Botor, Dariusz
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nauki o Ziemi i środowisku
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Item type:Article, Access status: Open Access , Modelowania 1-D procesów generowania gazu ziemnego w utworach karbońskich w głębokiej części polskiego basenu czerwonego spągowca(Wydawnictwa AGH, 2011) Botor, DariuszOne-dimensional numerical modeling of hydrocarbon generation in profiles of Carboniferous source rocks was performed. These source rocks were located in the substratum of select areas in the central deep Rotligend Basin (Objezierze IG-1, Piła IG-1, Byczyna-1, Brześć Kujawski IG-1, Budziszewice IG-1 and Kutno-1). Carboniferous sediments of the central deep basin with a mean random vitrinite reflectance of 1.0-2.7%, generated significant amounts of methane, with low nitrogen content. Gas generation processes occurred mostly during the Mesozoic era particularly between Early Triassic to Late Jurassic periods and achieved kerogen transformation ratio (TR) values of 77-100%.Item type:Article, Access status: Open Access , Hydrothermal fluids influence on the thermal evolution of the Stephanian sequence, the Sabero Coalfield (NW Spain)(Wydawnictwa AGH, 2012) Botor, DariuszIn the present study, the thermal history of the Late Carboniferous (Stephanian) coal-bearing sediments of the Sabero Coalfield has been reconstructed in order to elucidate coal rank. The Sabero Coalfield is located in a small intramontane coal-bearing basin along the Sabero-Gordón fault zone, one of the major E-W trending strike-slip fault systems of the southern part of the Cantabrian Zone (NW Spain). The total thickness of the Stephanian succession is in excess of 2,000 m, and is composed of siliclastic rocks and intercalated coal seams with tonsteins. Mean vitrinite reflectance values in the Stephanian rocks in the Sabero Coalfield are in the range from 0.61 to 3.14% Rr, but most values are in the range from 0.8 to 1.5% Rr (based on 84 samples). Average vitrinite reflectance gradient is high (0.73% Rr/km), which suggests high value of average paleogeothermal gradient (52°C/km). The maximum paleotemperatures calculated from vitrinite reflectance values for the Stephanian rocks range between 89°C (top of the Stephanian) and 195°C (bottom of the Stephanian). Coalification of the organic matter in the Stephanian rocks was achieved in the Early Permian, and was most likely related to several almost simultaneous related to magmatic and hydrothermal activity during high subsidence period in the pull-apart basin. The primary, burial-related maturity pattern, was probably slightly overprinted by fluid migration event, which is supposed to have occurred in Early Permian time.Item type:Article, Access status: Open Access , Ewolucja stopnia uwęglenia utworów górnokarbońskich w obszarze górniczym »Janina« w Libiążu we wschodniej części Górnośląskiego Zagłębia Węglowego (GZW)(Wydawnictwa AGH, 2009) Botor, DariuszMaturity modelling of the Upper Carboniferous sediments has been performed in order to explain the coalification history. Assuming 2000 m eroded overburden of the post-Stephanian sandstones paleoheat flow was 51 mW/m$^{2}$ in the latest Carboniferous time. The major coalification processes were likely occurred in the latest Carboniferous, and later a Mesozoic overprinting likely due to fluid migration was not significant for the organic matter maturity.