| Murca Formation | |
|---|---|
| Stratigraphic range: Late Valanginian ~ | |
| Type | Geological formation |
| Unit of | Cáqueza Group |
| Underlies | La Naveta Fm., Trincheras Fm., Útica Fm. |
| Overlies | not observed |
| Thickness | up to 924 m (3,031 ft) |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone, siltstone |
| Location | |
| Coordinates | 5°15′27″N 74°21′12″W / 5.25750°N 74.35333°W |
| Region | Altiplano Cundiboyacense Eastern Ranges, Andes |
| Country |  Colombia |
| Type section | |
| Named for | Murca River |
| Named by | Moreno |
| Location | Pacho, El Peñón |
| Year defined | 1990 |
| Coordinates | 5°15′27″N 74°21′12″W / 5.25750°N 74.35333°W |
| Region | Cundinamarca, Boyacá |
| Country | Colombia |
The Murca Formation (Spanish: Formación Murca, Kim) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly subarkose sandstone with claystones and siltstones formation dates to the Early Cretaceous period; Valanginian epoch and has a maximum thickness of 924 metres (3,031 ft).