Carbonate (bioclastic) debris, microbialites and microencrusters, and reef-building organisms (mainly corals and stromatoporoids).
Microframework -rich(microbialites and microencrusters) facies, with abundant skeletal organismus in place. Corals dominate, followed by stromatoporoids, bivalves (including Rudist diceratids), gastropods (including nerineids), echinoid spines.