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  2. Canyon - Wikipedia

    en.wikipedia.org/wiki/Canyon

    A box canyon is a small canyon that is generally shorter and narrower than a river canyon, with steep walls on three sides, allowing access and egress only through the mouth of the canyon. Box canyons were frequently used in the western United States as convenient corrals, with their entrances fenced.

  3. Landform - Wikipedia

    en.wikipedia.org/wiki/Landform

    Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills , mountains , canyons , and valleys , as well as shoreline features such as bays , peninsulas , and seas , [ 3 ] including submerged features such as mid-ocean ridges , volcanoes , and the great ocean basins .

  4. Canyon Lands - Wikipedia

    en.wikipedia.org/wiki/Canyon_Lands

    At the eastern margin of the Canyon Lands is the Mesa Verde, a huge cuesta that has been deeply dissected by streams. Here in great recesses in the canyon walls are found the ruins of ancient cliff dwellings. East of the Little Colorado River are the brilliantly colored areas known as the Painted Desert. Here the rocks show gorgeous colors in ...

  5. Geology of the Canyonlands area - Wikipedia

    en.wikipedia.org/wiki/Geology_of_the_Canyonlands...

    Shafer Canyon Overlook, Canyonlands. The geology of the park is the consequence of deposition, uplift and erosion. Island in the Sky is a mesa overlooking the Green River (Colorado River tributary) to the west and the Colorado River to the east, and separated from the Colorado Plateau by "the neck".

  6. Grand Canyon - Wikipedia

    en.wikipedia.org/wiki/Grand_Canyon

    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).

  7. Jun. 5—Forty-six years. That's the amount of time that has passed since Anna Sofaer began The Solstice Project. The move came after Sofaer's rediscovery of the Sun Dagger site on Fajada Butte in ...

  8. Valley - Wikipedia

    en.wikipedia.org/wiki/Valley

    Some sections of a stream or river valleys may have vertically incised their course to such an extent that the valley they occupy is best described as a gorge, ravine, or canyon. Rapid down-cutting may result from localized uplift of the land surface or rejuvenation of the watercourse as a result for example of a reduction in the base level to ...

  9. Bright Angel Shale - Wikipedia

    en.wikipedia.org/wiki/Bright_Angel_Shale

    In the Grand Canyon, the Bright Angel Shale is generally about 110 to 150 m (360 to 490 ft) thick. In the western Grand Canyon, the Bright Angel Shale is over 140 m (460 ft) thick and decrease eastward in thickness to only about 82 m (269 ft) at Toroweap in the central canyon. It is 100 m (330 ft) thick in Bright Angel Canyon.