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Drumlin Formation: A Rheological Model

I. J. Smalley
Science
New Series, Vol. 151, No. 3716 (Mar. 18, 1966), pp. 1379-1380
Stable URL: http://www.jstor.org/stable/1718494
Page Count: 2
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Abstract

Drumlins are formed in a layer of boulder clay separating a glacier from certain types of terrain. Under certain conditions the large particles in the clay form a dilatant system. When flow in the separating layer is interrupted, part of the layer packs into an obstruction and the rest of the material flows around this obstruction, giving it a streamlined form.

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