CANADIAN LANDFORM EXAMPLES - 17 RETROGRESSIVE THAW SLUMPS

  1. C.R. Burn1,
  2. A.G. Lewkowicz2

Article first published online: 28 JUN 2008

DOI: 10.1111/j.1541-0064.1990.tb01092.x

Issue

Canadian Geographer / Le Géographe canadien

Canadian Geographer / Le Géographe canadien

Volume 34, Issue 3, pages 273–276, September 1990

Additional Information

How to Cite

Burn, C. and Lewkowicz, A. (1990), CANADIAN LANDFORM EXAMPLES - 17 RETROGRESSIVE THAW SLUMPS. Canadian Geographer / Le Géographe canadien, 34: 273–276. doi: 10.1111/j.1541-0064.1990.tb01092.x

Author Information

  1. 1

    Department of Geography, University of Western Ontario, London, Ontario, Canada N6A 5C2

  2. 2

    Department of Geography, Erindale College, University of Toronto, Mississauga, Ontario, Canada L5L 1C6

Publication History

  1. Issue published online: 28 JUN 2008
  2. Article first published online: 28 JUN 2008

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Retrogressive thaw slumps are the most active geomor-phic features of permafrost terrain (NRC 1988). Also called ground-ice slumps (Mackay 1966), they consist of a layer of ice-poor overburden, an ice-rich face and a low-angle mudflow downslope (figures 1 and 2). They are common along northern rivers and lakeshores and the western Arctic coast. Some have been initiated by terrain disturbance associated with road construction and mineral exploration (Lambert 1972). Insulation of ice-rich slopes (e.g., using woodchips) may reduce thaw slumping. Initially, this appears to have been successful along the pipeline route from Norman Wells, NWT, to Zama, Alberta.

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