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EN
Quartzitic sandstone was distinguished at the lower part of the Kopieniec Formation from the Lower Subtatric Nappe (Kriżna Nappe; Fatricum) between the Bystra Valley and the Olczyska Valley, in the Tatra Mts. In previous editions of the detail geological maps of the Tatra Mts, this sandstone was not marked in this area. The quartzitic sandstone crops out at Wysokie hill, east of Kuźnice and can be easily recognized in the field. The sandstone is located above the series of the dark-grey organodetrital limestones and the black calcareous sandstones of the Fatra Formation (Rhaetian) and below the typical brownish- gray claystone of the Kopieniec Formation (Hettangian). Maximum thickness of quartzitic sandstone is about 15 m.
EN
Trace fossils of the Olenekian clastic deposits (Fatricum domain) in the Tatra Mts. include Rhizocorallium isp., Palaeophycus striatus, cf. Palaeophycus isp. and cf. Chondrites isp., while Planolites isp., Thalassinoides isp., Rhizocorallium isp. and Balanoglossites isp. occur in the Anisian carbonates. The Anisian trace fossil assemblage is less diverse and abundant than in the coeval carbonates of the Tatricum domain. Both, the Olenekian and Anisian trace fossils represent the impoverished Cruziana ichnofacies influenced by the increased salinity. Bioturbational structures are much less abundant than in the Anisian of the Tatricum. They are partly obliterated by diagenetic processes.
EN
The lower-middle Upper Triassic succession of the Fatricum domain from the Tatra Mts is commonly called the Carpathian Keuper. During Late Triassic, the Fatricum Basin was a proximal part of the central Inner Carpathian Basin. In early Carnian times, carbonate sedimentation stopped. Emersion of the Middle Triassic carbonate platform resulted in development of palaeokarst and pedogenic fabrics and deposition of conglomerates. Typical Carpathian Keuper sediments – variegated shales with intercalations of sandstones and dolomites represent mixed continental/shallow marine environments. Variegated mudstones with pedogenic carbonate concretions and intercalations of thin sandstone beds originated in mudflat environment under the semi-arid climate condition. Thick-bedded, cross-stratified sandstones with common plant debris represent fluvial deposits. They were deposited during the periods of climate pluvialisation. According to ?13C and ?18O data, thick, continuous dolomitic sediments containing local cherts represent marine sediments of perilittoral environments, which were commonly emerged as evidenced by common palaeokarst and palaeosols featuring these complexes. Cyclicity in the lower part of the Carpathian Keuper resulted from climatic changes, whereas dolomite-clastic cycles from the upper part of the succession were generated probably by sea level fluctuations. Moreover, deposition of the Keuper succession was controlled by synsedimentary tectonic which resulted in big facies variability.
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