Comparative Petrographical and Organic Geochemical Study of Eocene and Oligocene Coal Basins from Sw Bulgaria
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In the current study formation of coal in the Suhostrel (Early-Mid Eocene) and the Bobov Dol (Late Oligocene) basins located in the SW Bulgaria was evaluated using organic petrographic characteristics and biomarker patterns. Furthermore, the potential of biomarkers to indicate climate cooling trend in the late Oligocene, which was less pronounced in Bulgaria compared to the global one was examined. Studied coals significantly differ in their coalification degree: Suhostrel (Ro ~ 1.10%), Bobov Dol (Ro ~ 0.45–0.50%). The obtained results show that main organic matter (OM) sources of Bobov Dol coal were mixed Pinaceae/Cupressaceae conifer communities from moderately wet oligo- to mesotrophic swamps. OM of Suhostrel coal is mainly derived from mixed angiosperm hydrophytic and woody vegetation, with the predominance of the former. The peatification was performed under reducing conditions with occasional marine ingressions into the paleomire. Although comparison of biomarker patterns at diff...erent OM maturity levels is complicated, some relevant indication can be observed from the compositions of non-hopanoid terpenoids, which showed that mild late Oligocene climate cooling in Bulgaria was associated with change from hydrophytic angiosperm- to gymnosperm-dominated peatlands. This is consistent with the results of investigation of the Bulgarian Paleogene flora.
Кључне речи:
Early-Mid Eocene Suhostrel Basin / Late Oligocene Bobov Dol Basin / SW Bulgaria / coal / organic petrography / biomarkers / the late Oligocene climate coolingИзвор:
31st International Meeting on Organic Geochemistry, 2023, 1-2Издавач:
- European Association of Geoscientists and Engineers
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200168 (Универзитет у Београду, Хемијски факултет) (RS-MESTD-inst-2020-200168)
Колекције
Институција/група
Hemijski fakultet / Faculty of ChemistryTY - CONF AU - Zdravkov, Alexander AU - Gross, Doris AU - Stojanović, Ksenija AU - Bechtel, Achim AU - Kojić, Ivan PY - 2023 UR - http://cherry.chem.bg.ac.rs/handle/123456789/6399 AB - In the current study formation of coal in the Suhostrel (Early-Mid Eocene) and the Bobov Dol (Late Oligocene) basins located in the SW Bulgaria was evaluated using organic petrographic characteristics and biomarker patterns. Furthermore, the potential of biomarkers to indicate climate cooling trend in the late Oligocene, which was less pronounced in Bulgaria compared to the global one was examined. Studied coals significantly differ in their coalification degree: Suhostrel (Ro ~ 1.10%), Bobov Dol (Ro ~ 0.45–0.50%). The obtained results show that main organic matter (OM) sources of Bobov Dol coal were mixed Pinaceae/Cupressaceae conifer communities from moderately wet oligo- to mesotrophic swamps. OM of Suhostrel coal is mainly derived from mixed angiosperm hydrophytic and woody vegetation, with the predominance of the former. The peatification was performed under reducing conditions with occasional marine ingressions into the paleomire. Although comparison of biomarker patterns at different OM maturity levels is complicated, some relevant indication can be observed from the compositions of non-hopanoid terpenoids, which showed that mild late Oligocene climate cooling in Bulgaria was associated with change from hydrophytic angiosperm- to gymnosperm-dominated peatlands. This is consistent with the results of investigation of the Bulgarian Paleogene flora. PB - European Association of Geoscientists and Engineers C3 - 31st International Meeting on Organic Geochemistry T1 - Comparative Petrographical and Organic Geochemical Study of Eocene and Oligocene Coal Basins from Sw Bulgaria SP - 1 EP - 2 DO - 10.3997/2214-4609.202333034 ER -
@conference{ author = "Zdravkov, Alexander and Gross, Doris and Stojanović, Ksenija and Bechtel, Achim and Kojić, Ivan", year = "2023", abstract = "In the current study formation of coal in the Suhostrel (Early-Mid Eocene) and the Bobov Dol (Late Oligocene) basins located in the SW Bulgaria was evaluated using organic petrographic characteristics and biomarker patterns. Furthermore, the potential of biomarkers to indicate climate cooling trend in the late Oligocene, which was less pronounced in Bulgaria compared to the global one was examined. Studied coals significantly differ in their coalification degree: Suhostrel (Ro ~ 1.10%), Bobov Dol (Ro ~ 0.45–0.50%). The obtained results show that main organic matter (OM) sources of Bobov Dol coal were mixed Pinaceae/Cupressaceae conifer communities from moderately wet oligo- to mesotrophic swamps. OM of Suhostrel coal is mainly derived from mixed angiosperm hydrophytic and woody vegetation, with the predominance of the former. The peatification was performed under reducing conditions with occasional marine ingressions into the paleomire. Although comparison of biomarker patterns at different OM maturity levels is complicated, some relevant indication can be observed from the compositions of non-hopanoid terpenoids, which showed that mild late Oligocene climate cooling in Bulgaria was associated with change from hydrophytic angiosperm- to gymnosperm-dominated peatlands. This is consistent with the results of investigation of the Bulgarian Paleogene flora.", publisher = "European Association of Geoscientists and Engineers", journal = "31st International Meeting on Organic Geochemistry", title = "Comparative Petrographical and Organic Geochemical Study of Eocene and Oligocene Coal Basins from Sw Bulgaria", pages = "1-2", doi = "10.3997/2214-4609.202333034" }
Zdravkov, A., Gross, D., Stojanović, K., Bechtel, A.,& Kojić, I.. (2023). Comparative Petrographical and Organic Geochemical Study of Eocene and Oligocene Coal Basins from Sw Bulgaria. in 31st International Meeting on Organic Geochemistry European Association of Geoscientists and Engineers., 1-2. https://doi.org/10.3997/2214-4609.202333034
Zdravkov A, Gross D, Stojanović K, Bechtel A, Kojić I. Comparative Petrographical and Organic Geochemical Study of Eocene and Oligocene Coal Basins from Sw Bulgaria. in 31st International Meeting on Organic Geochemistry. 2023;:1-2. doi:10.3997/2214-4609.202333034 .
Zdravkov, Alexander, Gross, Doris, Stojanović, Ksenija, Bechtel, Achim, Kojić, Ivan, "Comparative Petrographical and Organic Geochemical Study of Eocene and Oligocene Coal Basins from Sw Bulgaria" in 31st International Meeting on Organic Geochemistry (2023):1-2, https://doi.org/10.3997/2214-4609.202333034 . .