CGRG Bibliography of Canadian Geomorphology
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Author : Gravenor, C.P.
Date : 1955
Title : The origin and significance of prairie mounds
Publication : American Journal of Science
Issue : 253:
Page(s) : 475-481



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Abstract

Locally, the ground moraine of the western prairies is covered with till mounds. The mounds - which from the air resemble giant doughnuts -average 300 feet in diameter and15 feet in height, and in most cases have a central depression which lies 3 to 4 feet lower than the outer rim of the mounds. It is believed that the mounds originated as debris-filled pits on a stagnant ice surface and that the melting of the ice left the pit fillings as mounds.The mounds and associated features over parts of western Canada are probably related to slow wastage of the ice in a downslope direction.

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Bibliography of Canadian Geomorphology