Hidalgo Formation
| Hidalgo Formation | |
|---|---|
| Stratigraphic range: Maastrichtian ~ | |
| Type | Geological formation |
| Underlies | Rubio Peak Formation |
| Overlies | Ringbone Formation, Skunk Ranch Formation |
| Thickness | 7,500 feet (2,300 m) |
| Lithology | |
| Primary | Basalt, andesite |
| Other | Volcaniclastics, limestone, shale |
| Location | |
| Coordinates | 31°50′49″N 108°27′25″W / 31.847°N 108.457°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | Hidalgo County, New Mexico |
| Named by | S.G. Lasky |
| Year defined | 1938 |
The Hidalgo Formation is a geologic formation of Maastrichtian age (latest Cretaceous) in southwestern New Mexico. It is of interest to geologists for the clues it preserves of the nature of Laramide deformation in the latest Cretaceous.