Flint line
red line = ice edge position of the Vistula glaciation ;
yellow line = ice edge of the Saale glaciation ;
blue line = ice edge of the Elster glaciation
The course of the flint line marks the maximum glacier advances of the Fennoskand Ice Sheet to the south of the last three ice ages in the north German lowlands . In Central Germany it is the southern border of the Elster-Cold Age glacier, in northwest Germany that of the Saale-Cold Age glaciation.
Surname
It takes its name from the numerous flint deposits . Since terminal moraines from the Elster glaciation have not been preserved, it is the only indication of their maximum ice extent. Flint originally did not occur in large areas of Germany, but was eroded by the Scandinavian inland ice from sediments of the Cretaceous period (for example on the island of Rügen ) and distributed over the area of the glaciation. It is also the southernmost region where erratic boulders from Scandinavia were found.
course
The flint line runs from the North Sea north of the Teutoburg Forest and the Harz Mountains and then follows the cities of Wernigerode , Blankenburg , Friedrichsbrunn , Stolberg , Uftrungen , Nordhausen , Sondershausen , Mühlhausen , Bad Langensalza , Gotha , Erfurt , Weimar , Jena from west to east. Lobeda , Stadtroda , Weida , Zwickau , Chemnitz , Hainichen , Roßwein , Siebenlehn , Freital , Weesenstein , Bad Schandau and Oybin . At the instigation of geologist Otfried Wagenbreth, a total of thirteen identical “Ice Age memorial stones ” made of Lusatian granite were set up in the places in italics , on which the outline of the GDR including the course of the flint line was depicted on a metal plate .
Source
- ^ Otfried Wagenbreth , Walter Steiner : Geologische Streifzüge. Landscape and geological history between Cape Arkona and Fichtelberg. 4th, unchanged edition. German publishing house for basic industry, Leipzig 1990, ISBN 3-342-00227-1 , p. 27.