Unequal Valley Development
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Description: "If the walls of the valley contain strata of unequal hardness, the form is modified by the projection of hard layers and the retreat of the softer ones." -Dryer, 1901
Source: Dryer, Charles R. Physical Geography (New York: American Book Company, 1901) 155
Keywords: valley development, corrasion, valley formation, valley over time, valley cross section, unequal strata, unequal valley
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