| Grayburg Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Unit of | Artesia Group |
| Underlies | Queen Formation |
| Overlies | San Andres Formation |
| Thickness | 294 feet (90 m) |
| Lithology | |
| Primary | Dolomite |
| Other | Sandstone, anhydrite |
| Location | |
| Coordinates | 32°50′38″N 104°01′01″W / 32.844°N 104.017°W |
| Region | New Mexico Texas |
| Country | United States |
| Type section | |
| Named for | Grayburg pool |
| Named by | R.I. Dickey |
| Year defined | 1940 |
  Grayburg Formation (the United States)  Grayburg Formation (New Mexico) | |
The Grayburg Formation is a geologic formation in west Texas and southern New Mexico.[1] It preserves fossils dating back to the Guadalupian Epoch of the Permian Period.[2]