| Tuerto Formation | |
|---|---|
| Stratigraphic range: | |
 Tuerto Formation in a road cut north of the Ortiz Mountains | |
| Type | Formation |
| Unit of | Santa Fe Group |
| Overlies | Blackshare Formation |
| Thickness | 7–21 m (23–69 ft) |
| Lithology | |
| Primary | Conglomerate |
| Other | Sandstone |
| Location | |
| Coordinates | 35°22′N 106°14′W / 35.36°N 106.24°W |
| Region | New Mexico |
| Country |  United States |
| Type section | |
| Named by | C.E. Stearns |
| Year defined | 1953 |
  Tuerto Formation (the United States)  Tuerto Formation (New Mexico) | |
The Tuerto Formation is a geologic formation exposed around the Ortiz Mountains of New Mexico. It is estimated to be of Pliocene to Pleistocene age, and forms the gravel cap of the Ortiz surface, one of the first pediment surfaces recognized by geologists.