Formacje metalogeniczne w utworach permskich na obszarach platformowych Europy

Abstract

METALLOGENIC FORMATIONS IN THE PERMIAN OF THE EUROPEAN PLATFORM AREASSummaryTwo significant metallogenic formations occur in the Permian of the European platform cover, the first being the copper-bearing the other the saliferous formation. In the East European platform they occur in the Lower and Upper Permian while in the West and Middle European platform they are confined to the Upper Permian sediments (Figs. 1 and 2). The copper-bearing formations. The Lower Permian copper-bearing formation is in the Donbas area. The copper mineralization is associated with variegated littoral sediments that form the basal part of the Lower Permian (the Assel stage). The Upper Permian copper-bearing formation is found in the foreland of the Middle and South Urals (USSR) and in Middle Europe (Poland, German Democratic Republic). In the Urals foreland the mineralization is related to the red sandstone-carbonate horizon (the Ufimian, Kazanian, and Tatarian stages) - (Fig. 3). In Middle Europe the copper-bearing beds are in the Lower Zechstein (Z1 Werra cyclothem) of the Fore-Sudetic monocline, in the North Sudetic trough, and in the Thuringian trough. The saliferous formations. The Lower Permian saline series occur in the north-western part of the Donbas (the Assel stage). In addition to rock salt two potash horizons have been encountered. The lower one is a sylvinite horizon, the upper one is sylvinite-carnallite. In the eastern part of the East European platform the Lower Permian salt-bearing series occur in the Uralian foredeep and in the Peri-Caspian syneclise (Figs. 1 and 6). Besides the big rock salt basins with potash beds of the Upper Pechora, Upper Kama, and Caspian areas are of major significance. The Upper Permian saliferous formation is wide-spread in West and Middle Europe where salts occur in four cyclothems: (Zl) Werra, (Z2) Stassfurt, (Z3) Leine, and (Z4) Aller. The following salt-bearing basins can be distinguished from the east westwards: the Polish-Lithuanian, Middle Polish, Main German, Hessen Thuringia, Lower Rhine, Danish, and the East English basin (Fig. 10).