Up to 40 m thick, 120 m wide. Up to 500 m thick according to ref. 1420.
Late Wenlockian microbial mound (70 m) and Ludlovian framework with tabulate and branching rugose corals, stromatoporoids, bryozoans and microbes).
Diverse stromatolite forming calcified microbes:
Epiphyton, Girvanella, Wetheredella, Rothpletzella, Hecetaphyton ...
Only abundant metazoan are aphrosalpingid sphinctozoan sponges.
High energy platform margin setting.
Ref. 2268: This reef shed vast amounts of allochthonous sediments to the adjacent submarine slope