Diligencia Formation
| Diligencia Formation | |
|---|---|
| Stratigraphic range: Late Oligocene-Early Miocene (Arikareean) ~ | |
| Type | Formation |
| Overlies | Proterozoic augen gneiss (basement) Maniobra Formation (in the north) |
| Thickness | 1,500 m (4,900 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone, siltstone, limestone |
| Other | Interbedded basalt and andesite |
| Location | |
| Coordinates | 33°30′N 115°42′W / 33.5°N 115.7°W |
| Approximate paleocoordinates | 32°12′N 107°30′W / 32.2°N 107.5°W |
| Region | California |
| Country | United States |
| Extent | Orocopia Mountains |
| Type section | |
| Named by | Crowell |
| Year defined | 1975 |
Diligencia Formation (the United States) Diligencia Formation (California) | |
The Diligencia Formation (Td) is a geologic formation cropping out in the Orocopia Mountains in southern California. It preserves mammal fossils dating to the Late Oligocene to Early Miocene (Arikareean in the NALMA classification).