Redonda Formation
| Redonda Formation | |
|---|---|
| Stratigraphic range: Norian ~ | |
| Type | Formation |
| Unit of | Chinle Group |
| Sub-units | Duke Ranch, Quay, Red Peak, San Jon Creek & Wallace Ranch members |
| Underlies | Entrada Formation |
| Overlies | Bull Canyon Formation |
| Thickness | 25–425 feet (7.6–129.5 m) |
| Lithology | |
| Primary | Shale |
| Other | Limestone, sandstone |
| Location | |
| Coordinates | 34°57′54″N 103°42′04″W / 34.965°N 103.701°W |
| Approximate paleocoordinates | 9°54′N 43°12′W / 9.9°N 43.2°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | Redonda Mesa |
| Named by | Dobrovolny and Summerson |
| Year defined | 1946 |
The Redonda Formation is a geologic formation exposed in eastern New Mexico. It contains vertebrate fossils of the late Triassic Period. Fossil theropod tracks have been reported from the formation.