A. Visit the gallery at: http://www.geo.duke.edu/geo41/str.htm
and
answer the following questions on stages of a river:
1. Click on the V-shaped valley image. In which stage of a river
is this portion?
2. Is erosion or deposition more prominent in this place?
Why?
3. Is the erosion mostly horizontal or vertical in this place?
Why?
4. Click on the Possible cutoff image. In which stage of a river
is this portion?
5. Is erosion or deposition more prominent in this place?
Why?
6. Is the erosion mostly horizontal or vertical in this place?
Why?
B. Visit the gallery at: http://www.geo.duke.edu/geo41/str2.htm
and
answer the following questions on stages of a river:
1. Click on "Small lake delta". What has happened to the
energy of the water? Why?
2. Does this change in energy result in erosion or deposition?
C. Visit the gallery at: http://geogweb.berkeley.edu/GeoImages/Wells/wells.html
and
answer the following questions on stages of a river:
1. Click on "channel incised in bedrock". Was this formed by
erosion or deposition?
2. What does this say about the energy of the river at some time?
3. In what stage of a river would you expect this to be?
Why?
D. Visit http://www.geo.duke.edu/geo41/str.htm
and answer the following questions on river morphology:
1. Click on the "Mud in suspension" image. What does this
tell you about the energy of the river at this place?
2. Click on the "Levees" image. Where would you expect
to find the coarsest materials deposited? The finest? Why?
3. Click on the "Deposition on inside of bend" image. Why
is the deposition there? Why is it not on the outside of the meanders?
E. Visit http://www.geo.duke.edu/geo41/str2.htm
and answer the following questions on river morphology:
1. Click on the "small alluvial fan" image. Is this landform
due to erosion or deposition?
2. What happened to the energy of the stream to cause this alluvial
fan?
3. Click on "Entrenched meanders of San Juan river". What
formation do you predict will appear in this place fairly soon?
4. Why, and in what part of the image?