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The Roles of Erosion Rate and Rock Strength in the Evolution of Canyons along the Colorado River


Abstract For this dissertation, three separate papers explore the study areas of the western Grand Canyon, the Grand Staircase (as related to Grand Canyon) and Desolation Canyon on the Green River in Utah.

In western Grand Canyon, I use comparative geomorphology between the Grand Canyon and the Grand Wash Cliffs (GWC). We propose the onset of erosion of the GWC is caused by slip on the Grand Wash Fault that formed between 18 and 12 million years ago. Hillslope angle and channel steepness are higher in Grand Canyon than along the Grand Wash Cliffs despite similar rock types, climate and base level fall magnitude. These experimental controls allow inference that the Grand Canyon is younger and eroding at a faster rate than the Grand Wash Cliffs.

The... (more)
Created Date 2016
Contributor Darling, Andy Darling (Author) / Whipple, Kelin (Advisor) / Semken, Steven (Committee member) / Arrowsmith, Ramon (Committee member) / DeVecchio, Duane (Committee member) / Heimsath, Arjun (Committee member) / Arizona State University (Publisher)
Subject Geomorphology / Geology / colorado plateau / colorado river / cosmogenic isotopes / erosion / incision / surface processes
Type Doctoral Dissertation
Extent 238 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Geological Sciences 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis