v valley

• processes -

  • hydraulic action - water compresses air into river bank causing materials to be dislodged
  • abrasion - what force throws bed load at banks causing erosion
  • solution - soluble rocks react with acid in the water
• 1. vertical erosion cuts downwards into valley
  2. valley sides steepened by freeze thaw, gravity pulls loose material into river increasing the rivers erosive power
  3. bedload removed by saltation deepening valley
  4. river may wind round harder rock creating interlocking spurs