MESOZOIC EVOLUTION OF TATRIC UNITS IN THE MALE-KARPATY AND POVAZSKY-INOVEC MTS - IMPLICATIONS FOR THE POSITION OF THE KLAPE AND RELATED UNITS IN WESTERN SLOVAKIA

The Tatricum is a principal crustal superunit of the outer part of the Central Western Carpathians. It comprises pre-Alpine crystalline base ment and its Late Paleozoic and Mesozoic sedimentary cover. The Mesozo ic sedimentary and structural records indicate stable shelf conditions during the Triassic, Early Jurassic initial rifting event, Middle Jur assic to Early Cretaceous extensional tectonic regime and mid-Cretaceo us flexural subsidence in front of the orogenic wedge prograding from the south The extension created a passive margin along the north Tatri c edge bordering the Vahic (South Penninic) oceanic domain. The passiv e margin was inverted to a convergent one as late as during the Early Senonian The Vahic oceanic crust was then subducted southwards below t he Tatricum. The final collision of the Centrocarpathian thrust stack with the Oravic (Pieniny Klippen Belt) ribbon continent during the lat est Cretaceous resulted in transpression and transtension in this meso -Alpine suture zone. The tectonic scenario described is inconsistent w ith current views on the evolution of the Tatric-Oravic intervening zo nes; therefore an alternative model which considers some Klippen and P eri-Klippen Belt units to be derived from the Central Carpathians, spe cifically from the Fatric (Krizna) domain, is presented and discussed.