| La Portada Formation | |
| Type: | Geological formation |
| Period: | Pliocene |
| Age: | Miocene–Pliocene |
| Prilithology: | Sandstone |
| Namedfor: | La Portada de Antofagasta |
| Region: | Antofagasta Region |
| Coordinates: | -23.4°N -70.5°W |
| Paleocoordinates: | -23.6°N -69.5°W |
| Subunits: | Cerro Bandurrias & Cuesta del Burro Members |
| Underlies: | Mejillones Formation |
| Overlies: | Caleta Herradura Formation |
La Portada Formation (Spanish; Castilian: Formación La Portada) is a geologic formation of Miocene and Pliocene age located near the Coast Range of northern Chile. The coarse-grained sandstones of the formation contain penguin fossils.[1] [2]