Nature
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The colorful formations exposed here include the slope-forming Chinle Shale of Triassic age, deposited in streams, lakes, and floodplains some 250 million years ago, and the cliff-forming Entrada Sandstone of Jurassic age, deposited as windblown sand some 160 million years ago. These are typical landforms of the Colorado Plateau province.
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New Mexico · United States
