Calcitic ooid grains that accumulated on high energy shoals. Sparse isopachus rim cements are calcite. Ths final void fill cementation is low magnesian calcite equant spar. Some of the spar is penetrating and replacing the ooids. The calcite cement was probably derived from earlier aragonitic material. The ooids are interpenetrating and have peloids nucleae. Ooid layers or cortex become brittle and locally break off the surfaces of the ooids under compaction.