When and How Did the Grand Canyon Form?
by Dr. Andrew A. Snelling and Tom Vail on June 6, 2014
"...A simple calculation of the volume of the Grand Canyon reveals almost 1,000 cubic miles (4,000 cubic km) of material have been removed from northern Arizona to produce just the topographic shape of the canyon itself. However, that is not all the erosion which occurred. The Grand Canyon has been carved into a broad elevated area known as the Colorado Plateau...The Colorado Plateau covers an area of about 250,000 square miles (647,000 square km) and consists of several smaller plateaus, which today stand at slightly varying elevations. The Kaibab Plateau, which reached more than 9,000 feet (2,740 m), forms part of the North Rim of the Grand Canyon. The sequence of sedimentary rock layers that forms these plateaus consists of many more layers than those exposed in the walls of the Grand Canyon today." (see link below)
by Dr. Andrew A. Snelling and Tom Vail on June 6, 2014
"...A simple calculation of the volume of the Grand Canyon reveals almost 1,000 cubic miles (4,000 cubic km) of material have been removed from northern Arizona to produce just the topographic shape of the canyon itself. However, that is not all the erosion which occurred. The Grand Canyon has been carved into a broad elevated area known as the Colorado Plateau...The Colorado Plateau covers an area of about 250,000 square miles (647,000 square km) and consists of several smaller plateaus, which today stand at slightly varying elevations. The Kaibab Plateau, which reached more than 9,000 feet (2,740 m), forms part of the North Rim of the Grand Canyon. The sequence of sedimentary rock layers that forms these plateaus consists of many more layers than those exposed in the walls of the Grand Canyon today." (see link below)
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