A study of the general geology and physiography, of the Cornbrash (Jurassic) of Northamptonshire, England, revealed that the rocks which outcrop within the area, consisting of an alternating series of clays and limestones lying between thick Lias clays below and Oxford clay above, are particularly suitable for the development of superficial structures. Their mode of origin and relation to topography are discussed. The structures--small anticlines, or merely increases in slope--are limited in size and extent and unconnected with one another.

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