Tidal Deposits pp 235-242 | Cite as

Tidal Deposits, Dachstein Limestone of the North-Alpine Triassic

  • Alfred G. Fischer


Late Triassic (Norian-Rhaetian) limestones, 1,000 to 1,500 meters thick, consist of interbedded lagoonal limestones (90 percent) and intertidal-supratidal dolomitic limestones (10 percent). The belt was originally some 20 km wide, extending some 250 km from the Loferer and Leoganger Steinberge in the west, through the region of Berchtesgaden and Salzburg, toward Vienna. It is bounded on the south by a belt of reefs defining the southern edge of the Dachstein bank, and on the north by the Hauptdolomit ultrabackreef facies. The deposit is well exposed in the many mountain faces and high plateaus of the region; lower and readily accessible exposures south of Salzburg include cuts and a quarry near Golling (Pass Lueg), and at Berchtesgaden, the road from Obersalzberg to Hitler’s “Eagle’s Nest” on Mt. Kehlstein. Rocks are moderately deformed, with primary porosity lost by cementation.


Tidal Creek Snail Shell Reef Facies Tidal Deposit Dolomite Content 
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  1. Fischer, A. G. 1964. The Lofer cyclothems of the Alpine Triassic. In Merriam, D. F., ed. Symposium on Cyclic Sedimentation. Kansas Geol. Surv. Bull. 169 ,107–149.Google Scholar
  2. Tebbut, G. E., Conley, C. D., and Boyd, D. W. 1965. Lithogenesis of a distinctive carbonate rock fabric. Wyoming Geol. Surv. Contr. Geol. 4 ,1.Google Scholar

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© Springer-Verlag New York Inc. 1975

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  • Alfred G. Fischer

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