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The Grand Canyon [a] is a steep-sided canyon carved by the Colorado River in Arizona, United States.The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters).
The American Experience: Lost in the Grand Canyon - Companion site to the PBS series about Jown Wesley Powell's Colorado River journey. It includes a timeline, maps, and program information. Stereoviews of Indians and the Colorado River from the J.W. Powell Survey, ca. 1869-1874, The Bancroft Library
Map of Bering Canyon and four other submarine canyons in the Bering Sea Bering Canyon , in the Bering Sea near the Aleutian Islands , Alaska , the United States Kaikōura Canyon , off the coast of the Kaikōura Peninsula , New Zealand
The largest canyon in Europe is Tara River Canyon. The largest canyon in Africa is the Fish River Canyon in Namibia. [11] In August 2013, the discovery of Greenland's Grand Canyon was reported, based on the analysis of data from Operation IceBridge. It is located under an ice sheet.
A submarine canyon is a steep-sided valley cut into the seabed of the continental slope, sometimes extending well onto the continental shelf, having nearly vertical walls, and occasionally having canyon wall heights of up to 5 km (3 mi), from canyon floor to canyon rim, as with the Great Bahama Canyon. [1]
In 2010, Grand Canyon National Park was honored with its own coin under the America the Beautiful Quarters program. [14] On February 26, 2019, the Grand Canyon National Park commemorated 100 years since its designation as a national park. [15] The Grand Canyon had been part of the National Park Service's Intermountain Region until 2018.
The Painted Desert is a United States desert of badlands in the Four Corners area, [2] running from near the east end of Grand Canyon National Park and southeast into Petrified Forest National Park. It is most easily accessed from the north portion of Petrified Forest National Park.
Powell served as the second Director of the United States Geological Survey, a post he held from 1881 to 1894.This photograph dates from early in his term of office. John Wesley Powell (March 24, 1834 – September 23, 1902) [1] was an American geologist, U.S. Army soldier, explorer of the American West, professor at Illinois Wesleyan University, and director of major scientific and cultural ...