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Yukon Landform Atlas

C.A. Huscroft, B.T. Elliot, and P.S. Lipovsky.

Periglacial landforms develop in cold environments that are not glacial. Permafrost (ground that is permanently below 0°C for at least 2 years) and seasonal freeze/thaw processes are the dominant influences in these environments.

This story map features 11 different periglacial landforms commonly found in Yukon as well as a classified permafrost map.

1. Active Layer Detachments Failures
2. Retrogressive Thaw Slumps
3. Rock Glaciers
4. Pingos
5. Palsas
6. Tors
7. Cryoplanation Terraces
8. Solifluction Features
9. Ice Wedge Polygons
10. Other Patterned Ground
11. Thermokarst Lakes
12. Classified Permafrost Model

Links to further reading and more detailed descriptions are provided.


The Yukon Landform Atlas was created as a joint effort between the Yukon Geological Survey and Crystal Huscroft of Thompson Rivers University.
For more information, please contact Crystal Huscroft ( or Brett Elliot (