Organic geochemical characterization of brown coals by thermal degradation and modified Rock-Eval method
The relationships between the organic geochemical features of brown coals and the peculiarities of the formation micro-environment determined on the basis of miscroscopic plant remnants of the samples have been studied. Samples were brown coals of Eocene age from the Dorog and Tatabánya basins (Hung...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1986
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| Sorozat: | Acta mineralogica-petrographica
28 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24751 |
| Tartalmi kivonat: | The relationships between the organic geochemical features of brown coals and the peculiarities of the formation micro-environment determined on the basis of miscroscopic plant remnants of the samples have been studied. Samples were brown coals of Eocene age from the Dorog and Tatabánya basins (Hungary, Transdanubia). The organic matter falls between the types II and III (i.e. between oil prone and gas prone). The more exact position of the samples within the group is determined mainly by the macro-environment (i.e. the locality). Within a given locality some relationships could be observed also among the microenvironmental features. The hydrocarbon genetic potential of the samples was characterized by experimental thermal degradation and step-by-step Rock-Eval pyrolysis. In case of Rock-Eval pyrolysis the isotherm temperature between the steps was increased by 20 °C. Based on the results it is plausible that the hydrocarbon genetic potential of brown coals and the oil quantity to be obtained by experimental thermal degradation are considerably influenced by the chemical-biological features of the microenvironment. The value of the gas-hydrocarbon genetic potential and its change as a function of temperature are unambiguously determined by the character of the micro-environment. Keywords: modified Rock-Eval pyrolysis, brown coal, hydrocarbon genetic potential, thermal degradation, plant remnants. |
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| Terjedelem/Fizikai jellemzők: | 95-108 |
| ISSN: | 0365-8066 |