Alternative Titles: cycle of erosion, erosion cycle, geographic cycle Geomorphic cycle, also called geographic cycle, or cycle of erosion, theory of the evolution of landforms. In this theory, first set forth by William M. Between 1884 and 1934, landforms were assumed to change through time from “youth” to “maturity” to “old age,” each stage having specific characteristics.

GEOMORPHIC PROCESSES CHAPTER A fter learning about how the earth was born, how it evolved its crust and other inner layers, how its crustal plates moved and are. Fx Pansion Bfd Deluxe Collection Dvdr D5-delirium.

The initial, or youthful, stage of landform development began with uplift that produced fold or block mountains. Upon dissection by streams, the area would reach maturity and, ultimately, would be reduced to an old-age surface called a, with an elevation near.

Jetflash Recovery Tool V1.0.20: Full Version Software. The cycle could be interrupted by uplift during any period of the life cycle and thus returned to the youthful stage; this return is called. The geomorphic cycle could be applied to all landforms such as hillslopes, valleys, mountains, and drainage systems. It was assumed that, if the stage of a landform was known, its history followed directly according to a predetermined framework. Though Davis acknowledged that rock type, structure, and the processes of erosion play a part in landform determination, he emphasized that time was the primary factor. It is now believed that time is no more important in landform development than the other factors. The cycle-of-erosion theory has long been accepted in the face of accumulating quantitative data that refutes it.

It is generally held now that the initial conditions—or uplift—in a region do not necessarily predetermine the end products. Rather, there tends to be an eventual attainment of between landforms and the processes that act upon them. When this happens, the physiographic history of a region is “erased.”.