Redwall Limestone
The Redwall Limestone is a resistant cliff-forming unit of Mississippian age that forms prominent, red-stained cliffs in the Grand Canyon, ranging in height from 500 feet (150 m) to 800 feet (240 m).
| Redwall Limestone | |
|---|---|
| Stratigraphic range: Early and early Late Mississippian | |
Redwall Limestone cliff, and upper platform of cliff extension (resting on very short Muav Limestone cliff), from Tower of Set, central Grand Canyon, adjacent Granite Gorge. The bottom of Redwall cliffs typically rest on sections of Temple Butte Formation-(locally), or attached sections of Muav Limestone cliffs (regionally exposed in Grand Canyon, elsewhere in Arizona, not always with surface exposure). | |
| Type | Geological formation |
| Underlies | Surprise Canyon Formation (Surprise Canyon Formation locally fills paleovalleys, caves, and collapse structures cut into the underlying Redwall Limestone.) |
| Overlies | Muav Limestone and Temple Butte Formation |
| Thickness | 800 feet (240 m), at maximum |
| Lithology | |
| Primary | fossiliferous limestone |
| Other | dolomite and chert |
| Location | |
| Region | Northern Arizona, southeast California, New Mexico, and southern Utah, Nevada |
| Country | United States of America |
| Type section | |
| Named for | the red appearance of its escarpment on either side of the Grand Canyon |
| Named by | Gilbert (1875) |
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