CGRG Bibliography of Canadian Geomorphology
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Author : Bunting, B.T.;
Date : 1977
Title : The occurence of vesicular structures in arctic and subarctic soils
Publication : Z.Geomorph.N.F.
Issue : 21:
Page(s) : 87-95.



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Abstract

Vesicular structures in soils are not only found in desert environments as described in this journal by Evenari, Yaalon & Gutterman (1974), but have been found in the Canadian High Arctic in niveo-alluvial deposits of calcareous silts; in the earthy cores of sorted stony earth circles and, in the subarctic, in acidic granitic sandy debris intruded by cryoturbation from a presumed former thaw layer. In these materials, the coarse vesicles are related to the effect of sudden pressure changes in a saturated compact matrix. Entrapment of air or water is not necessarily followed by its thermal expansion to cause vesicular pores, though rapid dehydration or expulsion of water helps the stabilisation of undistorted vesicles in nonstratified fine materials. There is also the possibility of air or water diffusion under pressure, or irregular drying which can cause variably -shaped vughs, or linear extensions to vesicles, in stratified or stony deposits.

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Bibliography of Canadian Geomorphology