Powstanie i rozwój polskiej części zapadliska przedkarpackiego

Abstract

Development of the Polish sector of the Carpathian Foredeep.Summary. The Early to Middle Miocene Carpathian Foredeep in Poland developed as a peripheral foreland basin related to the moving Carpathian front. The important driving force of tectonic subsidence in the PCF was emplacement of the nappe load related to the subduction roll-back. During that time the loading effect of the thickening of the Carpathian wedge on the foreland plate increased and was followed by the progressive acceleration of total subsidence. The Miocene convergence of the Carpathian wedge resulted in the migration of depocenters and onlap of the successively younger deposits onto the foreland plate.The foreland basin was supplied by clastics derived both from the Carpathian orogen as well as from the foreland platform. During the Early Miocene the rates of subsidence and sedimentation were more or less balanced, whereas in the Middle Miocene subsidence was higher, what resulted in marine sedimentary conditions.