OOIR: Observatory of International Research

Papers

(The TQCC of International Journal of Coal Geology is 12. 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 2020-04-01 to 2024-04-01.)

Article	Citations
Critical review of the uncertainty of Tmax in revealing the thermal maturity of organic matter in sedimentary rocks	123
X-ray tomography imaging of shale microstructures: A review in the context of multiscale correlative imaging	69
A review of experimental and numerical modeling of digital coalbed methane: Imaging, segmentation, fracture modeling and permeability prediction	49
A novel approach to identify accessible and inaccessible pores in gas shales using combined low-pressure sorption and SAXS/SANS analysis	49
Evidence for multiple sources for inorganic components in the Tucheng coal deposit, western Guizhou, China and the lack of critical-elements	46
Mineralogical and geochemical characteristics of altered volcanic ashes (tonsteins and K-bentonites) from the latest Permian coal-bearing strata of western Guizhou Province, southwestern China	40
Impact of thermal maturity on the diagenesis and porosity of lacustrine oil-prone shales: Insights from natural shale samples with thermal maturation in the oil generation window	40
Comprehensive evaluation of potential coal mine dust emissions in an open-pit coal mine in Northwest China	39
The influence of rigid matrix minerals on organic porosity and pore size in shale reservoirs: Upper Devonian Duvernay Formation, Alberta, Canada	38
First insights into mineralogy, geochemistry, and isotopic signatures of the Upper Triassic high‑sulfur coals from the Thai Nguyen Coal field, NE Vietnam	38
Geochemistry effects of supercritical CO2 and H2O on the mesopore and macropore structures of high-rank coal from the Qinshui Basin, China	38
Fracture variation in high-rank coal induced by hydraulic fracturing using X-ray computer tomography and digital volume correlation	38
Mechanical characterization of shale matrix minerals using phase-positioned nanoindentation and nano-dynamic mechanical analysis	38
Nanoscale pore structure of Carboniferous coals from the Ukrainian Donets Basin: A combined HRTEM and gas sorption study	37
Heterogeneous development of micropores in medium-high rank coal and its relationship with adsorption capacity	36
A review of spatially resolved techniques and applications of organic petrography in shale petroleum systems	35
Thermal evolution behavior of the organic matter and a ray of light on the origin of vitrinite-like maceral in the Mesoproterozoic and Lower Cambrian black shales: Insights from artificial maturation	34
Geological controls on the distribution of REY-Zr (Hf)-Nb (Ta) enrichment horizons in late Permian coals from the Qiandongbei Coalfield, Guizhou Province, SW China	34
Depositional environment, thermal maturity and shale oil potential of the Cretaceous Qingshankou Formation in the eastern Changling Sag, Songliao Basin, China: An integrated organic and inorganic geoc	34
Evaluation of gas-in-place content and gas-adsorbed ratio using carbon isotope fractionation model: A case study from Longmaxi shales in Sichuan Basin, China	34
Paleo-depositional environment, origin and characteristics of organic matter of the Triassic Chang 7 Member of the Yanchang Formation throughout the mid-western part of the Ordos Basin, China	32
Major element composition controls rare earth element solubility during leaching of coal fly ash and coal by-products	32
Evaluation and modeling of water vapor sorption and transport in nanoporous shale	31
The geology, mineralogy, petrography, and geochemistry of the Miocene Dursunbey coal within fluvio-lacustrine deposits, Balıkesir (Western Turkey)	29
Geological factors controlling variations in the mineralogical and elemental compositions of Late Permian coals from the Zhijin-Nayong Coalfield, western Guizhou, China	29

The molecular model of Marcellus shale kerogen: Experimental characterization and structure reconstruction	29
Identification of thin-layer coal texture using geophysical logging data: Investigation by Wavelet Transform and Linear Discrimination Analysis	29
Geochemistry of two high-lithium content coal seams, Shanxi Province, China	29
A novel NMR surface relaxivity measurements on rock cuttings for conventional and unconventional reservoirs	28
Numerical analysis and prediction of ground surface movement induced by coal mining and subsequent groundwater flooding	28
Morphology, chemical and mineralogical composition of magnetic fraction of coal fly ash	28
A multidisciplinary study and palaeoenvironmental interpretation of middle Miocene Keles lignite (Harmancık Basin, NW Turkey), with emphasis on syngenetic zeolite formation	28
Advancing the application of atomic force microscopy (AFM) to the characterization and quantification of geological material properties	27
Evidence for the repeated occurrence of wildfires in an upper Pliocene lignite deposit from Yunnan, SW China	27
Critical metal recovery potential of Appalachian acid mine drainage treatment solids	27
Effects of simulated surface freshwater environment on in situ microorganisms and their methanogenesis after tectonic uplift of a deep coal seam	26
Mineral matter in the Pennsylvanian coal from the Yangquan Mining District, northeastern Qinshui Basin, China: Enrichment of critical elements and a Se-Mo-Pb-Hg assemblage	25
Experimental observations of heterogeneous strains inside a dual porosity sample under the influence of gas-sorption: A case study of fractured coal	25
Strontium isotopes in high- and low-Ge coals from the Shengli Coalfield, Inner Mongolia, northern China: New indicators for Ge source	24
Depositional environment and thermal maturity of the coal-bearing Longtan Shale in southwest Guizhou, China: Implications for shale gas resource potential	24
Enrichment and distribution of elements in the middle Miocene coal seams in the Orhaneli coalfield (NW Turkey)	24
The influence of paleoclimate and a marine transgression event on organic matter accumulation in lacustrine black shales from the Late Cretaceous, southern Songliao Basin, Northeast China	24
Rare earth elements and yttrium in Pennsylvanian coals and shales in the eastern part of the Illinois Basin	24
Subsurface fractures, in-situ stress and permeability variations in the Walloon Coal Measures, eastern Surat Basin, Queensland, Australia	24
Particle size and mineralogy distributions in respirable dust samples from 25 US underground coal mines	24
Rare earth elements and other critical elements in the magnetic fraction of fly ash from several Polish power plants	24
Geochemical, petrographic and petrophysical characterization of the Lower Bakken Shale, Divide County, North Dakota	23
Geological controls on gas content distribution of coal seams in the Kınık coalfield, Soma Basin, Turkey	23
Numerical investigation of the effects of proppant embedment on fracture permeability and well production in Queensland coal seam gas reservoirs	23
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	22
Relating Tmax and hydrogen index to vitrinite and solid bitumen reflectance in hydrous pyrolysis residues: Comparisons to natural thermal indices	22
Microstructural evolution of metallurgical coke: Evidence from Raman spectroscopy	22
Structural compartmentalization and its relationships with gas accumulation and gas production in the Zhengzhuang Field, southern Qinshui Basin	22
Detachment of coal fines deposited in proppant packs induced by single-phase water flow: Theoretical and experimental analyses	22
Biodegradation of early thermogenic gas and generation of secondary microbial gas in the Tieliekedong region of the northern Tarim Basin, NW China	21
Goaf gas drainage and its impact on coal oxidation behaviour: A conceptual model	21
Effects of petroleum retention and migration within the Triassic Chang 7 Member of the Ordos Basin, China	21
Effect of pore structure on competitive sorption and diffusion of mixed methane and carbon dioxide in anthracite, South Qinshui Basin, China	20
Origin of organic matter and organic pores in the overmature Ordovician-Silurian Wufeng-Longmaxi Shale of the Sichuan Basin, China	20
Integrating advanced soft computing techniques with experimental studies for pore structure analysis of Qingshankou shale in Southern Songliao Basin, NE China	20
Mineralogy and geochemistry of Lower Silurian black shales from the Yangtze platform, South China	20
Compositional evolution of organic matter in Boquillas Shale across a thermal gradient at the single particle level	19
Predicted CO2 water rock reactions in naturally altered CO2 storage reservoir sandstones, with interbedded cemented and coaly mudstone seals	19
Pore anisotropy in unconventional hydrocarbon source rocks: A small-angle neutron scattering (SANS) study on the Arthur Creek Formation, Georgina Basin, Australia	19
Assessing pellet fuels quality: A novel application for reflected light microscopy	19
Understanding coal quality and the critical importance of comprehensive coal analyses	19
Effects of composition and temperature on water sorption in overmature Wufeng-Longmaxi shales	19
Geochronology, mineralogy, and geochemistry of tonsteins from the Pennsylvanian Taiyuan Formation of the Jungar Coalfield, Ordos Basin, North China	19
Effects of acid concentration on the recovery of rare earth elements from coal fly ash	19
Aspects of rare earth element geochemistry of the Pond Creek coalbed, Pike County, Kentucky	18
Geomechanical properties of coal macerals; measurements applicable to modelling swelling of coal seams during CO2 sequestration	18
A novel VRo, T , and S indices conversion formulae on data from the fold-and-thrust belt of the Western Outer Carpathians (Poland)	18
Pore accessibility and trapping of methane in Marcellus Shale	18
Middle Jurassic lacustrine source rocks controlled by an aridification event: A case study in the northern Qaidam Basin (NW China)	18
Organic petrology and geochemistry of Lower Cretaceous lacustrine sediments in the Chaoyang Basin (Liaoning Province, northeast China): Influence of volcanic ash on algal productivity and oil shale fo	18

Differential graphitization of organic matter in coal: Some new understandings from reflectance evolution of meta-anthracite macerals	18
Spectral manifestations of coal metamorphism: Insights from coal microstructural framework	17
Critical insights from Rock-Eval analysis of vitrains	17
Differences in CH4 and C2H6 carbon isotopic compositions from open and closed pores in coal: Implications for understanding the two-stage δ13C shift during canister desorption	17
Coal elemental (compositional) data analysis with hierarchical clustering algorithms	16
Abrupt change of pore system in lacustrine shales at oil- and gas-maturity during catagenesis	16
Sequence stratigraphic analysis of thick coal seams in paralic environments – A case study from the Early Permian Shanxi Formation in the Anhe coalfield, Henan Province, North China	16
Origin of the tuff parting and associated enrichments of Zr, REY, redox-sensitive and other elements in the Early Miocene coal of the Siniy Utyes Basin, southwestern Primorye, Russia	16
Can cuttings replace cores for porosity and pore size distribution analyses of coal?	16
The structural versus textural control on the methane sorption capacity of clay minerals	16
Modeling hydrocarbon accumulation based on gas origin and source rock distribution in Paleozoic strata of the Ordos Basin, China	16
Phyteral perspectives: Every maceral tells a story	15
Study on petrographic characteristics of devolatilization char/coke related to coal rank and coal maceral	15
Laminae characteristics of lacustrine shales from the Paleogene Kongdian Formation in the Cangdong Sag, Bohai Bay Basin, China: Why do laminated shales have better reservoir physical properties?	15
Influence of organic matter type on porosity development in the Wufeng-Longmaxi Shale: A combined microscopy, neutron scattering and physisorption approach	15
Machine learning and data augmentation approach for identification of rare earth element potential in Indiana Coals, USA	15
Elemental composition, environment of deposition of the lower Carboniferous Emma Fiord formation oil shale in Arctic Canada	15
Palaeoenvironmental reconstruction and evidence of marine influence in Permian coal-bearing sequence from Lalmatia Coal mine (Rajmahal Basin), Jharkhand, India: A multi-proxy approach	15
Mineralogy, petrography, and Rock-Eval pyrolysis of late Oligocene coal seams in the Malkara coal field from the Thrace Basin (NW Turkey)	15
Automated coal petrography using random forest	15
Insights into solid-gas conversion and cavity growth during Underground Coal Gasification (UCG) through Thermo-Hydraulic-Chemical (THC) modelling	15
The role of residual bitumen on the pore structure of organic-rich shales from low to over mature: Insight from shale and coal samples after the hydrous pyrolysis	15
Kerogen composition and maturity assessment of a solid bitumen-rich and vitrinite-lean shale: Insights from the Upper Jurassic Vaca Muerta shale, Argentina	15
Geochemical and sedimentary facies study – Implication for driving mechanisms of organic matter enrichment in the lower Silurian fine-grained mudstones in the Baltic Basin (W Lithuania)	15
Controls of marine shale gas accumulation in the eastern periphery of the Sichuan Basin, South China	15
Mineralogy and enrichment of critical elements (Li and Nb-Ta-Zr-Hf-Ga) in the Pennsylvanian coals from the Antaibao Surface Mine, Shanxi Province, China: derivation of pyroclastics and sediment-source	15
A two-stage step-wise framework for fast optimization of well placement in coalbed methane reservoirs	15
An insight into quartz mineral interactions with kerogen in Green River oil shale	15
Investigation of the carbon structure of naturally graphitized coals from Central Hunan, China, by density-gradient centrifugation, X-ray diffraction, and high-resolution transmission electron microsc	15
Geochemistry and rare-metal potential of coals of the Sakhalin coal basin, Sakhalin island, Russia	15
Relationship between coal composition, fracture abundance and initial reservoir permeability: A case study in the Walloon Coal Measures, Surat Basin, Australia	15
Climatic and environmental conditions during the Pleistocene in the Central Qaidam Basin, NE Tibetan Plateau: Evidence from GDGTs, stable isotopes and major and trace elements of the Qigequan Formatio	15
Hydrothermally-altered coal from the Daqingshan Coalfield, Inner Mongolia, northern China: Evidence from stable isotopes of C within organic matter and C-O-Sr in associated carbonates	15
Flow structures and mineralisation in thermally altered coal from the Moatize Basin, Mozambique	14
Mineralogical and geochemical characteristics of tonsteins from the Middle Jurassic Yan'an Formation, Ordos Basin, North China	14
Geological process of Late Paleozoic shale gas generation in the eastern Ordos Basin, China: Revelations from geochemistry and basin modeling	14
Depositional paleoenvironment and source rock characterization across the Toarcian Oceanic Anoxic Event from the eastern Tethys, Tibet, SW China	14
Petrographic and geochemical characteristics of selected coal seams from the Late Cretaceous-Paleocene Guaduas Formation, Eastern Cordillera Basin, Colombia	14
Critical element (Nb-Ta-Zr-Hf-REE-Ga-Th-U) mineralization in Late Triassic coals from the Gaosheng Mine, Sichuan Basin, southwestern China: Coupled effects of products of sediment-source-region erosio	14
Provenance of multi-stage volcanic ash recorded in the Late Carboniferous coal in the Jungar Coalfield, North China, and their contribution to the enrichment of critical metals in the coal	14
Lateral changes of organic matter preservation in the lacustrine Qingshankou Formation (Cretaceous Songliao Basin, NE China): Evidence for basin segmentation	14
Carbon stability and morphotype composition of biochars from feedstocks in the Mekong Delta, Vietnam	14
Comparison of the impact of moisture on methane adsorption and nanoporosity for over mature shales and their kerogens	14
Deformation-related coalification: Significance for deformation within shallow crust	13
Insights on the characteristics and sources of gas from an underground coal mine using compositional data analysis	13
A physics-based probabilistic forecasting methodology for hazardous microseismicity associated with longwall coal mining	13
On the common occurrence of sulphate with elevated δ34S in European mine waters: Sulphides, evaporites or seawater?	13
Methane sorption capacities and geochemical characterization of Paleozoic shale Formations from Western Peninsula Malaysia: Implication of shale gas potential	13
Changes in chemistry of vitrinite in coal through time: Insights from organic functional group characteristics	13
Potential effect of carbon dioxide injection on the functional groups of medium volatile bituminous coals analysed using in-situ diffuse reflectance Fourier-transform infrared spectroscopy	13
Petrographic and chemical structure characteristics of amorphous organic matter in marine black shales: Insights from Pennsylvanian and Devonian black shales in the Illinois Basin	13
Mineralogical and geochemical characteristics of coal from the Southeastern Qinshui Basin: Implications for the enrichment and economic value of Li and REY	13
Mineral and rare earth element distribution in the Tunçbilek coal seam, Kütahya, Turkey	13
Quantitative characterization of fracture structure in coal based on image processing and multifractal theory	13
Adherent microbes in coal seam environments prefer mineral-rich and crack-associated microhabitats	13
Influence of magmatic fluids on the organic and inorganic fractions of coals from the Peñarroya-Belmez-Espiel Basin (Spain)	13
Isotherms and kinetics of deformation of coal during carbon dioxide sequestration and their relationship to sorption	13
Molybdenum-uranium-vanadium geochemistry in the lower Paleozoic Alum Shale of Scandinavia: Implications for vanadium exploration	13
Trace element partitioning during coal preparation: Insights from U.S. Illinois Basin coals	13
Oil migration, retention, and differential accumulation in “sandwiched” lacustrine shale oil systems from the Chang 7 member of the Upper Triassic Yanchang Formation, Ordos Basin, China	13
A comprehensive review of deep coalbed methane and recent developments in China	13
Impact of thermal maturity on the concomitant evolution of the ultrafine structure and porosity of marine mudstones organic matter; contributions of electronic imaging and new spectroscopic investigat	13
Organic petrography and geochemistry of the prolific source rocks from the Jurassic Najmah and Cretaceous Makhul Formations in Kuwait – Validation and expansion of Raman spectroscopic thermal maturity	12
Distinction of strontium isotope ratios between water-soluble and bulk coal fly ash from the United States	12
Co-occurrence of charcoal, polycyclic aromatic hydrocarbons and terrestrial biomarkers in an early Permian swamp to lagoonal depositional system, Paraná Basin, Rio Grande do Sul, Brazil	12
Influence of porosity on the reactivity of inertinite and vitrinite toward sodium hypochlorite: Implications for enhancing coal seam gas development	12
Kerogen assemblages and δ13CKerogen of the uppermost Pliensbachian–lower Toarcian succession of the Asturian Basin (northern Spain)	12
Distribution and preconcentration of critical elements from coal fly ash by integrated physical separations	12
Petrographical and petrophysical characterization of the late cretaceous Naparima Hill Formation, Central Range, Trinidad, West Indies	12
Application of paleoporosity and bitumen saturation concepts to tight-gas accumulations containing solid bitumen	12
Mechanism for the formation of natural fractures and their effects on shale oil accumulation in Junggar Basin, NW China	12
Application of various machine learning techniques in predicting coal wettability for CO2 sequestration purpose	12
Post-flowback production data suggest oil drainage from a limited stimulated reservoir volume: An Eagle Ford shale-oil case	12