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Diagrammatic sections representing the development of hog-backs. I, a simple anticlinal ridge consisting of hard and soft sediments overlying crystallinew rocks; II, the same after erosion and development of hog-backs (uniclines) on opposite sides; III, the same region after peneplanation and further arching; IV, development of the hog-backs in the second cycle of erosion.

Development of Hog-backs

Diagrammatic sections representing the development of hog-backs. I, a simple anticlinal ridge consisting…

Diagram showing the development of a peneplane from anticlinal ridges and the reappearance of the uniclinal topography after elevation and renewed erosion. This is the type of structure found in the Appalachians.

Development of a Peneplane

Diagram showing the development of a peneplane from anticlinal ridges and the reappearance of the uniclinal…