Sedymentacja cechsztyńska na obszarze Podlasia
Abstract
ZECHSTEIN DEPOSITION IN THE PODLASIE AREA (EASTERN POLAND)
Summary
Stratigraphical (Figs. 1-5) and facies study (Figs. 5 - 8) indicates that the history of Zechstein deposition in the Podlasie area shows many common features with the Peri-Baltic area (13). It was proved that development, facies patterns and relations between extents of particular Zechstein units are strikingly similar in both areas. New paleogeographical reconstruction (Figs. 6 - 8) fundamentally changes the earlier-presented interpretations (1, 3, 21-25) for the PZ2 and PZ3 cycles, and modifies the interpretation of the PZl cycle. In particular, it was found that the present (and original) limit of the Platy Dolomite (Ca3) is considerably larger than the limit of the Main Dolomite (Ca2), what otherwise is a rule (or the Zechstein basin. In the Tłuszcz region where the well net is relatively dense, a striking similarity of tectonic pattern, expressed by the facies of the Rotliegendes, and of limit and facies of particular Zechstein units (Figs. 6 - 8), was recorded. It indicates that in the Podlasie area, like in the Peri-Baltic area (13), a subtle tectonic activity of the basement was an important control on the Zechstein deposition.
Summary
Stratigraphical (Figs. 1-5) and facies study (Figs. 5 - 8) indicates that the history of Zechstein deposition in the Podlasie area shows many common features with the Peri-Baltic area (13). It was proved that development, facies patterns and relations between extents of particular Zechstein units are strikingly similar in both areas. New paleogeographical reconstruction (Figs. 6 - 8) fundamentally changes the earlier-presented interpretations (1, 3, 21-25) for the PZ2 and PZ3 cycles, and modifies the interpretation of the PZl cycle. In particular, it was found that the present (and original) limit of the Platy Dolomite (Ca3) is considerably larger than the limit of the Main Dolomite (Ca2), what otherwise is a rule (or the Zechstein basin. In the Tłuszcz region where the well net is relatively dense, a striking similarity of tectonic pattern, expressed by the facies of the Rotliegendes, and of limit and facies of particular Zechstein units (Figs. 6 - 8), was recorded. It indicates that in the Podlasie area, like in the Peri-Baltic area (13), a subtle tectonic activity of the basement was an important control on the Zechstein deposition.