CGRG Bibliography of Canadian Geomorphology
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Author : French, H.M.
Date : 1974
Title : Active thermokarst processes, Eastern Banks Island, western Canadian Arctic
Publication : Canadian Journal of Earth Sciences
Issue : 11:
Page(s) : 785-794
Abstract
Active thermokarst processes occur on the hummocky and rolling terrain of eastern Banks Island in the western Canadian Arctic. The underlying sediments are ice-rich glacial silts, sands, and gravels. Ground ice slumps, triggered by a variety of local conditions, are particularly numerous in the area to the west of Johnson Point. Maximum rates of headwall retreat of between 6.0 - 8.0 m/yr appear typical but many slumps are short-lived and become stabilized within 30 - 50 summers of their initiation. Rapid thermal erosion along ice wedges gives rise to badland topography in certain areas where ice-rich silts enclose large wedges.
Bibliography of Canadian Geomorphology