Eichsfeld threshold
The Eichsfeld-Schwelle is the southern part of the paleogeographical uplift area of the Eichsfeld-Altmark-Schwelle between the Thuringian Basin in the east and the Hessian Basin in the west, south of the Harz Mountains as far as west Thuringia .
The uplift structure on the western edge of the Thuringian Basin , which strikes in the NNE-SSW, was created over 250 million years ago during the Upper Palaeozoic and the subsequent Triassic period and was repeatedly effective as an area of erosion and shallow water. The threshold was between 10 and 20 kilometers wide and towered over the surrounding terrain by several hundred meters.
The Eichsfeld threshold in the southern Harz region
The region south of the Harz between Bad Lauterberg and Bad Sachsa occupies a special section . Large parts of Central Europe were flooded in the time of the Zechstein . The threshold between the Thuringian Basin and the Weser Basin became a shallow zone with numerous islands and the formation of reefs . Remains of these geological structures can still be seen today as rock formations:
- Eulenstein (approx. 410 m) near Osterhagen
- Westersteine (385 m) between Barbis and Bartolfelde
- Römerstein (345 m) near Steina.
Since the formation of the mainland, the Eichsfeld (Upper Harz) threshold has remained a high altitude and has since formed the Elbe-Weser watershed between the catchment areas of the Helme - Unstrut and the Oder - Rhume . In addition, it formed the border between the Thuringian and Saxon territorial areas and the Central German-Thuringian and Low German dialect. Climatically, it lies in the transition area from the Atlantic to the continental climate area.
Individual evidence
- ^ Dietrich Franke: Regional Geologie in Ostdeutschland-A dictionary 2011 Regionalgeologie Ost