Upper Jurassic to Lower Cretaceous Dasycladales of the Northern Calcareous Alps: the state of knowledge
Lithostratigraphy and Facies
Calcareous Algae are known from the following units: The Plassen Limestone (equivalent with the Lerchkogel Limestone) is typical for a lagoonal development with patch-reefs. The detrital Tressenstein Limestone represents proximal platform debris and is intercalated with the allodapic Barmstein Limestone. The Barmstein Limestone is interpreted as a seismoturbidite facies and represents allodapic sediments, which are intercalated with the well bedded hemipelagic Oberalm Beds.
The platform or platform-derived carbonates are characterized by a rich algal flora. The Chlorophyta are dominated by the Dasycladales, while Siphonales and Charales are of subordinated importance. Additionally, the family Solenoporaceae is dominant among the Rhodophyta.
3. Lithostratigraphy and Facies