It comprises mudstones interbedded with thin–medium-bedded bioclastic limestones, with abundant coral and sponge fragments, and plentiful bivalves. These grade upwards into massive reef facies that consist of coral-sponge rudstones in the lower part and platy coral reef limestones in the upper part. The reefs comprise thick biostromes. The bedded
carbonates consist of lagoonal bioclastic and micritic limestones that grade upward into gastropod and oncoidal limestones.