Mass Movement

• what is mass movement?


  The falling or movement of rock, often due to gravity
• what scale does soil creep happen on?


  a granular scale
• how does soil creep occur?


  soil which is damp moves very slowly down the slope as the water weight pushes it forwards
• what does a rockfall involve?


  the sudden collapse or breaking away of individual rock fragments or a block of rock at a cliff face
• what are rockfalls most commonly associated with?


  steep or verticle cliffs in heavily jointed and often quite resistant rock
• what does a landslide involve?


  a block of rock moving very rapidly downhill along a planar surface , often a bedding plane that is roughly parallel to the ground surface

  • the moving block of material remains largely intact
• what is a planar surface?


  a slide plane
• what is different landslide vs landslip?


  landslip has a curved slide surface rather than a flat one
• what does a mudflow involve?

  earth and mud flowing downhill, usually over unconsolidated or weak bedrock , often after heavy rainfall