Thermal Maturity of the Grajcarek Unit (Pieniny Klippen Belt): Insights for the Burial History of a Major Tectonic Boundary of the Western Carpathians

The Grajcarek Unit of the Pieniny Klippen Belt (PKB), at boundary between Central (Inner) and Outer Carpathians, resulted from convergence ALCAPA (the Alps–Carpathians–Pannonia) block European plate. strongly deformed slices consist Jurassic–Cretaceous sedimentary rocks associated with Late Cretaceous–Middle Palaeocene synorogenic wild-flysch, breccias olistoliths. Maximum burial temperatures depths were estimated based on vitrinite reflectance data. values wide scattered through succession, especially in flysch formations. This is attributed mainly to depositional effects that affected evolution. determined maximum interpreted due regional compression controlled by tectonic coeval thrusting strike-slip faulting. variations might estimate cumulative displacement around NNW–SSE oriented Dunajec fault, which a continuation deep fracture Kraków–Myszków fault zone.