Paleozoic Poland

Tornquist Margin, Sorgenfrei–Tornquist (North) and Teisseyre–Tornquist (South), separates the Baltic Shield and Eastern European Platform from the North-West European Craton.

The Rotliegend, Rotliegend Group or Rotliegendes () is a lithostratigraphic unit (a sequence of rock strata) of latest Carboniferous to Guadalupian (middle Permian) age that is found in the subsurface of large areas in western and central Europe. The Rotliegend mainly consists of sandstone layers. It is usually covered by the Zechstein and lies on top of regionally different formations of late Carboniferous age.