CGRG Bibliography of Canadian Geomorphology
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Author : Aylsworth, J.M.; Burgess, M.M.; Desrochers, D.T.; Duk-Rodkin, A.; Robertson, T.; and Traunor, J.A.
Date : 2001.
Title : Surficial geology, subsurface materials, and thaw sentivity of sediments.
Publication : The Physical Environment of the Mackenzie Valley: a Baseline for the Assessment of Environmental Change, Edited by: L.D. Dyke and G.R. Brooks. Geological Survey of Canada, Bulletin
Issue : 547:
Page(s) : 41-48.
Abstract
The surficial geology of the Mackenzie valley and adjacent areas is presented in 1:l 000 000 scale compilation maps and is accompanied by geotechnical data from 56 boreholes chosen to represent typical stratigraphy of each major geological unit at several locations along the valley. For each of the representative boreholes, the potential for settlement of the ground surface as frozen ground thaws is determined, based on the thaw strain calculated for each soil layer of the borehole. Those geological materials most sensitive to thaw settlement are lacustrine and morainal, ice-rich, fine-grained sediments, and also the ice-rich and potentially highly compressible peat bogs. Much of the Mackenzie region is underlain by these materials; thus extensive terrain is susceptible to the impact of warming climatic conditions.
Bibliography of Canadian Geomorphology