weathering

• weathering 


  breakdown of rock in situ (where it is)
• mechanical weathering


  disintegration (break down) of rock

  broken up rock fragments will ne at cliff base
• chemical weathering


  decomposition of rocks caused by a chemical reaction
• carbonation


  chemical weathering

  rain water absorb carbon dioxide from the air and tuns acidic

  when the acidic rain touches the alkaline rock (limestone or chalk) it creates a chemical reaction

  the rocks slowly dissolve