| San Carlos Formation | |
|---|---|
| Stratigraphic range: | |
Exposures of San Carlos Formation at Rancho Don Chuy, Aldama Municipality, Chihuahua. | |
| Type | Geological formation |
| Underlies | Caracol Formation |
| Overlies | Picacho Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
| Location | |
| Region | North America |
| Country | Mexico, United States |
| Type section | |
| Named for | San Carlos Mine |
| Named by | Vaughan, T.W. |
The San Carlos Formation is a geological formation in west Texas and east Chihuahua whose strata date back to the Campanian stage of the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.