Project #2985 - Grand CAnyon

1. Glen Canyon Dam and Lake Powell behind it are a major modification to the Colorado River and the Grand Canyon. A) Speculate on how the Colorado River and its stream geology have changed since the dam was built B) If the dam were removed, how might the river change?

2. Using the terms "Stream Capture" and "headward erosion", explain how the Colorado River has evolved in the last few million years.

3. The Vishnu Schist is the oldest rock formation in the Grand Canyon and the Colorado Plateau. Explain just 2 things this rock formation reveals about the geologic history of the area.

Subject Science
Due By (Pacific Time) 03/07/2013 12:00 am
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