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Picture Scramble # 135 5 October 2001


3D View of Grand Canyon, Arizona

The Grand Canyon is one of North America's most spectacular geologic features. (30 pieces)

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Carved primarily by the Colorado River over the past six million years, the Grand Canyon sports vertical drops of 5,000 feet and spans a 445-kilometer-long stretch of Arizona desert. The strata along the steep walls of the canyon form a record of geologic time from the Paleozoic Era (250 million years ago) to the Precambrian (1.7 billion years ago).

The used in this picture scramble was acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument aboard the Terra spacecraft. Picture courtesy of NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.




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