| Servilleta Basalt | |
|---|---|
| Stratigraphic range: Pliocene | |
 View of Servilleta Basalt forming rim of Rio Grande Gorge. | |
| Type | Formation |
| Overlies | Santa Fe Group, Picuris Formation |
| Thickness | 1,500 ft (460 m) |
| Lithology | |
| Primary | Basalt |
| Location | |
| Coordinates | 36°33′11″N 105°56′10″W / 36.553°N 105.936°W |
| Region | Taos County, New Mexico |
| Country | United States |
| Type section | |
| Named for | settlement of Servilleta, New Mexico |
| Named by | Butler |
| Year defined | 1946 |
  Servilleta Basalt (the United States)  Servilleta Basalt (New Mexico) | |
The Servilleta Basalt[1][2] or Servilleta Formation[3][4] is a geologic formation that underlies most of the Taos Plateau of northern New Mexico.[5] It has a radiometric age of 3.6 to 4.5 million years, corresponding to the Pliocene epoch.[6]