Type 1 reefs of ref. 685.
Low growth-ratio reefs.
Reef core coral, coral debris, algal, foram-algal and shelf facies distinguished. 
Reef facies: Coral boundstones and packstones with coral heads up to 30 cm in diameter. Diverse compound corals, hydrozoans, branching corals, red algae (mostly encrusting), forams, echinoid and bivalve debris.
Bioherms including pinnacle reefs.