title: Drumlin formation: a rheological model.
abstract: Drumlins are formed in a layer of boulder clay separating a glacier fronm 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.
authors.forename: I J
authors.initials: IJ
authors.lastname: Smalley