Source areas of the Grybów sub-basin: micropaleontological, mineralogical and geochemical provenance analysis (Outer Western Carpathians, Poland)

Abstract

Abstract:The Grybów Unit occurring in the Ropa tectonic window was the subject of micropaleontological and geochemical investigation. Studies, based on calcareous nannofossils, proved that the level of reworked microfossil is not higher than 22 % and it varies between two sections. Quantitative analyses of the reworked assemblages confirmed the domination of Cretaceous and Middle Eocene species. The Sub-Grybów Beds, Grybów Marl Formation and Krosno Beds were assigned to the Late Oligocene and represent the terminal flysch facies. Detrital material accumulated in the Oligocene sediments originated from the Marmarosh Massif, which is the eastern prolongation of the Fore-Magura Ridge

Elemental and organic carbon proxies for redox conditions of the Oligocene formations in the Ropa Tectonic Window (Outer Carpathians, Poland): palaeoenvironmental implications

“…2). These sections were described by Kozikowski (1956), Sikora (1960, 1970), OEl¹czka (1973, Oszczypko-Clowes (2008) and Oszczypko-Clowes et al (2015). The sections consist of strata referable to three thrust sheets.…”

“…Additionally, the Che³mski section displays more distal turbiditic facies (with Bouma intervals), which contain less detritus and lower numbers of reworked nannofossils. Contrary to that, the Górnikowski section represents more proximal turbiditic facies with Tab Bouma intervals (Oszczypko-Clowes, 2008;Oszczypko-Clowes et al, 2015). However, Bojanowski (2007) proposed that the fine-grained Krosno succession represents proximal turbidite facies, deposited between submarine canyons, by way of which currents carried coarse-grained material to more distal and deeper parts of the basin.…”

Palynofacies analysis, sedimentology and hydrocarbon potential of the Menilite Beds (Oligocene) in the Slovakian and Romanian Outer Carpathians

“…Ac cord ing to many stud ies, de po si tion within the Carpathians took place in a se ries of bas ins or sub-bas ins that cor respond to the pres ent-day units of the Outer Carpathians (Ksi¹¿kiewicz, 1972;Golonka and Krobicki, 2004;OEl¹czka et al, , 2012Oszczypko-Clowes et al, 2015). The Skole, Sub-Silesian, Silesian, Dukla, and Magura sub-bas ins and their east ern pro lon ga tion formed part of the rifted Eu ro pean mar gin (Oszczypko and Oszczypko-Clowes, 2003;Golonka et al, 2006).…”