| Marquenas Formation | |
|---|---|
| Stratigraphic range: | |
 Marquenas Formation with crosscutting dike, Picuris Mountains | |
| Type | Formation |
| Overlies | Piedra Lumbre Formation |
| Thickness | 500 m (1,600 ft) |
| Lithology | |
| Primary | Quartzite |
| Other | Metaconglomerate |
| Location | |
| Coordinates | 36°12′25″N 105°49′12″W / 36.207°N 105.820°W |
| Region | Picuris Mountains, New Mexico |
| Country | United States |
| Type section | |
| Named for | Cerro de las Marquenas (36°12′25″N 105°49′12″W / 36.207°N 105.820°W) |
| Named by | Long |
| Year defined | 1976 |
  Marquenas Formation (the United States)  Marquenas Formation (New Mexico) | |
The Marquenas Formation is a geological formation that crops out in the Picuris Mountains of northern New Mexico. Detrital zircon geochronology gives it a maximum age of 1435 million years, corresponding to the Calymmian period.