Date of Award:
5-2002
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Geosciences
Department name when degree awarded
Geology
Committee Chair(s)
John C. Schmidt
Committee
John C. Schmidt
Committee
Joel Pederson
Committee
Jim Evans
Abstract
The alluvial forms of the rivers that drain the Colorado Plateau are a product of the water and sediment load that tributaries deliver to the trunk streams. Where the Green and Colorado Rivers cross structural barriers, narrow canyons have been incised. In the steep terrain adjacent to many of these canyons debris flows occur in the catchment basins of tributaries and deliver coarse sediment to the mainstem river corridor. Over time, debris flow deposits have aggraded in trunk stream valleys and created landforms known as debris fans. The sizes of these debris fans are related to the accommodation space available for fan formation. Lithologic variation in the layer-cake stratigraphy of the Colorado Plateau has led to varying valley widths. Tributary catchment, debris fan, depositional site, and mainstem river characteristics are examined over the 156-kilometer reach of the Green River through Desolation and Gray Canyons. Desolation and Gray Canyons provide some of the widest valley widths and resultant debris fan areas on the Colorado Plateau.
Checksum
1db802260716180f919ba432b22ca3c8
Recommended Citation
Elliott, Caroline M., "Relationships between Tributary Catchments, Valley-Bottom Width, Debris-Fan Area, and Mainstem Gradient on the Colorado Plateau: A Case Study in Desolation and Gray Canyons on the Green River" (2002). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 6727.
https://digitalcommons.usu.edu/etd/6727
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