pore changes	38
Editorial Board	37
Comparative metabolomic reveals chemotaxonomic markers of resin fossils for identification of botanical origins	37
Wood-degrading fungal origin of perylene in peatlands of southern Poland: A molecular and statistical approach	37
Simultaneous enhanced oil recovery, CCUS and UHUS in shale oil reservoirs	37
Application of organic petrology and chemistry in forensic studies of solid waste sites	36
Characterizing hydrocarbon-bearing fluid inclusions using CLSM-based microspectrometry with application to the Upper Permian rock salt in the Gorleben and Morsleben sites, Germany	35
Ranking the oil contribution of individual layers in a lacustrine shale oil system based on non-hydrocarbon analysis by FT-ICR MS	35

Physicochemical characteristics and oxidative potential of size-segregated respirable coal mine dust: Implications for potentially hazardous agents and health risk assessment	34
The occurrence of elevated δ34S in dissolved sulfate in a multi-level coal mine water system, Glasgow, UK	34
The molecular model of Marcellus shale kerogen: Experimental characterization and structure reconstruction	34
Geochemical influences on methanogenic groundwater from a low rank coal seam gas reservoir: Walloon Subgroup, Surat Basin	32
A comprehensive review of deep coalbed methane and recent developments in China	32
Effect of ScCO2-H2O treatment duration on the microscopic structure of coal reservoirs: Implications for CO2 geological sequestration in coal	32
Distribution of Li, Ga, Nb, and REEs in coal as determined by LA-ICP-MS imaging: A case study from Jungar coalfield, Ordos Basin, China	32