CGRG Bibliography of Canadian Geomorphology
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Author : Gillott, J.E.
Date : 1979.
Title : Fabric, composition, and properties of sensitve soils from Canada, Alaska and Norway.
Publication : Engineering Geology
Issue : 14(2-3):
Page(s) : 149-172.
Abstract
The fabric and mineralogical composition of sensitive soils from widely separated parts of the world is qualitatively similar. The fabric is open but more complex than predicted theoretically. Bridge-bonded aggregations exist but clay-coated primary mineral grains are rather uncommon; some soils have platelet networks which resemble predicted fabrics more closely. Primary minerals, particularly quartz and feldspar, form a higher than normal proportion of the < 2-m size fraction and illite and chlorite are the dominant clay minerals; swelling clay minerals are present in some of the soils. Chemical analyses show that the amount of dispersing agent is frequently low and that in many of the soils there is too little calcite for cemented junctions to be of general significance unless the cementitious material is a noncarbonate. Like other sensitive soils these samples would be classed as "inactive", and their index properties are likewise similar to those of other glacial clays. None of the present theories is universally applicable to all sensitive soils and it is probable that sensitivity results from more than one mechanism. Hence, each case should be considered separately but with due consideration to previous findings.
Bibliography of Canadian Geomorphology