Fig 8 - uploaded by Marek Leszek Solecki
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An average maceral composition and secondary organic matter for samples from Bóbrka-Rogi Fold: A) an average values of percentage volume organic components for two samples from outcrops; B) an average percentage volume values of organic and secondary organic matter components for five samples from a deeper section of the D-1 borehole. Explanations: Alg -alginite, Bt -bituminite, Ld -liptodetrinite, Hum -huminite, Vit -vitrinite, Sp -sporinite, Iner -inertinite, Sb -solid bitumen
Source publication
In this study, optical microscopic analyses were applied to evaluate the thermal maturity, characteristics of solid bitumen, and other organic matter finely dispersed in Oligocene shales of the Menilite Formation in the Iwonicz-Zdrój–Rudawka Rymanowska Fold (IRF) and Bóbrka–Rogi Fold (BRF) of the Central Carpathian Synclinorium of the Silesian Napp...
Contexts in source publication
Context 1
... indicate the precursor maceral for solid bitumen, an average maceral composition and secondary product for Bóbrka-Rogi Fold was counted (Fig. 8). As already observed, the average percentage volume of vitrinite (huminite, if <0.5% VR o , ICCP 1998) and inertinite did not change greatly in samples from the deeper part of D-1 borehole, compared to the average percentage volume of organic matter in the outcrop samples. The significant changes (a more than twofold reduction) are ...
Context 2
... Stefaniuk M. It can be suggested that the OM dispersed in the outcrop of the Menilite Formation from the Bóbrka-Rogi Fold was the starting material for the thermally matured sediments from the deeper section of the D-1 borehole (Fig. 2). During thermal maturation, its maceral composition changed, with the primary organic matter of mostly alginite (Fig. 8) decreasing and being transformed into a secondary product such as solid bitumen, and finally ...
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Citations
... The interpreted salinity changes are important to acquire a better understanding of the organic matter preservation of the Menilite Formation, which is well known for its hydrocarbon potential (e.g., Wójcik-Tabol et al., 2022). The organic petrography in the Oligocene of the Carpathians' successions has been mainly used as an indicator of organic matter origin and hydrocarbon potential (Kruge et al., 1996;Puglisi et al., 2006;Miclȃus et al., 2009;Belkin et al., 2010;Waliczek and Więcław, 2012;Wójcik-Tabol, 2015, 2017Wendorff et al., 2017;Kosakowski et al., 2018;Ziemianin, 2018Ziemianin, , 2020Zielińska et al., 2020;Waliczek et al., 2022). ...
... Telalginite may have two algal sources: marine (e.g., Tasmanites) or fresh-water (Botryococcus) (Hutton, 1987). Typical Tasmanites have not been observed in the samples, although they have been described in the Menilite Shales (e.g., Ziemianin, 2018;Waliczek et al., 2022). The examined telalginite rather resembles Botryococcus, a freshwater algae that can also occur in sediments deposited in marine environments. ...
... Therefore, telalginite, which may originated from marine algae and/or from the fresh-water Botryococcus has often been recognised in saline water deposits (Liu et al., 2022;Shi-Ju et al., 2023). The Botryococcus has been also described in the bituminous shales of the Menilite Formation and its analogue from the Romanian Outer Carpathians (Waliczek et al., 2022;Filipek, 2020). ...
