Erosional Features

Improvement Notes

WaterfallHeadword Retreat

Hydraulic Action and attrition Vertical Erosion

• Landform occurs when there is a sudden change in gradient• Resistant band of rock across the top causing an overhang• Undercutting at the foot of the erosion causes the overhang to eventually collapse. Thus

causing headword erosion. A gorge is left behind. • This usually occurs at the top course along a rivers long profile •

Pothole• Potholes are cylindrical holes in the

river bed• They are present were there is

turbulent, high velocity water. The water usually has pebbles in suspension.

• The holes are drilled by vertical erosion through hydraulic action and attrition

V Shaped Valley / Interlocking Spurs

Rapids