Fayetteville Shale
The Fayetteville Shale is a geologic formation of Mississippian age (354–323 million years ago) composed of tight shale within the Arkoma Basin of Arkansas and Oklahoma. It is named for the city of Fayetteville, Arkansas, and requires hydraulic fracturing to release the natural gas contained within.
| Fayetteville Shale | |
|---|---|
| Stratigraphic range: Carboniferous: Mississippian (Serpukhovian) | |
Outcrop of the lower Fayetteville Shale in northern Arkansas | |
| Type | Geological formation |
| Sub-units | Wedington Sandstone Member |
| Underlies | Pitkin Limestone, Hale Formation |
| Overlies | Ruddell Shale, Batesville Sandstone Moorefield Shale |
| Area | Arkansas and Oklahoma |
| Thickness | 50 to 500 feet (15 to 152 m) |
| Lithology | |
| Primary | Shale |
| Other | Sandstone, limestone |
| Location | |
| Region | Arkansas |
| Country | United States |
| Extent | 50 miles (80 km) |
| Type section | |
| Named for | Fayetteville, Washington County, Arkansas |
| Named by | Frederick Willard Simonds |
The Fayetteville formation runs widespread across Arkansas | |
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