(a) Detailed photograph of a carbonate lens in the sub-site R (see Fig. 5 for location) displaying densely packed 5 to 8 cm wide lucinid specimens encased in a nodules-rich micritic matrix. (b) Detailed photograph and its related thin-section in natural light showing unbroken shells, shell fragments, clasts and nodules in a micritic matrix. (c) Detailed photograph and its related thin-section in natural light showing conduits and veins that developed through the carbonate lens.