These biostromes and bioherms, together with tidal-flat dolomicrite and muddy dolostone, form circum-tidal flat meter-scale carbonate cyclic sequences with symmetrical facies sequences and fabrics.

• 它们与潮坪相泥晶白云岩和泥质白云岩构成具对称相序组构的环潮坪型碳酸盐米级旋回层序。