Petrograficzna charakterystyka osadów czerwonego spągowca rejonu Lwówka Śląskiego ze szczególnym uwzględnieniem roli materiału piroklastycznego.
Abstract
The petrographic characteristics of the Rotliegendes deposits in the Lwówek Śląski region with particular regard to the role of the pyroclastic material
Abstract:
The alimentary areas and the influences of the volcanic activity on the Rotliegendes deposits are here determined. It has been observed that the detrital material comes from the Kaczawa and the Góry Izerskie and that the scattered volcanic material occurs throughout the Lower Rotliegendes. The pyroclastic material is a result of the relatively longlasting volcanism, acid in character, interrupted by a short period of very strong volcanic activity basic in character. The acid pyroclastic material differs in the particular diastrophic sedimentary cycles and this may be of some lithostratigraphic significance.