Budowa geologiczna strefy brzegowej zbiornika retencyjnego na Rabie w Dobczycach

Abstract

The reservoir is situated in the eastern part of the silesian unit, between magura and sub-silesian unit. It shows greet lithofacies variations. It is built mainly of Cretaceous deposits like: lgockie layers, transit layers, godulskie beds, spotted shales and istebniartskie layers. In the upper part of the unit there are Paleogene deposits: Ciężkowice sandstones, spotted shales, hierogliphic layers, menilitic shales and krośnieńskie layers. Paleogene deposits are covered with Quaternary clays and fluvial and fluviglacial deposits from Cracow middle Poland and Baltic ice ages (tab. 1). There are 3 tectonic structures: 2 depressions separated with a elevation. They are: Polanka-Siepraw Basin in istebniartskie layers and Paleogene deposits in its centre. Dobczyce elevation with godulskie layers in the centre and Kornatka-Siepraw Basin in upper istebniartskie deposits. These structure are included into greater unit which together with Lanckorona Pogórze are main tectonical, structures of the marginal part of the silesian unit.