Aleksandra Hołda-Michalska

Petrographic and mineralogical characteristics of diagenetic overprinting in Neoproterozoic diamictites from Murchisonfjorden, Nordaustlandet, Svalbard

Szczepan Bal, Krzysztof Nejbert, Krzysztof Michalski, Justyna Domańska−Siuda et autres

Abstract The diagenetic processes exhibited by the Neoproterozoic diamictites from Murchisonfjorden (Nordaustlandet, NE Svalbard) are presented. Diamictite samples from the Cryogene Polarisbreen Group - the Petrovbreen Member of the Elbobreen Formation and the Wilsonbreen Formation were analysed. The mineralogical associations composed of …

pl, gb, cz (code pays fourni par la source)

Summary of a decade of research at the Owadów–Brzezinki Lagerstätte (Tithonian, central Poland): A review and perspectives for the future

Błażej Błżejowski, Łukasz Weryński, Andrzej Wierzbowski, Monika Michalska et autres

For over ten years, the Lower to Upper Tithonian boundary beds cropping out in the Owadów–Brzezinki quarry have yielded numerous fossils of ammonites, bivalves, brachiopods, xiphosurans, decapods, insects, and vertebrates – including actinopterygian fishes and various reptiles and others, all of which …

pl (code pays fourni par la source)

New palaeomagnetic data from tillites of Neoproterozoic Polarisbreen Group, Nordaustlandet, Svalbard

Szczepan Bal, Krzysztof Michalski, Geoffrey M. Manby, Krzysztof Nejbert et autres

New demagnetization results of 53 independently oriented palaeomagnetic samples (145 specimens) of diamictite-rich units from 8 sites collected from the Neoproterozoic sequence of Murchisonfjord, Western Nordaustlandet are presented. The palaeomagnetic samples were obtained from 2 distinct stratigraphical units of Polarisbreen Group: Petrovbreen …

pl, gb, se (code pays fourni par la source)

Polar Symposium-bis. Book of Abstracts. Sopot-Warszawa-Sosnowiec-Lublin. 2023

Elżbieta Łepkowska, Aleksandra Hołda-Michalska, Piotr Zagórski

Łepkowska E., Hołda-Michalska A., Zagórski P. (eds.), 2023: Polar Symposium-bis. Book of Abstracts. Sopot-Warszawa-Sosnowiec-Lublin. The Polar Symposium is a cyclical, biennial scientific meeting dedicated to polar issues. For years, it has served as a natural platform for exchanging experiences, fostering integration, and …

pl (code pays fourni par la source)

Rhaetian/Hettangian palynomorphs of the Tatra Mountains (West Carpathians)

Andrzej Gaździcki, M. Waksmundzka, Aleksandra Hołda-Michalska

Schellwienia arctica [Fusulinidae] from the Carboniferous-?Permian strata of the Treskelodden Formation, south Spitsbergen

Błażej Błażejowski, Aleksandra Hołda-Michalska, Krzysztof Michalski

The fusulinid foraminifers of Schellwienia arctica (Schellwien, 1908) have been investigated from Polakkfjellet Mt., south Spitsbergen, and used as biostratigraphic marker for the latest Carboniferous-?earliest Permian strata of the Treskelodden Formation. A se− ries of thin sections enable to investigate the internal …