Examine this photograph. Identify the features seen here, and describe in detail the sequence of events which must have occurred in order to produce these features
What will be an ideal response?
Answer: The photo shows incised meanders. Originally, the meanders probably developed on the floodplain of a stream that was relatively near base level. Then, a change in base level caused the stream to begin downcutting. One of two events could have occurred: Either the base level dropped, or the land on which the river flowed was uplifted. During the Ice Age, the ultimate base level dropped around the world, and many rivers incised downward. However, this photo appears to be in the arid American west, and so it's probably due to uplift of the Colorado Plateau beneath the meandering river.
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What will be an ideal response?