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.
Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 737
2400×983, 626.7 KiB
1024×419, 104.7 KiB
640×262, 52.3 KiB
320×131, 17.8 KiB