For 10 points, name this accumulation of till and debris carried or deposited by a glacier.
Andrews and Smithson categorized these into four types based on dip patterns and fabric strengths, and these may have caused the pattern of Clarion and Webster soils in central Iowa. A Rogen variety may be caused by velocity gradients, and a push variety of this feature can be recognized by rocks disturbed from their original orientation. Kettle lakes may form when water is trapped behind one of these. The recessional variety is a retreating example of the terminal variety and reveals climate history, while lateral ones are found along the sides of their generating features. Drumlins can be formed from the ground variety of these by streamlining by overriding ice. For 10 points, name this accumulation of till and debris carried or deposited by a glacier.
Andrews and Smithson categorized these into four types based on dip patterns and fabric strengths, and these may have caused the pattern of Clarion and Webster soils in central Iowa.
{moraine}