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Mesa, Utah

Erosional Landform Pictures

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Mesas are mountains with flat, level tops and steep, even sheer sides. (more below)
Table mountain
Photo (c) 1979 Andrew Alden, licensed to About.com (fair use policy)
Mesa is Spanish for table, and another name for mesas is table mountains. Mesas form in arid climates in regions where nearly flat rocks, either sedimentary beds or large lava flows, serve as caprocks. These resistant layers protect the rock beneath them from eroding.

This mesa overlooks the Colorado River in northern Utah, where a strip of lush farmland follows the stream between its steep rock walls.

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