Age and provenance of mica-schist pebbles from the Eocene conglomerates of the Tylicz and Krynica Zone (Magura Nappe, Outer Flysch Carpathians)

Abstract

During the Łate Cretaceous to Palaeogene, the Magura Basin was supplied by clastic material from source areas situated on the northern and southern margins of the basin, which do not outcrop on the surface at present. The northern source area is traditionally connected with the Silesian Ridge, whereas the position of the southern one is still under discussion. A source area situated SE of the Magura Basin supplied the Eocene pebbly para-conglomerates containing partly exotic material. The studied clastic material contains fragments of crystalline rocks, and frequent clasts of Mesozoic to Palaeogene deep and shallow-water limestones. Numerous mica schists, scarce volcanites and granitoids as well as gneisses, quartzites and cataclasites were found in the group of crystalline exotic pebbles. Monazite ages of “exotic” mica-schist pebbles from the Tylicz, Zarzecze and Piwniczna-Mniszek sections document the Variscan 310±10 Ma age of metamorphic processes. The provenance of these exotic rocks could be connected with a remote source area located SE of the Magura Basin, which could be the NW part of the Dacia Mega Unit. The idea is strongly supported by palaeotransport directions from the SE, the absence of material derived from the Pieniny Klippen Belt, the presence of shallow water limestones, typical facies of the Median Dacides belt and metamorphic age distribution proved by monazite dating.

Heavy minerals and exotic pebbles from the Eocene flysch deposits of the Magura Nappe (Outer Western Carpathians, eastern Slovakia): their composition and implications on the provenance

“…Significant for the Strihovce conglomerates are red orthogneisses (Marschalko et al, 1976). In the Eocene deposits of an equivalent formation (the Piwniczna Sandstone Member of the Magura Formation and Tylicz/Krynica facies, Olszewska and Oszczypko, 2010) in Poland were found granitoids, gneisses, mica schists, phyllites, quartzites, and a small amount of basic volcanic rocks and Mesozoic carbonates (Oszczypko, 1975;Oszczypko et al, , 2016. Analyses of heavy mineral suites from the Strihovce Fm.…”

Cadomian protolith ages of exotic mega blocks from Bugaj and Andrychów (Western outer Carpathians, Poland) and their palaeogeographic significance

“…Burtanówna et al, 1937;Wieser, 1948), interpreted to be derived from uplifted ridges (cordilleras, Książkiewicz, 1953) and transported by turbidity currents and debris flows into the adjoining flysch basins, offer the opportunity to investigate the geotectonic history of these no longer existing provenance areas of the Carpathian flysch (e.g. Wieser, 1949Wieser, , 1985Książkiewicz, 1965;Oszczypko, 1975;Malik, 1978;Oszczypko et al, 2016).…”

“…A number of studies concerning the palaeogeography of the WOC have used a range of geochronological methods including K-Ar mica dating (Poprawa et al, 2004(Poprawa et al, , 2005Haber and Hałas, 2001), Th-U-total Pb monazite dating (Hanžl et al, 2000;Budzyń et al, 2008;Salata and Oszczypko, 2010;Oszczypko et al, 2016) and U-Pb zircon geochronology (Michalik et al, 2006;Budzyń et al, 2011) to constrain the timing of magmatic and metamorphic processes recorded in the exotics. The general outcome of these investigations is that numerous exclusively pre-Alpine, in parts pre-Variscan ages were determined, but no obvious correlation of stratigraphic and tectonic position and/or geography emerged.…”

Therapeutic Water in the Poprad Valley – the Newest Development in the Polish Outer Carpathians

“…The occurrence of carbonated waters and waters containing carbon dioxide in this area have greatly contributed to tourist development of such renowned health resorts as Krynica-Zdrój, Muszyna, Piwniczna, and Żegiestów. The region is rich in natural mineral water springs that are confined to a tectonic block bounded by the Tylicz and Krynica faults [1]. At present, a number of commonly available sources of waters and health resort well-rooms are functioning, along with drilling boreholes producing therapeutic waters for several bottling plants.…”