Abstract

It is pointed out that Volterra dislocations in an elastic continuum may cross-slip, as do crystal dislocations. It is suggested that glide surfaces in a continuum will be corrugated by cross-slip, and that the analogue of dislocation dipoles will mark places where glide surfaces are bifurcated. Geological fault boundaries may be modelled as Volterra dislocations, and it is suggested that the analogue of dislocation dipoles on fault surfaces, where earthquakes may originate, form when fault boundaries cross-slip.

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