Gosau Glacier

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In the literature, the term Gosau Glacier is used for the late glacial glacier levels up to the transition to the postglacial around 10,000 years ago. Characteristic is the continuous glaciation of the Great Gosau Glacier with the Torstein Glacier ( Kleiner Gosau Glacier , Northern and Southern Torstein Glacier ).

Historical glacier stands and research

Reconstruction of the possible expansion of the Gosau glacier at the time of the Daunstadium.

After the disintegration of the inner alpine ice flow network , independent valley glaciers formed; interim periods of advance or longer glacier stops can be assigned to equivalent stages based on the deposits. In the Gosau valley , according to D. van Husen, pronounced lateral moraines on both sides of the mouth of the Bärnbach indicate an already isolated position of the Gosau glacier, which is comparable to the Jochwand stand (named after 16,000 to 17,000 year old sediments below the Jochwand west of Bad Goisern in the Traun valley ). These moraines would show that the glacier reached the entrance to the narrow valley.

End moraines near the Vorderen Gosausee , which are associated with the Gschnitz Stadium or the Goiserer stand on the Hallstatt side, are described several times in the literature .

There are different interpretations of the size of the Gosau glacier at the Daunstadium around 12,000 years ago today, but the view that the former glacier tongue ended in the steep step to the Hinteren Gosau lake below the ruined coarse rock hut between 1400 and 1600 m is well defensible . The Echernstand is seen as an equivalent on the Hallstatt side.

R. Moser suspects that the Egesenstand is at the glacier tongue at an altitude of around 1700 m below the Kreidenbach depth. Egesenwalls would be visible between the Hohen Riedel and the Adamekhütte parallel below the ascent path, and the Adamekhütte itself would also lie on an Egesenmöräne. The Great Gosau Glacier was still connected with the Torstein Glacier and is said to have made up around ⅔ of the area of ​​the Daun Glacier.

The separation of the Great Gosau Glacier from the Torstein Glacier is due to the rapid rise in temperature around 10,000 years ago and the leveling off of glacier sizes at (early) recent values. The term "Torsteingletscher" is still used in 1885 by Friedrich Simony . As the glaciers continued to retreat into the individual Karwannen, the Kleine Gosaugletscher and the northern and southern Torstein glaciers also became isolated.

source

literature

  • Erik Arnberger , Erwin Wilthum: The glaciers of the Dachsteinstock in the past and present I. In: Yearbook of the Upper Austrian Museum Association. Volume 97, Linz 1952, pp. 181-214, online (PDF) in the forum OoeGeschichte.at.
  • Erik Arnberger, Erwin Wilthum: The glaciers of the Dachsteinstock in the past and present II. In: Yearbook of the Upper Austrian Museum Association. Volume 98, Linz 1953, pp. 187-217, online (PDF) in the forum OoeGeschichte.at.
  • Hans Kinzl : Contributions to the history of the glacier fluctuations in the Eastern Alps. Z. f. Gletscherkunde Volume 17, Issue 1–3, 1929, pp. 66–121.
  • Roman Moser: The glaciation in the Dachstein and its traces in advance. Dissertation at the Geographical Institute of the University of Innsbruck, 1954.
  • Roman Moser: Dachstein Glacier and its traces in advance. Musealverein Hallstatt (Ed.), Hallstatt 1997, 143 pages.
  • Friedrich Simony: The Dachstein area. A geographical character image from the Austrian Northern Alps. E. Hölzl, Vienna 1895, 152 pages.
  • Dirk van Husen: On the facies and stratigraphy of the Young Pleistocene deposits in the Traun Valley. In: Yearbook of the Federal Geological Institute. Volume 120, Issue 1, Vienna 1977, pp. 1–130.

Individual evidence

  1. ^ Van Husen, D., 1977: 60
  2. ↑ Penck, A., Brückner, E., 1909: 368
  3. ↑ Wilthum, E., 1953: 196
  4. ^ Moser, R., 1954: 37
  5. ↑ van Husen, D., 1977: 73/74
  6. ^ Moser, R., 1954: 41
  7. ↑ Wilthum, E., 1953: 196
  8. ↑ van Husen, D., 1977
  9. ^ Moser, R., 1954: 46
  10. ^ Moser, R., 1997: p. 128f: Explanations for the glacier map
  11. ^ Moser, R., 1954: 46
  12. ↑ Simony, Fr., 1895: 139