Castle Conglomerate Unit of the Upper Silesian Basin (Czech Republic and Poland): a record of the onset of Late Mississippian C2 glaciation?

 

Authors: Jirásek J, Sedláčková L, Sivek M, Martínek K, Jureczka J

Published in: Bulletin of Geosciences, volume 88, issue 4; pages: 893 - 914; Received 3 May 2012; Accepted in revised form 27 March 2013; Online 30 October 2013

Keywords: Ostrava Formation, Upper Silesian Basin, Mississippian, Carboniferous, sedimentology, glaciation, paleovalley,

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Abstract

The Castle Conglomerate Unit in the Poruba Member (Early Namurian, Mississippian) is a lithosome composed of coarse-grained sandstones and conglomerates. Its thickness, lithology and extensive area make it unique in the paralic sequence of the Ostrava Formation of the Upper Silesian Basin. The unit was studied on the basis of information from exploratory boreholes, mines and its outcrop at the type locality in the Lučina Valley in Silesian Ostrava. Locally, the unit attains a thickness of up to 115 m (average 24.4 m). Its present-day area is approximately 992 km2. The axis of the conglomerate facies (with character of interbeds) in the unit has a NNE-SSW alignment and coincides with the axis of the basin’s maximum subsidence during the sedimentation of the Poruba Member. The maximum aggregate thickness of the conglomerate facies is 60 m; their present-day area of occurrence is approximately 480 km2. The Castle Conglomerate Unit represents deposits of a low-sinuosity river system. The upper part of the multistorey channel fill is characterised by channels filled with sand bedforms and occasional bars. Palaeocurrents show a low spread of vectors, primarily to the NNW. The lower part does not crop out; it is known, therefore, only from boreholes. The presence of the unit’s coarse-grained clastics inside the basin filling, which is dominated by siltstone and medium-grained sandstone, indicates a major drop in the base level, which is interpreted here as a drop in the sea level. We correlate this event with the major glacio-eustatic sea level drop at 323 Ma that can be connected with the onset of glaciation interval C2 of the Late Paleozoic Ice Age. Because the resolution of available stratigraphic and geochronologic data is not currently sufficient, an alternative explanation of the tectonic origin cannot be ruled out of the discussion and may also be valid in regard to the active Variscan foreland.

References

BANAŚ, M., PASZKOWSKI, M. & CLAUER, N. 1995. K-Ar ages of white micas from the Upper Carboniferous rocks of Upper Silesian Coal Basin. Studia Geologica Polonica 108, 21-25.

BEK, J. 2008. Late Mississippian-early Pennysylvanian (Serpukhovian-Bashkirian) miospore assemblages of the Bohemian part of the Upper Silesian Basin, Czech Republic. Review of Palaeobotany and Palynology 152(1-2), 40-57.View article

BELT, E.S., HECKEL, P.H., LENTZ, L.J., BRAGONIER, W.A. & LYONS, T.W. 2011. Record of glacial-eustatic sea-level fluctuations in complex middle to late Pennsylvanian facies in the Northern Appalachian Basin and relation to similar events in the Midcontinent basin. Sedimentary Geology 238(1-2), 79-100.View article

BISHOP, J.W., MONTANEZ, I.P. & OSLEGER, D.A. 2010. Dynamic Carboniferous climate change, Arrow Canyon, Nevada. Geosphere 6(1), 1-34.View article

BRIDGE, J.S. 1993. Description and interpretation of fluvial deposits: a critical perspective. Sedimentology 40(4), 801-810.View article

BRIEDA, J. 1972. Hornicko-geologické problémy porubských vrstev v československé části hornoslezské černouhelné pánve. 121 pp. Ph.D. thesis, Vysoká škola báňská, Ostrava, Czech Republic. [in Czech]

BRIEDA, J., GRMELA, A. & PLÁŠEK, O. 1973. Poruba-Schichten im Nordteil der Ostrauer Brachysynklinale. Časopis pro mineralogii a geologii 18(4), 399-404. [in Czech with German summary]

BUŁA, Z. & ŻABA, J. 2005. Pozycja tektoniczna Górnośląskiego Zagłębia Węglowego na tle prekambryjskiego i dolnopaleozoicznego podłoża, 15-42. In JURECZKA, J., BUŁA, Z. & ŻABA, J. (eds) LXXVI Zjazd Naukowy Polskiego Towarzystwa Geologicznego. Państwowy Instytut Geologiczny, Warszawa. [in Polish]

DAVIES, N.S. & GIBLING, M.R. 2011. Evolution of fixed-channel alluvial plains in response to Carboniferous vegetation. Nature Geoscience 4(9), 629-633.View article

DAVYDOV, V.I., CROWLEY, J.L., SCHMITZ, M.D. & POLETAEV, V.I. 2010. High-precision U-Pb zircon age calibration of the global Carboniferous time scale and Milankovitch band cyclicity in the Donets Basin, eastern Ukraine. Geochemistry, Geophysics, Geosystems 11, Q0AA04.View article

DAVYDOV, V.I., KORN, D. & SCHMITZ, M.D. 2012. The Carboniferous Period, 603-651. In GRADSTEIN, F.M., OGG, J.G., SCHMITZ, M.D. & OGG, G.M (eds) The Geologic Time Scale 2012, Volume 2. Elsevier, Oxford.

DEMBOWSKI, Z. 1972a. General Information on the Upper Silesian Basin. Prace Instytutu Geologicznego 61, 9-22. [in Polish with English abstract]

DEMBOWSKI, Z. 1972b. The Cracow Sandstone Series of the Upper Silesian Coal Basin. Prace Instytutu Geologicznego 61, 509-538. [in Polish with English abstract]

DOKTOR, M. & GRADZIŃSKI, R. 1998. Deposition of the Zamecki Conglomerate (Poruba Beds, Upper Silesian Coal Basin), 7-10. In XXI Sympozjum Geologia formacji węglonośnych Polski. Wydawnictwo AGH, Kraków. [in Polish with English abstract]

DOKTOROWICZ-HREBNICKI, S. 1935. Mapa szczegółowa Polskiego Zagłębia Węglowego 1:25.000. Arkusz Grodziec: Objaśnienie. 217 pp. Państwowy Instytut Geologiczny, Warszawa. [in Polish with French resume]

DOPITA, M. 1959. Jednotný způsob označení uhelných slojí v ostravsko-karvinském revíru. MS, Sdružení OKD, Ostrava. [in Czech]

DOPITA, M. 1968. Geological and Mining Problems of Exploiting Saddle Beds in the Ostrava-Karviná Coalfield. Přírodovědecký sborník Ostravského kraje 24, 45-72. [in Czech with English summary]

DOPITA, M., AUST, J., BRIEDA, J., ČERNÝ, I., DVOŘÁK, P., FIALOVÁ, V., FOLDYNA, J., GRMELA, A., GRYGAR, R., HOCH, I., HONĚK, J., KAŠTOVSKÝ, V., KONEČNÝ, P., KOŽUŠNÍKOVÁ, A., KREJČÍ, B., KUMPERA, O., MARTINEC, P., MERENDA, M., MÜLLER, K., NOVOTNÁ, E., PTÁČEK, J., PURKYŇOVÁ, E., ŘEHOŘ, F., STRAKOŠ, Z., TOMIS, L., TOMŠÍK, J., VALTEROVÁ, P., VAŠÍČEK, Z., VENCL, J. & ŽÍDKOVÁ, S. 1997. Geology of the Czech Part of the Upper Silesian Basin. 280 pp. Ministerstvo životního prostředí České republiky, Praha. [in Czech with English abstract]

DOPITA, M. & HAVLENA, V. 1960. Die stehenden Baumstämme und Baumstöcke in der oberen Schichtengruppe von Ostrava (Namurien A, Oberschlesisches Becken). Přírodovědný časopis slezský 21(3), 289-298. [in Czech with German summary]

DOPITA, M. & KUMPERA, O. 1993. Geology of the Ostrava-Karviná coalfield, Upper Silesian Basin, Czech Republic, and its influence on mining. International Journal of Coal Geology 23(1-4), 291-321.View article

DVOŘÁK, J. 1994. Variscan flysch development in the Nízký Jeseník Mts. in Moravia and Silesia. Český geologický ústav, Praha. [in Czech with English summary]

DYBOVÁ, S. & JACHOWICZ, A. 1957a. Microspore zones in Upper Silesian Productive Carboniferous. Kwartalnik geologiczny 1(1), 193-212. [in Polish with English summary]

DYBOVÁ, S. & JACHOWICZ, A. 1957b. Microspore-Zones of the Carboniferous of the Ostrava-Karviná Region. Sborník Ústředního ústavu geologického, Oddíl paleontologický 24, 97-110. [in Czech with English summary]

FIELDING, C.R., FRANK, T.D., BIRGENHEIER, L.P., RYGEL, M.C., JONES, A.T. & ROBERTS, J. 2008. Stratigraphic imprint of the Late Palaeozoic Ice Age in eastern Australia: a record of alternating glacial and nonglacial climate regime. Journal of the Geological Society 165(1), 129-140.View article

FILÁK, P. 2006. The influence of fluvial systems on the development of coal seams in the Petřkovice Member (lower part of Ostrava Formation, Namurian A, Czech part of the Upper Silesian Coal Basin). 133 pp. Ph.D. thesis, Vysoká škola báňská - Technical University of Ostrava, Czech Republic. [in Czech with English summary]

GASTALDO, R.A., PURKYŇOVÁ, E. & ŠIMŮNEK, Z. 2009a. Megafloral perturbation across the Enna Marine Zone in the Upper Silesian Basin attests to late Mississippian (Serpukhovian) deglaciation and climate change. Palaios 24(6), 351-366.View article

GASTALDO, R.A., PURKYŇOVÁ, E., ŠIMŮNEK, Z. & SCHMITZ, M.D. 2009b. Ecological persistence in the Late Mississippian (Serpukhovian, Namurian A) megafloral record of the Upper Silesian Basin, Czech Republic. Palaios 24(6), 336-350.View article

GIBLING, M.R. & WIGHTMAN, W.G. 1994. Palaeovalleys and protozoan assemblages in a Late Carboniferous cyclothem, Sydney Basin, Nova Scotia. Sedimentology 41(4), 699-719.View article

GROVES, J.R. & YUE, W. 2009. Foraminiferal diversification during the late Paleozoic ice age. Paleobiology 35(3), 367-392.View article

GRYGAR, R. & VAVRO, M. 1995. Evolution of Lugosilesian Orocline (North-eastern periphery of the Bohemian Massif): Kinematics of Variscian deformation. Journal of the Czech Geological Society 40(1-2), 65-90.

HAMPSON, G., STOLLHOFEN, H. & FLINT, S. 1999. A sequence stratigraphic model for the Lower Coal Measures (Upper Carboniferous) of the Ruhr district, north-west Germany. Sedimentology 46(6), 1199-1231.View article

HAQ, B.U. & SCHUTTER, S.R. 2008. A Chronology of Paleozoic Sea-Level Changes. Science 322, 64-68.View article

HAVLENA, V. 1982. The Namurian deposits of the Upper Silesian Basin. Rozpravy Československé akademie věd, Řada matematických a přírodních věd 92(7), 1-41.

HAVLENA, V. 1988. The cyclicity of the Namurian coal-bearing strata in Upper Silesia. Časopis pro mineralogii a geologii 33(4), 357-369.

HENRY, L.C., ISBELL, J.L., LIMARINO, C.O., McHENRY, L.J. & FRASIER, M.L. 2010. Mid-Carboniferous deglaciation of the Protoprecordillera, Argentina recorded in the Agua de Jagüel palaeovalley. Palaeogeography, Palaeoclimatology, Palaeoecology 298(1-2), 112-129.View article

HESS, H.J. & LIPPOLT, J.C. 1986. 40Ar/39Ar ages of tonstein and tuff sanidines: New calibration points for the improvement of the Upper Carboniferous time scale. Chemical Geology 59, 143-154.View article

HÝLOVÁ, L., JURECZKA, J., JIRÁSEK, J., SIVEK, M. & HOTÁRKOVÁ, J. 2013. The Petřkovice Member (Ostrava Formation, Mississippian) of the Upper Silesian Basin (Czech Republic and Poland). International Journal of Coal Geology 106, 11-24.View article

JANSA, L. 1967. Sedimentological evolution of Carboniferous Formations in the southern part of the Upper Silesian Basin. 247 pp. Ph.D. thesis, Vědecko-výzkumný uhelný ústav Ostrava, Czech Republic. [in Czech]

JANSA, L. & TOMŠÍK, J. 1960. Použití metody faciálně cyklické analýzy v ostravsko-karvinském karbonu. Pracovní metody geologické služby 1, 497-518.

JERRETT, R.M., FLINT, S.S., ROY, D.C. & HODGSON, D.M. 2011. Sequence stratigraphic interpretation of a Pennsylvanian (Upper Carboniferous) coal from the Appalachian Basin, USA. Sedimentology 58(5), 1180-1207.View article

JIRÁSEK, J., HÝLOVÁ, L., SIVEK, M., JURECZKA, J., MARTÍNEK, K., SÝKOROVÁ, I. & SCHMITZ, M. 2013. Major Mississippian volcaniclastic unit of the Upper Silesian Basin, the Main Ostrava Whetstone: composition, sedimentary processes, palaeogeography and geochronology. International Journal of Earth Sciences 102, 989-1006.View article

JURECZKA, J. 1988. Nowe dane o charakterystyce litostratygraficznej kontaktu serii paralicznej i górnoślaskiej serii piaskowcowej karbonu zachodniej części Górnosląskiego Zagłebia Węgłowego, 41-66. In XI Sympozjum Geologia formacji węglonośnych Polski. Wydawnictwo AGH, Kraków. [in Polish]

JURECZKA, J., DOPITA, M., GAŁKA, M., KRIEGER, W., KWARCIŃSKI, J. & MARTINEC, P. 2005. Geological Atlas of Coal Deposits of the Polish and Czech Parts of the Upper Silesian Coal Basin. 31 pp. Państwowy Instytut Geologiczny & Ministerstwo Środowiska, Warszawa.

JURECZKA, J. & KOTAS, A. 1995. Coal deposits - Upper Silesian Coal Basin. Prace Państwowego Instytutu Geologicznego 148, 164-173.

KALVODA, J., BÁBEK, O., FATKA, O., LEICHMANN, J., MELICHAR, R., NEHYBA, S. & ŠPAČEK, P. 2008. Brunovistulian terrane (Bohemian Massif, Central Europe) from late Proterozoic to late Paleozoic: a review. International Journal of Earth Sciences 97, 497-518.View article

KANDARACHEVOVÁ, J., HÝLOVÁ, L. & SEDLÁČKOVÁ, L. 2008. Possibilities of utilization of software tools in modelling of development of geological parameters in the study of geology of coal basins, 27-29. In Geo-Sympozjum Młodych Badaczy Silesia 2008, Współczesne Trendy w naukach o Ziemi, 5.-7.11. 2008, Złoty Potok. Wydział Nauk o Ziemi Uniwersytetu Śląskiego, Sosnowiec.

KANDARACHEVOVÁ, J., SEDLÁČKOVÁ, L., HÝLOVÁ, L, JIRÁSEK, J. & SIVEK, M. 2009. Lateral development of coalification in the Czech part of the Upper Silesian Coal Basin and its connection with gas deposits. International Journal of Coal Geology 78(3), 225-232.View article

KĘDZIOR, A., GRADZIŃSKI, R., DOKTOR, M. & GMUR, D. 2007. Sedimentary history of a Mississippian to Pennsylvanian coal-bearing succession: an example from the Upper Silesia Coal Basin, Poland. Geological Magazine 144(3), 487-496.View article

KOTAS, A. 1995. Lithostratigraphy and sedimentologic-paleogeographic development - Upper Silesian Coal Basin. Prace Państwowego Instytutu Geologicznego 148, 124-134.

KOTAS, A., BUŁA, Z. & JURECZKA, J. 1988. Problematyka podziału litostratygraficznego Górnosląskiej serii piaskowcowej karbonu GZW w świetle zasad kodeksu stratygraficznego, 55-61. In XI Sympozjum Geologia formacji węglonośnych Polski. Wydawnictwo AGH, Kraków. [in Polish]

KOTAS, A. & MALCZYK, W. 1972a. The Paralic Series of the Lower Namurian Stage of the Upper Silesian Coal Basin. Prace Instytutu Geologicznego 61, 329-426. [in Polish with English abstract]

KOTAS, A. & MALCZYK, W. 1972b. The Upper Silesian Sandstone Series of the Upper Namurian Stage of the Upper Silesian Coal Basin. Prace Instytutu Geologicznego 61, 427-466. [in Polish with English abstract]

KUMPERA, O. 1990. Outline of the Paleozoic sediments below the Upper Silesian Carboniferous coal-bearing molasse in Upper Silesian Basin. Sborník vědeckých prací Vysoké školy báňské v Ostravě, Řada hornicko-geologická 36, 91-106.

KUMPERA, O. 1997. Controls on the evolution of the Namurian paralic basin, Bohemian Massif, Czech Republic, 13-27. In GAYER, R. & PEŠEK, J. (eds) European Coal Geology and Technology. Geological Society of London, Special Publication 125.

KUMPERA, O. & MARTINEC, P. 1995. The development of the Carboniferous accretionary wedge in the Moravian-Silesian Paleozoic Basin. Journal of the Czech Geological Society 40(1-2), 47-64.

LEEDER, M.R., HARRIS, T. & KIRKBY, M.J. 1998. Sediment supply and climate change: implications for basin stratigraphy. Basin Research 10(1), 7-18.View article

MARTINEC, P., JIRÁSEK, J., KOŽUŠNÍKOVÁ, A. & SIVEK, M. (eds) 2005. Atlas of coal - the Czech part of the Upper Silesian Basin. 64 pp. Anagram, Ostrava. [in Czech with English abstract]

MARTINSEN, O.J., RYSETH, A., HELLAND-HANSEN, W., FLESCHE, H., TORKILDSEN, G. & IDIL, S. 1999. Stratigraphic base level and fluvial architecture: Ericson Sandstone (Campanian), Rock Springs Uplift, SW Wyoming, USA. Sedimentology 46(2), 235-259.View article

MIALL, A.D. 1985. Architectural-element analysis: a new method of facies analysis applied to fluvial deposits. Earth-Science Reviews 22(4), 261-308.View article

OPLUŠTIL, S. 2005. Evolution of the Middle Westphalian river valley drainage system in central Bohemia (Czech Republic) and its palaeogeographic implication. Palaeogeography, Palaeoclimatology, Palaeoecology 222(3-4), 223-258.View article

PASZKOWSKI, M. 1994. New data about lithology and provenance of exotic pebbles from Poruba and Saddle Beds of western part of Upper Silesian Coal Basin, 47-56. In KONEČNÝ, P. & MARTINEC, P. (eds) Sborník referátů 2. česko-polské konference o sedimentologii karbonu hornoslezské pánve. Ústav geoniky AV ČR, Ostrava. [in Polish with English abstract]

PASZKOWSKI, M., JACHOWICZ, M., MICHALIK, M., TELLER, L., UCHMAN, A. & URBANEK, Z. 1995. Composition, age and provenance of gravel-sized clasts from the Upper Carboniferous of the Upper Silesia Coal Basin (Poland). Studia Geologica Polonica 108, 45-127.

PEŠEK, J. & SÝKOROVÁ, I. 2006. A review of the timing of coalification in the light of coal seam erosion, clastic dykes and coal clasts. International Journal of Coal Geology 66(1-2), 13-34.View article

PETRASCHECK, W. 1910. Das Alter der Flöze in der Peterswalder Mulde und die Natur der Orlauer und der Michálkowitzer Störung im Mährisch-Ostrauer Steinkohlenrevier. Jahrbuch der Kaiserlich-königlichen geologischen Reichsanstalt 60(4), 779-814.

POINTON, M.A., CHEW, D.M., OVTCHAROVA, M., SEVASTOPULO, G.D. & CROWLEY, Q.G. 2012. New high-precision U-Pb dates from western European Carboniferous tuffs; implications for time scale calibration, the periodicity of late Carboniferous cycles and stratigraphical correlation. Journal of the Geological Society 169(6), 713-721.View article

PORZYCKI, J. 1972. The Siltstone Series of the Lower Westphalian Stage of the Upper Silesian Coal Basin. Prace Instytutu Geologicznego 61, 467-508. [in Polish with English abstract]

POWELL, M.G. 2008. Timing and selectivity of the Late Mississippian mass extinction of brachiopod genera from the Central Appalachian Basin. Palaios 23(7-8), 525-534.View article

PŘIBYL, A. 1954. Cyklická sedimentace v ostravsko-karvinském kamenouhelném revíru. Sborník Ústředního ústavu geologického 21, 57-82. [in Czech]

RYGEL, M.C., FIELDING, C.R., FRANK, T.D. & BIRGENHEIER, L.P. 2008. The magnitude of Late Paleozoic glacioeustatic fluctuations: a synthesis. Journal of Sedimentary Research 78(7-8), 500-511.View article

ŘEHOŘ, F. 1970. Die Goniatiten-Zonen der Ostrava-Schichtengruppe (Namur A). Věstník Ústředního ústavu geologického 45, 213-216. [in German]

ŘEHOŘ, F. & ŘEHOŘOVÁ, M. 1985. Faunistické horizonty porubských vrstev ostravského souvrství moravské části hornoslezské pánve. Acta Facultatis paedagogicae ostraviensis 94, 63-81. [in Czech]

SCHMITZ, M.D. & DAVYDOV, V.I. 2012. Quantitative radiometric and biostratigraphic calibration of the Pennsylvanian Early Permian (Cisuralian) time scale and pan-Euramerican chronostratigraphic correlation. Geological Society of America Bulletin 124(3-4), 549-577.View article

SEDLÁČKOVÁ, L., JIRÁSEK, J., ROJÁKOVÁ, T. & SIVEK, M. 2007. „Zámecký“ Conglomerate - An Important Event in the Development of the Poruba Member (Lower Namurian) in the Czech Part of the Upper Silesian Basin, 125-132. In XXX Sympozjum Geologia formacji węglonośnych Polski. Wydawnictwo AGH, Kraków.

SIVEK, M., DOPITA, M., KRŮL, M., ČÁSLAVSKÝ, M. & JIRÁSEK, J. 2003. Atlas of Chemical-Technological Properties of Coals in the Czech Part of the Upper Silesian Basin. 31 pp. Vysoká škola báňská - Technical University of Ostrava, Ostrava.

SKOČEK, V. 1991. Indications of the Late Carboniferous eustatic and climatic oscillations in the Upper Silesian Basin. Věstník Ústředního ústavu geologického 66(2), 85-95.

STRAKOŠOVÁ, O. 1973. Výsledky hlubokého strukturního vrtu SV 2 Stonava. Sborník GPO 3, 51-66. [in Czech]

SWEET, D.E. & SOREGHAN, G.S. 2012. Estimating magnitudes of relative sea-level change in a coarse-grained fan delta system: Implications for Pennsylvanian glacioeustasy. Geology 40(11), 979-982.View article

ŚWIERCZEWSKA, A. 1995. Composition and provenance of Carboniferous sandstones from the Upper Silesia Coal Basin (Poland). Studia Geologica Polonica 108, 27-43.

ŠEVČÍK, V. 1989. Současné poznatky o redukci mocnosti stratigrafických jednotek ostravského souvrství v československé a polské části hornoslezské černouhelné pánve. Uhlí 37(3), 120-124. [in Czech]

ŠUSTA, M. 1928a. Rozdělení uhlonosného karbonu ostravsko-karvinské oblasti. Hornický věstník a Hornické a hutnické listy 10(16), 187. [in Czech]View article

ŠUSTA, M. 1928b. Stratigrafie ostravsko-karvinské kamenouhelné oblasti ve světle paleontologie, 341-429. In Kamenouhelné doly ostravsko-karvinského revíru. Ředitelská konference ostravsko-karvinského kamenouhelného revíru v Moravské Ostravě, Moravská Ostrava. [in Czech]

WATERS, C.N. & CONDON, D.J. 2012. Nature and timing of Late Mississippian to Mid-Pennsylvanian glacio-eustatic sea-level changes of the Pennine Basin, UK. Journal of the Geological Society 169(1), 37-51.View article

ZEMAN, J. 1960. Megacyclothems in the Ostrava-Karviná District. Věstník Ústředního ústavu geologického 35, 299-313. [in Czech with English summary]

ZEMAN, J. & KUPKA, J. 1958. Die Frage der Genesis und der stratigraphischen Bedeutung des Zámek-Konglomerats in den oberen Ostrava-Schichten. Věstník Ústředního ústavu geologického 33, 274-278. [in Czech with German summary]

ŽÍDKOVÁ, S., KREJČÍ, B., MARTINEC, P., DOPITA, M. & BRIEDA, J. 1997. Ostravské souvrství, 43-87. In DOPITA, M. (ed.) Geology of the Czech Part of the Upper Silesian Basin. Ministerstvo životního prostředí České republiky, Praha. [in Czech with English abstract]