Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Reinterpretation of geological and geophysical data from the Mšeno-Roudnice Basin
Abstract
The Mšeno-Roudnice Basin, one of the Central Bohemian Carboniferous Basins, is covered by up to 300 m thick Late Cretaceous sediments. The Carboniferous rocks (Westphalian B/C to Stephanian C) consist of four main litostratigraphic units: Kladno, Týnec, Slaný and Líně formations. the Basin was explored mainly by deep boreholes drilled down to the crystalline basement. Geophysical data were obtained by well-logging and a grid of seismic lines. Interesting ancient valleys of Carboniferous age have beendetected in seismic CMP sections, first at the Stephanian B/C boundary, corresponding to the well-known hiatus between Slaný and Líně formations, later at other stratigraphic levels. In two cases fossil stream patterns could be reconstructed, causing the deep erosion of the upper part of the Slaný Formation and the lower part of the Líně Formation. Final considering of results proved the repetition of comparatively rapid vertical movements and lasting subsidence of the central part of the Mšeno-Roudnice Basin.
