Leaders: S. Leszczyński and M. Warchoł
Fee: 130 €
This field trip will visit the late Eocene (Priabonian) to early Oligocene (Rupelian) sedimentary succession in several sections in the central part of Beskid Niski mountain range and in one section in Pogórze Rożnowskie foothills (Outer Carpathians, 100 to 180 km southeast of Krakow). The succession in the first mentioned area is up to 1400 m thick, dominated by thick-bedded, siliciclastic turbidites with significant admixture of other gravity flow deposits (Magura Beds). It was deposited in oxic conditions, in a trough-type, deep-sea, confined basin (outer part of Magura Basin, inner sector of the Carpathian Flysch Sea) bounded by frontal parts of gradually progressing accretionary wedge and by intrabasinal ridge (Silesian ridge). Its deposition resulted from popping-up of the ridge, steered by the accretionary wedge progression. The succession in the second area is only several tens of metres thick, dominated with different deep-sea, fine-grained deposits. In the Rupelian, black-shale facies prevails, with some cherts and siliceous marlstones (Menilitic Beds). Lithostratigraphy of the succession is here typical for the whole remaining outer zone of the Outer Carpathians. It was deposited in the outer part of the Carpathian Flysch Sea, that was not affected yet by the accretionary wedge development. Sedimentation was controlled here similarly like along the major part of the northern margin of the European Alpine orogenic belt. In contrast to the Magura Basin, extensive anoxia occurred here in the Rupelian.
The outcrops are located in beds and banks of charming stream channels, in a tor and a several tens of metres long erosion scarp. Detailed observations of sedimentary fabrics and facies arrangement will be possible. Lithostratigraphic correlation of outcrop sections in the visited part of the Beskid Niski will indicate architecture of the sedimentary succession and its depositional system.
Kraków - Brzesko - Gorlice - Siary - Ropica Górna - Małastów - Folusz - Mrukowa - Znamirowice - Brzesko - Kraków
The outcrops are easily accessible, however, mainly in rubber boots. At this time of the year, the weather is rather unstable. Average temperatures range from 17°C to 18°C. Rains and storms are possible. Look to the weather forcast: http://www.weatheronline.co.uk/Poland.htm (select Nowy Sacz).