5 - Grand Canyon A powerful and inspiring landscape, the...

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Grand Canyon A powerful and inspiring landscape, the Grand Canyon overwhelms our senses through its immense size; 277 river miles (446km) long, up to 18 miles (29km) wide, and a mile (1.6km) deep. The Grand Canyon is a steep-sided gorge carved by the Colorado River in the United States in the state of Arizona The Channeled Scablands are a unique geological erosion feature in Washington state. They were created by the cataclysimic Missoula Floods that swept periodically across eastern Washington and down the Columbia River Plateau. Nearly two billion years of the Earth's geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted. While the specific geologic processes and timing that formed the Grand Canyon are the subject of debate by geologists,recent evidence suggests the Colorado River established its course through the canyon at least 17 million years ago. Since that time, the Colorado
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This note was uploaded on 06/11/2011 for the course GEOGRAPHY 600-201010 taught by Professor Christopherpost during the Spring '10 term at Kent State.

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