GEOL 1330 Lecture 20: 11-18
20 Jul 2016
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Document Summary
A general term of a rock, usually solid that underlies the soil or other unconsolidated materials. The pattern of such streams reflects the structure of the underlying bedrock in the drainage basin. Most alluvial streams can be subdivided on the basis of the pattern in map view into. Networks of shallow channels that branch and reunite. Stream having a pattern of successive meanders(bends, sinuous curves, loops or turns) Streams can move by one of the following processes. Water with high velocity, hugging the cutbank, associate with erosion(outside bend) and deposition(inside bend). Lateral migration moving in the direction of the cutbank, making the river narrow due the eroding inside bend. Sinuosity increases; decreasing slopes; the change in velocity decrease. As it converges, the silts and clay deposits in former channel connects each other, creating a alluvial stream from the meanders cutoff.
