2013 Tectonics Workshop Videos - Video #20, Running Water II: Landscape Evolution
20. Running Water II: Landscape Evolution:  The Colorado River is a powerful geologic agent — powerful enough to have carved the Grand Canyon. This program focuses on how such carving takes place over time, looking at erosion and deposition processes as they relate to river characteristics and type of rock. The evolution of rivers is covered, along with efforts to prevent harmful consequences to humans.

As you view this video, please keep in mind the following questions.  You are strongly encouraged to type up your responses in a MS Word document as you view the video.  Then, when you are prepared to submit your responses to the questions, please “copy and paste” from your MS Word document and hit "Submit" at the end of this page.
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Explain the concept of baselevel.  How might changes in baselevel occur?
Why do different rock layers in the Grand Canyon develop slopes at different angles?
What is a stream terrace, and why are they significant?
Why might the Atchafalaya “capture” the Mississippi River?  How would this impact the social and economic vigor of New Orleans?
Why do deltas form?  It turns out that many modern deltas, worldwide, began to form approximately 7000 years ago.  Why might this have occurred?
What is the most interesting fact you learned from this virtual lecture that you did not know prior to watching? Why?
Now having completed watching this lecture, what is the piece of information that you think will stick in your head the longest? Why?
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