1. . from which the valley of 3. branch where it is deleted by the sudden flow and sudden flood of the .2. river through which the Colorado flows into the even ground, and becomes a valley, and land upheaves and a valley becomes deep further also became large deeply, and became a complicated form -- while being deleted in this way, the slope where a soft stratum is loose, and the hard stratum became a steep slope.
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The stratum in which the Colorado is flowing now, i.e., the lowest layer, is a
stratum of 2 billion years ago. Although this land became a mountain in the
meantime or being sunk to the seabed, the seven present stratums were made by
it. |
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Since Grand Canyon is deep, the temperature difference of a summit and a bottom
becomes no less than 40 degrees C. Consequently, various living things to what
lives in a desert from a cold area live. Moreover, while it is divided into a
northern coast and a southern coast that it was the kind same from the first and
it lives, there are some squirrels which have evolved separately. |
