Cechy szczególne polskiej części basenu środkowoeuropejskiego

Abstract

SPECIFIC FEATURES OF THE POLISH PART OF THE CENTRAL EUROPEAN BASIN Summary In South-Eastern Poland, the Central European basin (9, 14, 15, 16) is not bordered by epigeosynclinal Variscides, but by the Carpathian fold belt; in the Mesozoic, connection had been established intermittently between that basin and the Carpathian Tethys. Sedimentary material was delivered to the Polish part of the Central European basin from large areas (the East European platform, the substrate of the Carpathian flysch, the Bohemian massif). In the Polish Lowland, there meet the axis of several subsiding tectonic units (the Central-European basin, the Danish-Polish furrow, the Podlasie depression, the peri-Baltic syneclise). In consequence, there occur in Poland extensive carbonate sediments of the Upper Jurassic sponge facies; there is a large proportion of sands in the Jurassic and Cretaceous sections (particularly in the Lower Jurassic and upper Lower Cretaceous); and a depocenter persisted in the region of Kujawy and Pomerania from the Late Permian till the end of the Cretaceous time. The tectonic development of the Polish part of the Central European basin was largely controlled by tectonic lines parallel to the Teisseyre-Tornquist line extending NW-SE. During the Late Jurassic and Early Cretaceous, the differentiated vertical tectonic movements were not so strong in Poland as in the western parts of the Central European basin. In general, there was not such a marked contrast between the Mid-Polish aulacogene and its borders as it is the case with the Viking Graben and Central Graben of the North Sea (14-16), the grabens in the Netherlands (5) and the Lower Saxony Basin (1). With the exeption of some intermittent periods, the Mid-Polish aulacogene developed as a axial, fault-accentuated part of the broader Danish-Polish furrow syneclise).