Diyab Fm

Column: Qatar, Column: United Arab Emirates

Synonym:

Dolomite layers are generally present in the upper part. Cream to tan, hard, dense, fine-grained limestone, mostly microcrystalline, containing a number of hard massive, partly conglomeratic, brown calcarenite layers, and, several thin softer calcarenite lenses. Colonial corals are common at several horizons in the middle and upper parts, commonly in position of growth. Cream to tan relatively soft chalky limestone with minor interbedded marl and tan clay shale; several prominent brown oolite units in middle and upper portions, with a particularly prominent one at the top.