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Geologos

The Journal of Adam Mickiewicz University

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What are cleats? Preliminary studies from the Konin lignite mine, Miocene of central Poland

Marek Widera
Published Online: 2014-05-17 | DOI: https://doi.org/10.2478/logos-2014-0001

Abstract

Cleats (fractures, joints) are discontinuities in coals, including lignites. They are important in mining activity because of their gas and water permeability in hard coal, and mainly because of their water permeability in lignites. As opposed to hard-coal cleats, lignite cleats have not been studied in detail before. The present contribution does so, using as an example the 1st Middle-Polish Lignite Seam (MPLS-1) in the Jóźwin IIB opencast mine in central Poland. It should be mentioned here that any remarks in the present contribution concerning MPLS-1 refer exclusively to this lignite seam in the Jóźwin IIB opencast mine.

The investigated discontinuities consist of two sets, i.e. the face and butt cleats, which are roughly oriented NW-SE and NE-SW, respectively. The mean spacing of the face cleats is ~12.4 cm, while the mean spacing of the butt cleats is ~12.8 cm. The maximum average aperture is ~4.9 mm for the face cleats and ~4.1 mm for the butt cleats. The cleat spacing and aperture do not depend on the lignite thickness, but the cleat spacing increases with increasing mineral-matter and xylite content, whereas the aperture increases when the contents decrease. The regional folding and local salt diapirism tentatively explain the formation of the orthogonal system of the lignite cleats, partly because of the parallelism of the face cleats and the major tectonic directions in central Poland.

Keywords : lignite cleats; structural geology; lignite seams; Miocene; central Poland

References

  • Ammosov, I.I. & Eremin, I.V., 1963. Fracturing in coal. IZDAT Publishers (Moscow) / Office of Technical Services, U.S. Department of Commerce (Washington, DC), 109 pp.Google Scholar

  • Bielowicz, B., 2013. Petrographic composition of Polish lignite and its possible use in a fluidized bed gasifi cation process. International Journal of Coal Geology 116-117, 236-246.Web of ScienceGoogle Scholar

  • Billings, M.P., 1972. Structural geology (3rd ed.)., Prentice Hall (New Delhi), 606 pp.Google Scholar

  • Close, J.C., 1993. Natural fractures in coal. [In:] Law, B.E. & Rice, D.D. (Eds), Hydrocarbons from coal. American Association of Petroleum Geologists Studies in Geology 38, 119-132.Google Scholar

  • Close, J.C. & Mavor, M.J., 1991. Influence of coal composition and rank on fracture development in Fruitland coal gas reservoirs of San Juan Basin. [In:] Schwochow, S.D. (Ed.), Coalbed methane of western North America. Rocky Mountain Association of Geologists, 109-121.Google Scholar

  • Dadlez, R. & Jaroszewski, W., 1994. Tektonika [Tectonics].Polish Geological Press (Warszawa), 743 pp. (in Polish)Google Scholar

  • Dadlez, R., Marek, S. & Pokorski, J., 2000. Geological map of Poland without Cenozoic deposits, scale 1:1000000. Polish Geological Institute (Warszawa).Google Scholar

  • Dawson, G.K.W. & Esterle, J.S., 2010. Controls on coal cleat spacing. International Journal of Coal Geology 82, 213-218.CrossrefWeb of ScienceGoogle Scholar

  • Grimm, K. (Ed.), 2002. Tertiary. [In:] German Stratigraphic Commission (Ed.): Stratigraphic table of Germany 2002. GFZ GeoForschungsZentrum (Potsdam), 14 pp.Google Scholar

  • Hancock, P., 1985. Brittle microtectonics: principles and practice. Structural Geology 7, 437-458.Google Scholar

  • Jarosiński, M., Porawa, P. & Ziegler, P.A., 2009. Cenozoic dynamic evolution of the Polish Platform. Geological Quarterly 53, 3-26.Google Scholar

  • Jaroszewski, W., 1981. Tektonika uskoków i fałdów [Fault and fold tectonics]. Geological Press (Warszawa), 360 pp. (in Polish)Google Scholar

  • Karacan, C.Ö. & Okandan, E., 2000. Fracture/cleat analysis of coals from Zonguldak Basin (northwestern Turkey) relative to the potential of coalbed methane production. International Journal of Coal Geology 44, 109-125.CrossrefGoogle Scholar

  • Karnkowski, P.H., 2008. Regionalizacja tektoniczna Polski - Niż Polski [Tectonic subdivision of Poland - Polish Lowlands]. Przegląd Geologiczny 56, 895-903. (in Polish) Kendall, P.F. & Briggs, H., 1933. The formation of rock joints and the cleat of coal. Proceedings of the Royal Society, Edinburgh 53, 164-187.Google Scholar

  • Kwiecińska, B. & Wagner, M., 1997. Typizacja cech jakościowych węgla brunatnego z krajowych złóż według kryteriów petrograficznych i chemiczno-technologicznych dla celów dokumentacji geologicznej złóż oraz obsługi kopalń [Classification of qualitative features of brown coal from Polish deposits according to petrographical, chemical and technological criteria]. Wydawnictwo Centrum PPGSMiE Polskiej Akademii Nauk (Kraków), 87 pp. (in Polish)Google Scholar

  • Kwiecińska, B. & Wagner, M., 2001. Możliwość zastosowania refleksyjności jako metody badawczej w klasyfikowaniu i technologicznej ocenie jakości węgla brunatnego [Application of reflectance in the natural and technological classification of brown coal]. Wydawnictwo Akademii Górniczo-Hutniczej (Kraków), 35 pp. (in Polish)Google Scholar

  • Laubach, S.E, Marrett, R.A., Olson, J.E. & Scott, A.R., 1998. Characteristics and origins of coal cleat: a review. International Journal of Coal Geology 35, 175-207.CrossrefWeb of ScienceGoogle Scholar

  • Law, B.E., 1993. The Relationship between coal rank and cleat spacing: implications for the prediction of permeability in coal. Proceedings of International Coalbed Methane Symposium II, the University of Alabama (Tuscaloosa), 435-441.Google Scholar

  • Macuda, J., Nodzeński, A., Wagner, M. & Zawisza, L., 2011. Sorption of methane on lignite from Polish deposits. International Journal of Coal Geology 87, 41-48.Web of ScienceCrossrefGoogle Scholar

  • Marshak, S. & Mitra, G., 2006. Basic methods of structural geology (2nd ed.)., Prentice Hall (New Jersey), 446 pp.Google Scholar

  • McCulloch, C.M., Deul, M. & Jeran, P.W., 1974. Cleats in bituminous coalbeds. U.S. Bureau of Mines Report of Investigations Report 7910, 23 pp.Google Scholar

  • McCulloch, C.M., Lambert, S.W. & White, J.R., 1976. Determining cleat orientations of deeper coalbeds from overlying coals. U.S. Bureau of Mines Report of Investigations Report 8116, 24 pp.Google Scholar

  • Miall, A.D., 1977. A review of the braided-river depositional environment. Earth-Science Reviews 13, 1-62.Google Scholar

  • Nelson, W.J., 1983. Geologic disturbances in Illinois coal seams. Illinois State Geological Survey Circular 530, 50 pp.Google Scholar

  • Paul, S. & Chatterjee, R., 2011. Determination of in-situ stress direction from cleat orientation mapping for coal bed methane exploration in south-eastern part of Jharia coalfield, India. International Journal of Coal Geology 87, 87-96.Web of ScienceGoogle Scholar

  • Pietraszewski, A., 2013. Polskie górnictwo węgla brunatnego w 2012 roku [Polish lignite mining industry in 2012]. Węgiel Brunatny 82, http://www.ppwb.org.pl/wb/82/2.php. (in Polish)Google Scholar

  • Piwocki, M., 1992. Zasięg i korelacja głównych grup trzeciorzędowych pokładów węgla brunatnego na platformowym obszarze Polski [Extent and correlations of main groups of the Tertiary lignite seams on Polish platform area]. Przegląd Geologiczny 40, 281-286. (in Polish)Google Scholar

  • Piwocki, M., 1987. Chemiczne i technologiczne właściwości głównych trzeciorzędowych grup pokładów węgla brunatnego w Polsce [Chemical and technological properties of the main groups of Tertiary brown coal seams in Poland]. Biuletyn Instytutu Geologicznego 357, 41-60. (in Polish)Google Scholar

  • Piwocki, M. & Ziembińska-Tworzydło, M., 1997. Neogene of the Polish Lowlands - lithostratigraphy and pollen-spore zones. Geological Quarterly 41, 21-40.Google Scholar

  • Pollard, D.D. & Fletcher, R.C., 2005. Fundamentals of structural geology. Cambridge University Press (Cambridge), 500 pp.Google Scholar

  • Price, N. & Cosgrove, J., 1990. Analysis of geological structures. Cambridge University Press (Cambridge), 502 pp.Google Scholar

  • Sadowska, A. & Giża, B., 1991. Flora i wiek węgla brunatnego z Pątnowa [The flora and age of the brown coal from Pątnów]. Acta Palaeobotanica 31, 201-214. (in Polish)Google Scholar

  • Solano-Acosta, W., Mastalerz, M. & Schimmelmann, A., 2007. Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana. International Journal of Coal Geology 72, 187-208.Web of ScienceCrossrefGoogle Scholar

  • Su, X., Feng, Y., Chen, J. & Pan, J., 2001. The characteristics and origins of cleat in coal from Western North China. International Journal of Coal Geology 47, 51-62.Google Scholar

  • Ting, F.T.C., 1977. Origin and spacing of cleats in coal beds. Journal of Pressure Vessel Technical Transactions ASME 99, 624-626.Google Scholar

  • Troć, M. & Sadowska, A., 2006. Wiek formacji poznańskiej na obszarze Poznania [The age of the Poznań Formation in the Poznań region]. Przegląd Geologiczny 54, 588-593. (in Polish)Google Scholar

  • Twiss, R.J. & Moores, E.M., 1992. Structural geology. W.H. Freeman & Company (New York), 532 pp.Google Scholar

  • Ważyńska, H. (Ed.), 1998. Palynology and palaeogeography of the Neogene in Polish Lowlands. Prace Państwowego Instytutu Geologicznego 160, 1-41. (in Polish)Google Scholar

  • Widera, M., 2012. Macroscopic lithotype characterisation of the 1st Middle-Polish (1st Lusatian) Lignite Seam in the Miocene of central Poland. Geologos 18, 1-11.CrossrefGoogle Scholar

  • Widera, M., 2013a. Changes of the lignite seam architecture - a case study from Polish lignite deposits. International Journal of Coal Geology 114, 60-73.Web of ScienceGoogle Scholar

  • Widera, M., 2013b. Sand- and mud-filled fluvial palaeochannels in the Wielkopolska Member of the Neogene Poznań Formation, central Poland. Annales Societatis Geologorum Poloniae 83, 19-28.Google Scholar

  • Widera, M., Ćwikliński W. & Karman R., 2008. Cenozoic tectonic evolution of the Poznań-Oleśnica Fault Zone, central-western Poland. Acta Geologica Polonica 58, 455-471.Google Scholar

  • Widera, M. & Hałuszczak, A., 2011. Stages of the Cenozoic tectonics in central Poland: examples from selected grabens. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften 162, 203-214. Google Scholar

About the article

Received: 2013-12-12

Accepted: 2014-01-25

Published Online: 2014-05-17

Published in Print: 2014-03-01


Citation Information: Geologos, Volume 20, Issue 1, Pages 3–12, ISSN (Online) 2080-6574, ISSN (Print) 1426-8981, DOI: https://doi.org/10.2478/logos-2014-0001.

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