Slot canyon in the context of "Canyon"

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⭐ Core Definition: Slot canyon

A slot canyon is a long, narrow channel or drainageway with sheer rock walls that are typically eroded into either sandstone or other sedimentary rock. A slot canyon has depth-to-width ratios that typically exceed 10:1 over most of its length and can approach 100:1. The term is especially used in the semiarid southwestern United States and particularly the Colorado Plateau. Slot canyons are subject to flash flooding and commonly contain unique ecological communities that are distinct from the adjacent, drier uplands. Some slot canyons can measure less than 1 metre (3 ft) across at the top but drop more than 30 metres (100 ft) to the floor of the canyon.

Many slot canyons are formed in sandstone and limestone rock, although slot canyons in other rock types such as granite and basalt are possible. Even in sandstone and limestone, only a very small number of streams will form slot canyons due to a combination of the particular characteristics of the rock and regional rainfall.

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👉 Slot canyon in the context of Canyon

A canyon (from Spanish cañón; archaic British English spelling: cañon), gorge or chasm, is a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales. Rivers have a natural tendency to cut through underlying surfaces, eventually wearing away rock layers as sediments are removed downstream. A river bed will gradually reach a baseline elevation, which is the same elevation as the body of water into which the river drains. The processes of weathering and erosion will form canyons when the river's headwaters and estuary are at significantly different elevations, particularly through regions where softer rock layers are intermingled with harder layers more resistant to weathering.

A canyon may also refer to a rift between two mountain peaks, such as those in ranges including the Rocky Mountains, the Alps, the Himalayas or the Andes. Usually, a river or stream carves out such splits between mountains. Examples of mountain-type canyons are Provo Canyon in Utah or Yosemite Valley in California's Sierra Nevada. Canyons within mountains, or gorges that have an opening on only one side, are called box canyons. Slot canyons are very narrow canyons that often have smooth walls.

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Slot canyon in the context of 127 Hours

127 Hours is a 2010 biographical drama film co-written, produced, and directed by Danny Boyle. The film mainly stars James Franco, with Kate Mara, Amber Tamblyn, and Clémence Poésy appearing in brief supporting roles. In the film, canyoneer Aron Ralston must find a way to escape after he gets trapped by a boulder in an isolated slot canyon in Bluejohn Canyon, southeastern Utah, in April 2003. It is a British and American venture produced by Pathé, Everest Entertainment, Film4 Productions, HandMade Films and Cloud Eight Films.

The film, based on Ralston's memoir Between a Rock and a Hard Place (2004), was written by Boyle and Simon Beaufoy, co-produced by Christian Colson and John Smithson, and scored by A. R. Rahman. Beaufoy, Colson, and Rahman had all previously worked with Boyle on Slumdog Millionaire (2008). 127 Hours premiered at the Telluride Film Festival on 4 September 2010, and was released in the United States on 5 November 2010 and in the United Kingdom on 7 January 2011. It was acclaimed by critics and audiences and grossed $60.7 million worldwide. It was selected by the American Film Institute as one of the top 10 films of 2010 and was nominated for six Academy Awards, including Best Actor for Franco and Best Picture. The film also received nominations for eight British Academy Film Awards and three Golden Globe Awards.

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Slot canyon in the context of Colorado Plateau

The Colorado Plateau is a physiographic and desert region of the Intermontane Plateaus, roughly centered on the Four Corners region of the Southwestern United States. This plateau covers an area of 336,700 km (130,000 mi) within western Colorado, northwestern New Mexico, southern and eastern Utah, northern Arizona, and a tiny fraction in the extreme southeast of Nevada. About 90% of the area is drained by the Colorado River and its main tributaries: the Green, San Juan, and Little Colorado. Most of the remainder of the plateau is drained by the Rio Grande and its tributaries.

The Colorado Plateau is largely made up of high desert, with scattered areas of forests. In the south-west corner of the Colorado Plateau, nicknamed High Country, lies the Grand Canyon of the Colorado River. Much of the Plateau's landscape is related to the Grand Canyon in both appearance and geologic history. The nickname "Red Rock Country" suggests the brightly colored rock left bare to the view by dryness and erosion. Domes, hoodoos, fins, reefs, river narrows, natural bridges, and slot canyons are only some of the additional features typical of the Plateau.

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Slot canyon in the context of Zion National Park

Zion National Park is a national park of the United States located in southwestern Utah near the town of Springdale. Located at the junction of the Colorado Plateau, Great Basin, and Mojave Desert regions, the park has a unique geography and a variety of life zones that allow for unusual plant and animal diversity. Numerous plant species as well as 289 species of birds, 75 mammals (including 19 species of bat), and 32 reptiles inhabit the park's four life zones: desert, riparian, woodland, and coniferous forest. Zion National Park includes mountains, canyons, buttes, mesas, monoliths, rivers, slot canyons, and natural arches. The lowest point in the park is 3,666 ft (1,117 m) at Coalpits Wash and the highest peak is 8,726 ft (2,660 m) at Horse Ranch Mountain. A prominent feature of the 229-square-mile (590 km) park is Zion Canyon, which is 15 miles (24 km) long and up to 2,640 ft (800 m) deep. The canyon walls are reddish and tan-colored Navajo Sandstone eroded by the North Fork of the Virgin River. The park attracted 4,946,592 visitors in 2024.


Human habitation of the area started about 8,000 years ago with small family groups of Native Americans, one of which was the semi-nomadic Basketmaker Ancestral Puebloans (who used to be called Anasazi by early non-indigenous archeologists) (c. 300 CE). Subsequently, what has been called the Virgin Anasazi culture (c. 500) and the Parowan Fremont group developed as the Basketmakers settled in permanent communities. Both groups moved away by 1300 and were replaced by the Parrusits and several other Southern Paiute subtribes. Mormons came into the area in 1858 and settled there in the early 1860s.

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