Stratified drift is better sorted, and, as the name implies, stratified internally due to deposition in water. Some landforms are made of till, others are made of stratified drift deposits. A moraine is a ridge made of glacial till. Explain the difference between end moraines, lateral moraines, and terminal moraines on the Study Questions sheet at the end of this backgrounder. Deposition of till at the base of a continental ice sheet forms a nearly flat plain called ground moraine .
Drumlins are streamlined hills made of glacial till.
Describe the shape of drumlins, and explain how the shapes of drumlins indicate ice flow directions on the Study Questions sheet. Kames are steep-sided hills. The picture above shows kame delta deposits. An esker forms from deposition of stratified drift in a meltwater stream flowing below, on top of, or within a glacier. A meltwater stream within or at the base of a glacier is essentially flowing in a tunnel in the ice.