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Glacial Erosion

Powerful processes of glacial erosion modify previous drainage patterns to influence present day scenery, farming and land use.

Glaciers are

  • big
  • deep
  • heavy
  • cold
  • rigid (though able to flow)
  • able to fill the whole valley
Spitsbergen



When compared with rivers, the sea and the wind as agents of erosion, glaciers are very different:

Glaciers need

  • tools of erosion
Scree

Tools of erosion need

  • to get to the rock-ice boundary
Crevasse

The rock-ice boundary will

  • be eroded by
    • abrasion
    • plucking
Polished surface

The tools of erosion will also be

  • abraded
Moraine



These processes give rise to characteristic landforms:

  • U shaped valley
Valley

  • corrie
Corrie

  • arete
Arete

  • horn peak
Horn peak

  • roche moutonée
Roche moutonnee

  • crag and tail
Crag & tail

Geopix Study Topic "Glacial Erosion"
  • gives a full image of each of these, and other, examples;
  • describes the features of the main glacial landforms;
  • explains how each landform is related to glacial processes;
  • suggests how to answer exam questions on this topic.


The Study Guide contains the following pages:

summary summary summary summary
summary summary summary summary
summary summary summary summary
summary summary summary

'Glacial Erosion' is part of the Glaciation Guide CD.

To order this CD go to the Geopix Online Store