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Young Streams
Youthful or young landscapes were characterized by William Morris Davis (1889) in the River Lifecycle Maturity Scheme. These three images show a cross-section illustration of Erosion, and then two oblique views of different young systems. West coast fault-slip mountains are relatively young, as are Hawaiian volcanoes.
Classification begins with a Stream starting on new land, then the cycle of youthful Erosion begins. The cycle progresses based on changes in the structure and composition of the landscape.
Image from: Stages in the fluvial cycle of Erosion Davis, W.M., 1909: Geographical essays. Boston
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