What explanation can be given to explain why the rock layers in the Grand Canyon are different thicknesses?

The erosion patterns and thickness of different layers can reveal the climate during different years. A series of very dry years will have very thin layers of rock, when little erosion took place. The overall pattern of erosion and layering reveals the rate of water flow, from both the river and rain, through a canyon.



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The vivid colors of many of these layers are due mainly to small amounts of various minerals. Most contain iron, which imparts subtle shades of red, yellow, and green to the canyon walls. Climate plays an important role in the appearance of the canyon.

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Each geological rock layer of the Grand Canyon is a piece of the puzzle of the history of the Earth. Each layer contains clues into what kind of environment was present when the layer was being deposited. As well as the plants and animals that were living during this chapter of time.

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The Colorado River wears away soil, rock, and other materials, making the Grand Canyon deeper every day. The Grand Canyon is striped with colors . The stripes are layers of sediment that stacked on top of each other over many years . Each layer helps us learn how Earth has changed over time .

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