Record details

Title
    Coal clasts in the Carboniferous sediments of the Upper Silesian basin
Statement of responsibility
    Alena Kožušníková, Petr Martinec, Jiří Pešek, Pavla Valterová
Author
    Kožušníková, Alena
    Martinec, Petr, 1942-
    Pešek, Jiří, 1936-
    Valterová, Pavla
Language
    anglicky
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
Vol./nr.
    Vol. 74, no. 2
Pages
    p. 109-114
Year
    1999
Notes
    8 fot., 3 tab., 10 bibl.
    České resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    analýza petrografická
    hornoslezská pánev
    karbon-svrchní
    macerály
    miospory
    sedimenty bohaté organickým uhlíkem
    sedimenty klastické
    uhlí bituminózní
Geographical name
    ČR-Morava
    Karviná
    Ostrava
Keyword
    Basin
    Carboniferous
    Clasts
    Coal
    Sediments
    Silesian
    Upper
Abstract (in english)
   Coal clasts (pebbles, fragments and coarse coalfield plant remains) and coalfied plant debris are common constituents of the Upper Carboniferous sediments of the Upper Silesian basin. The coal clasts were analysed in detail to determine their maceral composition, coal rank and age. The coal rank of the coal clasts determined by mean vitrinite reflectance Ro was compared with the coal rank of the stratigraphically adjacent coal seam. The Ro values for coal clasts are lower than those for the coal seam. In the drill cores which are about 10-20 cm long often several coal clasts can be found which differ in their maceral composition. The rank of these clasts is also often different. These differences do not appear to be regular. In some case the Ro values for a coal clast with dominant vitrinite composition are higher than for the coal with trimacerite composition but in the other cases it is the older way round.
   Both plastic and brittle deformation of coal matter occur at the contact of the coal clast and host rock. Pyrite mineralization occurs commonly at the contact between the coal clast and adjacent rock or in the marginal zone of the coal clast close to the contact. The coal clasts were classified stratigraphically by means of palynological anallysis. The majority of coal clasts were derived from the Ostrava Formation (Lower Namurian = Namurian A). One sample of coal clasts was derived from the Karviná Formation (Saddle Member, Middle Namurian = Namurian B). All clasts with exception of one of them have been sampled from the Saddle and Lower Suchá Members (Middle to Upper Namurian = Namurian B and C)
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012