]> Of streams, deposits, and other features, being immediately in front of or just beyond the outer limits of a glacier or ice sheet, and formed by or derived from glacier ice. Embedded in, carried by, or running through a glacier Pertaining to the area in or at the bottom of, or immediately beneath, a glacier. Rock glaciers are distinctive geomorphological landforms of blocky detritus which may extend outward and downslope from talus cones or from glaciers or the terminal moraines of glaciers. [Wikipedia]