The Howlands Butte
Gallery
Geology
The geology of The Howlands Butte is relatively obvious, being that is a cliff-former massif of the Redwall Limestone. Interestingly, two rock units, commonly thin layers, are found, one on top of the Redwall platform (a cliff-former result of non-easily erodible rock), the other under the Redwall, on another platform, the Muav Limestone. The Surprise Canyon Formation is on top; the Temple Butte Limestone is below.
The prominence of The Howlands Butte is a remainder cliff (or shelf) of cliff-former, unit 2-of-4 Supai Group, the Manakacha Formation. It sits on slope-former Watahomigi Formation. And both Supai units sit on debris, and a remaining-layer of Surprise Canyon Formation.
The Tonto Group units are below, and then Basement rocks are found at Granite Gorge.
See also
References
- ^ "The Howlands Butte – 5,572' AZ". Lists of John. Retrieved January 6, 2021.
- ^ "The Howlands Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved January 6, 2021.
- ^ “Geologic Map of the Grand Canyon in the Vicinity of the South Rim Visitor Center”, Kamilli, R. J., and Richard, S. M., editors, 1998. Geologic Highway Map of Arizona: Tucson, Arizona Geological Society and Arizona Geological Survey, 1 sheet containing text and figures, scale 1:1,000,000.
- ^ “Geologic Map of the Grand Canyon in the Vicinity of the South Rim Visitor Center”
- ^ Geologic Map