<P> The Grand Canyon is a river valley in the Colorado Plateau that exposes uplifted Proterozoic and Paleozoic strata , and is also one of the six distinct physiographic sections of the Colorado Plateau province . It is not the deepest canyon in the world ( Kali Gandaki Gorge in Nepal is much deeper ) . However , the Grand Canyon is known for its visually overwhelming size and its intricate and colorful landscape . Geologically , it is significant because of the thick sequence of ancient rocks that are well preserved and exposed in the walls of the canyon . These rock layers record much of the early geologic history of the North American continent . </P>
<P> The Grand Canyon is a river valley in the Colorado Plateau that exposes uplifted Proterozoic and Paleozoic strata , and is also one of the six distinct physiographic sections of the Colorado Plateau province . It is not the deepest canyon in the world ( Kali Gandaki Gorge in Nepal is much deeper ) . However , the Grand Canyon is known for its visually overwhelming size and its intricate and colorful landscape . Geologically , it is significant because of the thick sequence of ancient rocks that are well preserved and exposed in the walls of the canyon . These rock layers record much of the early geologic history of the North American continent . </P>
is the grand canyon in north or south america
is the grand canyon in north or south america
the North American continent
the North American continent