| Arcabuco Formation | |
|---|---|
| Stratigraphic range: Tithonian-Berriasian ~ | |
 Arcabuco Formation at the Sáchica rock shelter | |
| Type | Geological formation |
| Underlies | Rosablanca Fm., Cumbre Fm. |
| Overlies | Girón Formation |
| Thickness | 500–800 m (1,600–2,600 ft) |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
| Location | |
| Coordinates | 5°38′11″N 73°30′41″W / 5.63639°N 73.51139°W |
| Region | Altiplano Cundiboyacense Eastern Ranges, Andes |
| Country |  Colombia |
| Type section | |
| Named for | Arcabuco |
| Named by | Scheibe |
| Location | Arcabuco (original) Villa de Leyva (redefined) |
| Year defined | 1938, 1985 |
| Coordinates | 5°38′11″N 73°30′41″W / 5.63639°N 73.51139°W |
| Region | Boyacá |
| Country | Colombia |
 Paleogeography of Northern South America 150 Ma, by Ron Blakey | |
The Arcabuco Formation (Spanish: Formación Arcabuco, Jar, JKa) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation consists of thick beds of light-coloured quartzitic sandstones and conglomerates with occasional shales and dates to the Late Jurassic and Early Cretaceous periods; Tithonian to Berriasian epochs. Dinosaur footprints have been found in the Arcabuco Formation near the Iguaque anticlinal outside Chíquiza, Boyacá.