Why Don’t All Rivers Make Canyons?

Опубликовано 13 ноября 2024, 17:18

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The Grand Canyon is super-wide and super-deep, which might make you think that the Colorado River, which carved it, is particularly old or powerful. Or at least that's what I thought.

LEARN MORE
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To learn more about this topic, start your googling with these keywords:
- Canyon: a deep gorge, typically one with a river flowing through it.
- River equilibrium: a state in which a river's water flow and sediment transport are balanced.
- River incision: a natural process where a river cuts downward into its bed, deepening the channel
- Tectonic uplift: the geological process that occurs when the Earth's surface rises due to tectonic forces, such as plate movements or volcanic activity.


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CREDITS
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Cameron Duke | Script Writer, Narrator and Director
Lizah van der Aart | Storyboard Artist
Sarah Berman | Illustration, Video Editing and Animation
Nathaniel Schroeder | Music

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Lizah van der Aart • Sarah Berman • Cameron Duke
Arcadi Garcia i Rius • David Goldenberg • Melissa Hayes
Alex Reich • Henry Reich • Peter Reich
Ever Salazar • Leonardo Souza • Kate Yoshida

OTHER CREDITS
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Panoramic view of Colorado River, Marble Canyon
Credit: iStock via Getty Images

Canyon Cotahuasi, Peru
Credit: rchphoto/iStock via Getty Images

Yarlung Tsangpo River in mountain gorge, Brahmaputra, highlands of Tibet, China, Asia
Credit: imageBROKER/Bernd Bieder via Getty Images


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REFERENCES
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Beywater-Reyes, Sharon. “Technical Help.” Received by Cameron Duke.

Bierman, Paul R. Key Concepts in Geomorphology. S.L., W H Freeman, 2019.

Karlstrom, Karl. “Email Questions.” Received by Cameron Duke.

National Park Service. “Geology - Grand Canyon National Park (U.S. National Park Service).” Nps.gov, National Park Service, 2016, www.nps.gov/grca/learn/nature/grca-geology.htm

Roberts, G. G., et al. “An Uplift History of the Colorado Plateau and Its Surroundings from Inverse Modeling of Longitudinal River Profiles.” Tectonics, vol. 31, no. 4, Aug. 2012, p. n/a-n/a, doi.org/10.1029/2012tc003107

“The Dizzying Depths of Cotahuasi Canyon.” Nasa.gov, NASA Earth Observatory, 7 Feb. 2018, earthobservatory.nasa.gov/images/91686/the-dizzying-depths-of-cotahuasi-canyon

“Yarlung Tsangpo: The Everest of Rivers.” Earthobservatory.nasa.gov, 2 Mar. 2013, earthobservatory.nasa.gov/images/80558/yarlung-tsangpo-the-everest-of-rivers