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Wyświetlanie 1-4 z 4
Tytuł:
Stratigraphy of the Hieroglyphic Beds with “Black Eocene” facies in the Silesian Nappe (Outer Flysch Carpathians, Poland)
Autorzy:
Waśkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/191339.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Eocene
Outer Carpathians
Hieroglyphic Beds
foraminifera
biostratigraphy
dark shales
Opis:
The lithologic variation and biostratigraphy of the Hieroglyphic Beds were examined in the Szczyrzyc Depression, where four lithologic complexes were distinguished. The biostratigraphy is based on agglutinated foraminifera and supported by scarce planktonic foraminifera. The lower part of the Hieroglyphic Beds contains non-characteristic, Ypresian foraminifers, including assemblages of small-sized Trochammina and at successively higher levels representatives of the Bartonian Ammodiscus latus Zone and the Priabonian Reticulophragmium gerochi Zone. The upper part of the Hieroglyphic Beds, composed of dark shales enriched in TOC (1–2%), corresponds to the deposits of the so-called Black Eocene, known from the Fore-Magura group of nappes. Redeposited flysch rocks resulting from episodes of subaqueous mass flow occur in the lower Bartonian part of the section.
Źródło:
Annales Societatis Geologorum Poloniae; 2015, 85, 2; 321-343
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
1D modelling of hydrocarbon generation and expulsion from Oligocene Menilite source rocks in the San and Stryi rivers region (Polish and Ukrainian Carpathians)
Autorzy:
Kosakowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/2059737.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Menilite Shales
Outer Carpathians
petroleum geochemistry
source rocks
petroleum generation
Opis:
Based on geochemical data of the Oligocene Menilite Shales in the Boryslav–Pokuttya, Skole (Skyba), Silesian (Krosno) and Dukla units in the Carpathians, between Krosno and Styi towns, 1D modelling of generation and expulsion processes of hydrocarbons has been carried out. These strata are characterized by mostly high organic matter content, the total organic carbon (TOC) content reaching up to 26 wt.%. The highest hydrocarbon potential was recorded in the Boryslav–Pokuttya and Skole units. Organic matter in the Skole (Skyba) Unit is immature; in turn, in the Boryslav–Pokuttya, Silesian (Krosno) and Dukla units it is mature enough for generating hydrocarbons. Results of the modelling reveal that during the deposition of flysch in all the above mentioned Outer Carpathian units the Menilite source rocks did not reach a level of thermal maturity high enough to generate hydrocarbons. Conditions of hydrocarbon generation were obtained in the thrusting stage of the Outer Carpathians. In general, the process of hydrocarbon generation began at depths of less than 2 km in the Polish part, and about 4 km in the Ukrainian part. The kerogen transformation level reached from 10% to to complete transformation as in the Suche Rzeki IG 1 well.The results of the modelling of hydrocarbon generation and expulsion from the source rocks of all the units reveal that the highest maturity and the highest generation potential were obtained by the Menilite Shales in the Silesian and Dukla units.
Źródło:
Geological Quarterly; 2013, 57, 2; 307--324
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Materia organiczna rozproszona w ciemnych turbidytach górnego eocenu płaszczowiny śląskiej (Karpaty zewnętrzne, Polska)
Organic matter dispersed in the Upper Eocene dark turbidities of the Silesian Nappe (Outer Carpathians, Poland)
Autorzy:
Waliczek, Marta
Waśkowska, Anna
Machowski, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2076201.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
materia organiczna
refleksyjność witrynitu
ciemne łupki
płaszczowina śląska
Karpaty Zewnętrzne
organic matter
vitrinite reflectance
dark shales
Silesian Nappe
Outer Carpathians
Opis:
In this study, weapply microscopic analysis to evaluate thematurity of organic matter and characterise the macerals dispersed in the Upper Eocene shale samples from the Hieroglyphic Formation (Silesian Nappe, Outer Carpathians). The mean vitrinite reflectance values indicate the presence of organic matter immature to hydrocarbon generation (Ro≈0.43%).The main organic component dispersed in analysed samples is vitrinite, characteristic of kerogen type III.
Źródło:
Przegląd Geologiczny; 2021, 69, 7; 458--462
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-resolution petrography of marls from Goleszów (Polish Outer Carpathians, Upper Jurassic, Vendryně Formation)
Autorzy:
Górniak, K.
Powiązania:
https://bibliotekanauki.pl/articles/2059813.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Outer Carpathians
Jurassic
Lower Cieszyn Shales
Vendryně Formation
olistostrome
olistoliths of marls
dirty chalk facies
petrogenesis
early hardening
FESEM/BS imager
Opis:
In the Ghibaudo (1992) classification, the Upper Jurassic Lower Cieszyn Shales (Vendryně Formation) exposed in Goleszów (southern Poland) show sedimentological features typical of the MyG (muddy gravel beds) facies. Two lithic components of this facies have been petrographically studied: calcareous shales, which are principal constituent of the olistostrome matrix, and the rocks displaying field characteristics of marls, which occur as olistoliths. Two factors controlling the mode of intrabasinal redeposition have been recognized: the primary depositional environment, and the presence of calcareous nannofossils in the original sediments. Because the rocks occurring as olistoliths and those forming the matrix are compositionally similar but differ in grain size and clay abundance, it is reasonable to assume that the matrix rocks were originally deposited in quieter water conditions than the future olistoliths. Despite post-sedimentary modification, FESEM/BS imagery of the marls from the olistoliths reveals coccoliths in their groundmass, which are hold together with calcite overgrowth cement; this feature is eogenetic. Thus, the presence of coccoliths appears to be the crucial factor that made possible early hardening of the sediments and subsequently their redeposition as lithic blocks. This process in the starting sediments for the olistostrome matrix was inhibited by clay. Thus, they remained unconsolidated and were then redeposited as muds.
Źródło:
Geological Quarterly; 2015, 59, 1; 135--144
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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