Tischberg (Upper Bavaria)

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View of the transverse side of the survey at Eurasburg

The Tischberg is a hill in the Bad Tölz-Wolfratshausen district with a maximum height of 717 m above sea ​​level , which rises between the southeastern shore of Lake Starnberg and the Isar valley . The core of the Tischberg consists of conglomerates of the Upper Freshwater Molasse and was created at the end of the Neogene . This rock is particularly exposed in the vicinity of the Garmisch Autobahn 95 and is recognized as a geotope .

During the past when Würm glaciation called Ice Age of the table mountain acted as a barrier to advancing Isar-Loisach glacier . The eastern flank of the large foreland glacier on the Tischberg divided into the eastern main tongue , which carved out the tongue basin of Lake Starnberg, and the smaller tongue, which formed the Isar valley. Its southern tip was not covered by the glacier tongues and protruded from the ice as a nunatak . Behind the crest, the two glacier tongues brought in material that was deposited as lateral moraine on the northern Tischberg .

The area of ​​the Tischberg extends from today's St. Heinrich on the shores of Lake Starnberg to Eurasburg in the Isar Valley, in the south it extends to Faistenberg . To the south of Eurasburg, near Beuerberg on the Isar slope, the rock of the molasse conglomerates is well exposed . On the road between Eurasburg and the castle on the back you can see a superimposition of the Molasse with Nagelfluh from the Mindel glacial period , the Nagelfluh at the highest points of the Tischberg near Happerg is attributed to the Günz glacial period due to its high altitude . The Tischberg continues to the north in the Münsinger Ridge between Lake Starnberg and the Isar Valley, the freshwater molasse is lower here and is covered by gravel from the Würm Ice Age. The freshwater molasse is only reopened on the steep western slope near Allmannshausen .

Geotope

The outcrop on the Tischberg has been designated as a valuable geotope by the Bavarian State Office for the Environment (geotope number: 173A019).

literature

  • Rolf KF Meyer, Hermann Schmidt-Kaler: Walks into the history of the earth - Volume 8: On the trail of the Ice Age south of Munich, eastern part . Pfeil Verlag, 1997. ISBN 3-931516-09-1 , pages 127-137
  • Ludger Feldmann: The geological development of the landscape around Eberfing . In: Luise Hohenleitner: Eberfinger Heimatbuch . Published by the municipality of Eberfing, 1998. Pages 255–263

Individual evidence

  1. ↑ Feldmann
  2. ↑ Meyer, Schmidt-Kaler
  3. ↑ Bavarian State Office for the Environment, Geotop Aufschluss am Tischberg SW of Eurasburg (accessed on October 19, 2017).

Coordinates: 47 ° 50 '  N , 11 ° 23'  E