CGRG Bibliography of Canadian Geomorphology
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Author : Bones, J.G.
Date : 1973
Title : Process and sediment size arrangement on high Arctic talus, southwest Devon Island, NWT
Publication : Arctic and Alpine Research
Issue : 5(1):
Page(s) : 29-40
Abstract
The three dominant processes operating on talus of southwest Devon Island, Canada, produce characteristic arrangements in size of surface fragments. On 25 of the 27 surfaces measured, zonal (upslope-downslope) variance accounts for a much higher proportion of size variation than does lateral (cross-slope) variation. This characteristic supports the hypothesis of fall-sorting and reverse fall-sorting of rock fragments as the fundamental mode of talus formation. At present, 66% of the rockfall taluses have statistically significant zonal size arrangements, compared to 50% on talus with basal erosion and only 40% on alluvial talus. Basal erosion and meltwater activity may either reinforce or obscure the original downslope arrangement, depending upon the form of the process, its magnitude and frequency. Comparison of similar studies by way of statistical power analysis reveals considerable support for these findings
Bibliography of Canadian Geomorphology