Record details

Title
    Geochemical and stable carbon isotopic composition of coal-related gases from the SW Upper Silesian Coal Basin, Czech Republic
Author
    Bůzek, František
    Franců, Juraj
    Hemza, Petr
    Krooss, Bernd
    Littke, Ralf
    Weniger, Philipp
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Organic geochemistry
Vol./nr.
    Roč. 53, č. DEC
Pages
    13
Year
    2012
Thesaurus term
    Upper Silesian Coal Basin, thermogenic gas, microbial gas, coalbed methane, stable carbon isotopes, canister desorption
Keyword
    Basin
    Carbon
    Coal
    Coal-related
    Composition
    Czech
    Gases
    Geochemical
    Isotopic
    Republic
    Silesian
    Stable
    SW
    Upper
Abstract (in english)
   Gas associated with Carboniferous coal seams and younger Miocene sediments in the SW Upper Silesian Basin in Czech Republic shows wide compositional variation. Coal-related gas extracted from cross-measure degassing boreholes, as well as gas released during canister desorption of coal samples from three different mines was analyzed to evaluate the genetic origin and the influence of sorption / desorption processes on the gas composition. Analyses comprised the compositional and stable carbon and isotope composition of coal-related gases. The isotopic composition of gas from cross-measure boreholes indicates thermogenic origin in the southern part of the basin and microbial CO2 reduction and mixed type origin in the northern part. Gas from canister desorption shows similar origins, but larger compositional and isotopic variation. No consistent isotopic fractionation due to desorption could be observed. Differences in geochemical composition of thermogenic gases could indicate a contribu
   tion of gas migrated from deeper formations below the Carpathian overthrust.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014