Reefs 1, 2 of ref. 1104.
Phase 1 mud mound cored pinnacle reefs.
All reefs of phase 1 have 300-400 m minimum thickness and a width of 300-1000 m.
Coral-microbial boundstone overlain by oolite.
Tabulate corals>rugose corals>algae (Solenopora, Pseudochaetetes), stromatopores and lithistid sponges.
Renalcis and other microbes very abundant.
Reefs formed basinward of platform margin.
Reef apron about 1 km around pinnacles. Olistolites up to 15 m in diameter.