Original Dunham classification (Dunham 1962)[1] Depositional texture recognizable Depositional texture not recognizable Original components not bound during deposition Original components were bound during deposition Contains mud Lacks mud and is grain-supported Mud-supported Grain-supported Less than 10 % grains More than 10 % grains Mudstone Wackestone Packstone Grainstone Boundstone Crystalline Carbonate