Kaibab Limestone
The Kaibab Limestone is a resistant cliff-forming, Permian geologic formation that crops out across the U.S. states of northern Arizona, southern Utah, east central Nevada and southeast California. It is also known as the Kaibab Formation in Arizona, Nevada, and Utah. The Kaibab Limestone forms the rim of the Grand Canyon. In the Big Maria Mountains, California, the Kaibab Limestone is highly metamorphosed and known as the Kaibab Marble.
| Kaibab Limestone | |
|---|---|
| Stratigraphic range: Early to Middle Permian, Leonardian to Roadian | |
Bedded and jointed cliffs of the Kaibab Limestone at the Grand Canyon. (high resolution, expandable photo) | |
| Type | Geological formation |
| Sub-units | Fossil Mountain and Harrisburg members |
| Underlies | Moenkopi Formation |
| Overlies | Toroweap Formation, Coconino Sandstone, and White Rim Sandstone |
| Thickness | 300 feet (91 m)-500 feet (150 m) in Grand Canyon region. |
| Lithology | |
| Primary | fossiliferous limestone, sandy limestone, dolomite, and chert |
| Other | gypsum, siltstone, and sandstone |
| Location | |
| Region | Arizona–(northern) California–(southeast) Nevada–(east-central) and, Utah–(southern) |
| Country | United States – (Southwestern United States) |
| Type section | |
| Named for | It was named for the Kaibab Plateau, northern Arizona |
| Named by | Darton (1910) |
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