Abstract
In the Polish sector of the Magura Nappe, along the front of the Pieniny Klippen Belt, strongly tectonized calcareous flysch up to 1000 m thick is exposed. Previously these deposits, composed of thin- to thick-bedded flysch, with a packet of Łącko-type marls, have been included into several Paleocene/Eocene formations, e.g., the Szczawnica Formation. This formation contains a poor assemblage of agglutinated foraminifera and a relatively rich assemblage of calcareous nannoplankton, with abundant reworked species. The youngest species give evidence of the NN2 Zone (Lower Miocene). Additionally, in three profiles (Szlachtowa, Knurow and Waksmund) of the Kremna Fm., Early Miocene foraminifera have been recognized. This research documented that during the Burdigalian, at the front of Central Western Carpathians, there still existed a residual marine basin probably up to 100 km wide. These deposits also contain thick packages of exotic carbonate conglomerates derived from the SE, previously regarded as the Jarmuta Formation.
Highlights
Since the second half of the last century, there has been a dominant view that the closure of sedimentation in the Magura Paleogene Basin progressed gradually from the Middle Eocene in the Krynica facies zone, in the south, to the Early Oligocene in the Siary facies zone in the north (Sikora andytko,1960; Wêc3awik, 1969; Sikora, 1970; Ksi1¿kiewicz, 1972, 1977; Birkenmajer and Oszczypko, 1989)
In subsequent publications (Oszczypko and Oszczypko-Clowes, 2010, 2014) these Oligocene/Miocene deposits have been described as the Kremna Fm. at Stara 1⁄4ubovòa (Slovakia) and in the Ma3e (Little) Pieniny Mts. (Poland)
This study focuses on the area between Jaworki (E) and Nowy Targ (W), as crucial the understanding the relationship between the Magura Nappe, the Pieniny Klippen Belt (PKB) and the Central Western Carpathians (CWC)
Summary
Since the second half of the last century, there has been a dominant view that the closure of sedimentation in the Magura Paleogene Basin progressed gradually from the Middle Eocene in the Krynica facies zone, in the south, to the Early Oligocene in the Siary facies zone in the north (Sikora andytko,1960; Wêc3awik, 1969; Sikora, 1970; Ksi1¿kiewicz, 1972, 1977; Birkenmajer and Oszczypko, 1989) This point of the view has been partially modified following the discovery of the Oligocene Malcov Formation (Fm.) above the Magura Sandstone Fm. in the Nowy S1cz and Nowy Targ areas by Oszczypko (1973) and Cieszkowski and Olszewska (1986), respectively. This study focuses on the area between Jaworki (E) and Nowy Targ (W), as crucial the understanding the relationship between the Magura Nappe, the PKB and the Central Western Carpathians (CWC) Keeping this in mind we re-evaluate existing as well as new geological and biostratigraphical data of the Oligocene/Miocene deposits at the front of the PKB. This is important for better understanding of the palaeogeography and relationships between the CWC, PKB and Magura Nappe before the Early/Middle Miocene shortening of the Outer Western Carpathians (OWC)
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