OOIR: Observatory of International Research

Papers

(The H4-Index of International Journal of Coal Geology is 31. 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 2021-04-01 to 2025-04-01.)

Article	Citations
Organic matter accumulation, paleoenvironment and kerogen structure of the Middle Jurassic Dameigou Formation, Qaidam Basin: Evidence from organic petrography and geochemistry	110
Reassessment of the Pennsylvanian bio- and chronostratigraphy of the Saar-Lorraine Basin using high-precision U Pb ages of volcanic ashes	65
Chemo-hydro-mechanical effects of CO2 injection into a permeable limestone	61
CO2-enriched CBM accumulation mechanism for low-rank coal in the southern Junggar Basin, China	53
Soft modelling of the Hardgrove grindability index of bituminous coals: An overview	52
Editorial Board	51
Contrasts in maceral textures in progressive metamorphism versus near-surface hydrothermal metamorphism	50
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	47
The implementation of subterranean barriers with mine pre-drainage to reduce coal mine methane emissions from open-cut and underground metallurgical-coal mines	47
Editorial Board	45
Deep-basin gas generation via organic–inorganic interactions: New insights from redox-controlled hydrothermal experiments at elevated temperature	44
Evaluation of elemental affinities in coal using agglomerative hierarchical clustering algorithm: A case study in a thick and mineable coal seam (kM2) from Soma Basin (W. Turkey)	42
Mechanisms of strain rate-dependent response of naturally fractured coal	42
Proceedings of the 37th Annual Meeting of the Society for Organic Petrology	40
Petrology and geochemistry of the Fire Clay coalbed, Martin County, Inez 7 ½′ quadrangle, Kentucky, USA	40
Editorial Board	39
Editorial Board	39
Editorial Board	37
Organic matter preservation conditions in the third member of the Shahejie Formation (Dongpu Depression, China)	37
Editorial Board	36
Editorial Board	36
Geochemistry of two high-lithium content coal seams, Shanxi Province, China	35
The influence of Early Cretaceous paleoclimate warming event on sedimentary environment evolution and organic matter sources in Yin'e Basin: Evidence from petrology and molecular geochemistry	35
Formation of natural fractures and their impact on shale oil accumulation in the Mahu Sag, Junggar Basin, NW China	34
Coal mine wastes: Effective mitigation of coal waste slurry and acid mine drainage through bioflocculation using mixotrophic bacteria as bioflocculants	33

The origin of GHG's emission from self-heating coal waste dump: Atmogeochemical interactions and environmental implications	33
Differential graphitization of organic matter in coal: Some new understandings from reflectance evolution of meta-anthracite macerals	32
High-cellulose content of in-situ Miocene fossil tree stumps and trunks from Lusatia lignite mining district, Federal Republic of Germany	31
Interactions between surface properties of pristine coals and the intrinsic microbial communities involved in methane formation	31
Hyperspectral imaging of coal core: A focus on the visible-near-shortwave infrared (VN-SWIR) region	31
Cyclical water vapor sorption-induced structural alterations of mine roof shale	31