Abstract
Measurements of parameters of coal in the fault zones of the Upper Silesia Coal Basin (USCB) revealed that ca. 12% of the examined samples showed aggrading changes of coal quality; ca. 30% of them showed degrading ones and 58% did not show any of these changes. The aggrading changes were observed only in the immediate vicinity of the slickenside at a maximum distance of 0.2 m. The noticeable changes were connected with the majority of the parameters tested. The mean values of the coefficient of variation for all of the tested parameters ranged from 1 to 100%; the average value was 16.6%, and changeability compared to the unchanged zone varied from 0 to 51.5%. These changes are connected with flexible faults whose run is close to N-S and W-E directions.
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References
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Acknowledgements
The study was financially supported by Commissioned Research Project KBN PB-W-04-068-00-09 from the Polish funds for science.
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Ćmiel, S.R., Dziurowicz, M. (2011). Frictional Metamorphism of Coal in the Upper Silesia Coal Basin, Southern Poland. In: Idziak, A., Dubiel, R. (eds) Geophysics in Mining and Environmental Protection. Geoplanet: Earth and Planetary Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19097-1_13
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DOI: https://doi.org/10.1007/978-3-642-19097-1_13
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