composed primarily of ice field Ice mass may need to be resolved from ice field, the former referring simply to an accumulation of ice. icecap ice field FTT:836 IceSheet FTT:837 FTT:835 FTT:758 envoPolar icefall A field of ice, formed in regions of perennial frost. ice patch iceberg FTT:838 FTT:839 FTT:841 FTT:842 SWEETRealm:IceField FTT:840 ice sheet TGN:21147 water ice field cryoform