Deep gorge of the Colorado River, in NW Ariz.: over 200 mi (322 km) long; 4-18 mi (6.4-29 km) wide; 1 mi (1.6 km) deep.
Grand-canyon Sentence Examples
For all she knew, the Grand Canyon was on the other side.
deep, hardly wider at the top than at the bottom, in the heavy Triassic sandstones of southern Utah; but the most famous example is the Grand Canyon (qv.) of Arizona, eroded by the Colorado river across the uplifted platform of Carboniferous limestone.
there is a giddy drop into the tremendous cut of the Grand Canyon of the Colorado river.
The surface in general is rolling, with a gentle slope northward, and drains through the Little Colorado (or Colorado Chiquito), Rio Puerco and other streams into the Grand Canyon.
These gradients enable the inconstant streams tributary to the Colorado to carve their canyons, some of which are in themselves very remarkable, though insignificant beside the Grand Canyon.