Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Rock Glacier and Debris-Covered Glacier

  • W. Brian Whalley
  • Norikazu Matsuoka
  • András Sik
  • Ákos Kereszturi
  • Henrik Hargitai
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_320

Note

There is no consensus among different schools on what the definition should be based on: morphology or origin.

Category

A type of  periglacial, glacial, or  permafrost landform.

Morphological Definition and Terminology

  1. (1)

    A rock glacier is “a slow-moving accumulation of (angular) rock debris, usually with a distinct ridge/furrow pattern and steep front and side slopes, whose length is generally greater than its width (tongue-shaped) existing on a mountain valley floor” (van Everdingen 1998).

     
  2. (2)

    A debris-covered glacier is a glacier, partly or wholly covered by weathered debris in its terminal (snout) area. The term may refer to a long, active glacier or to an area of ice slowly down-wasting under a debris cover. These may be sometimes associated with rock glaciers.

     

Morphological definition of rock glaciers is preferred by supporters of glacial formation model (e.g., Potter 1972) because the “permafrost model” assumes that the presence of permafrost, not explicit in imagery,...

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • W. Brian Whalley
    • 1
  • Norikazu Matsuoka
    • 2
  • András Sik
    • 3
  • Ákos Kereszturi
    • 4
  • Henrik Hargitai
    • 5
  1. 1.School of GeographyQueen’s University BelfastBelfastCanada
  2. 2.Faculty of Life and Environmental SciencesUniversity of TsukubaIbarakiJapan
  3. 3.Department of Physical GeographyEötvös Loránd UniversityBudapestHungary
  4. 4.Konkoly Thege Miklos Astronomical InstituteResearch Centre for Astronomy and Earth SciencesBudapestHungary
  5. 5.NASA Ames Research Center/NPPMoffett FieldUSA