Page 252 - Handbook of Gold Exploration and Evaluation

Sedimentation and detrital gold 223

4.16 Distribution of velocity at various discharges in Behana Creek (after
Douglas, 1977).

reasonable balance between aggradation and degradation on a seasonal basis.
Contrary to earlier views, such a balance may be achieved by any river at any
stage of development and not simply in its later stages. Typical curves of equal
velocity in various channel sections illustrate the pattern of evolution of a graded
profile from original succession of falls rapids and lakes. The ability of a stream
channel to reach such a state of equilibrium is governed by its capacity to adjust