| Cacho Formation | |
|---|---|
| Stratigraphic range: Mid-Late Paleocene ~ | |
| Type | Geological formation |
| Underlies | Bogotá Formation |
| Overlies | Guaduas Formation |
| Thickness | 50–400 m (160–1,310 ft) |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
| Location | |
| Coordinates | 4°35′11.4″N 74°14′25.8″W / 4.586500°N 74.240500°W |
| Region | Bogotá savanna Altiplano Cundiboyacense Eastern Ranges Andes |
| Country |  Colombia |
| Type section | |
| Named by | Julivert |
| Location | Soacha |
| Year defined | 1963 |
| Coordinates | 4°35′11.4″N 74°14′25.8″W / 4.586500°N 74.240500°W |
| Region | Cundinamarca |
| Country | Colombia |
The Cacho Formation (Spanish: Formación Cacho, E1C, Tpc, Tec) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly sandstone formation with thin intercalated beds of shales dates to the Paleogene period; Middle to Late Paleocene epochs, and has a maximum thickness of 400 metres (1,300 ft).