Atoll-like reef. 80 m thick.
Stromatopores predominate by far (hemispheripcal, tabular and branching).
Amphipora and encrusting green algae are present.

3 Stromatoporoids - Amphipora - Stromatoporoids
2 Table reef
1 Amphipora beds

This for Givetian part
7.8 % avg. porosity.