Page:South African Geology - Schwarz - 1912.djvu/47

 movement is called the stoss side, because it receives the brunt of the pressure, and is consequently deeply

scored by the boulders held in the ice; the lee side, facing downstream, is unscratched, because the ice bends over it and does not touch it. These rounded

hummocks are called roches moutonnées, because the stoss side is covered with smooth ridges separated by deeply scored hollows, and these together give the