Bonndorfer Graben
The Bonndorfer Graben is a southeast-northwest to east-west trending tectonic rift system on the eastern edge of the Black Forest and in the Baar between Bonndorf in the Black Forest (in the south) and Donaueschingen (in the north). The upper reaches of the Wutach flow through it; Variscan ( Paleozoic ) laid out, it was reactivated in the Tertiary ; it penetrates basement and overburden . The continuation of the Bonndorfer Graben can be traced across the Black Forest with the Lenzkircher Graben near Lenzkirch , the Höllental and the Freiburg Bay to the Upper Rhine Graben at the Kaiserstuhl , to the east via Blumberg, here visible from the Riedöschinger Travertine and the Blue Stone , in the direction of Engen in the Hegau with the volcanic formations Hohenstoffeln , Hohenkrähen , Hohentwiel , Höwenegg , Hohenhewen and Neuhewen , Mägdeberg , Hohenkrähen, Staufen and Rosenegg to Lake Constance . Due to the subsidence in the Bonndorfer Graben, the Jura of the Swabian Alb and the older layers of the overburden ( red sandstone , shell limestone , Keuper ) protrude to the west.
literature
- Friedrich Spiegelhalter , The tectonics in the uppermost part of the Bonndorfer Graben , inaugural dissertation, C. Winter 1912
- Serge von Bubnoff , The Hercynian Breaks in the Black Forest, their relationship to carbonic folding and their posthumidity , Stuttgart, Schweizerbart 1921 (Phil. Hab.-Schr.) Also as a special print in: New Yearbook for Mineralogy , Supplement Volume 45.
- Hans Schneider, On young crust movements in the pre-Alpine landscape between the southern Rhine rift and Lake Constance , In: Mitteilungen der Naturforschenden Gesellschaft Schaffhausen , 1973 and 1975
- Martin Georg Schäfer, The Devonian sediments of the southern Black Forest main movement zone ( Böllen- Lenzkirch) . Published as volume 8 of the work from the Geological-Paleontological Institute of the Technical University of Stuttgart , 1957
- Rudolf Metz : Geological regional studies of the Hotzenwald , 1987 ISBN 3-7946-0174-2