| Fazaouro Formation | |
|---|---|
| Stratigraphic range: Early Miocene-Early Holocene | |
Recent (Maybe Early Holocene) depositional sequence | |
| Type | Formation |
| Lithology | |
| Primary | Mica, shale, feldspar |
| Other | Coal, plagioclase, biotite, muscovite |
| Location | |
| Location | Foz-Alfoz |
| Coordinates | 43°33′N 7°24′W / 43.55°N 7.40°W |
| Region | Galicia |
| Country | |
| Extent | >15–17 km2 (5.8–6.6 sq mi) |
| Type section | |
| Named for | Fazouro, unit inside the Foz locality |

The Fazaouro Formation is a fluvial-lacustrine sedimentary fill in the northeast of the Province of Lugo, at the site of the prehistoric depositional ranges of a supposed sedimentary glaciation. The area consists of a valley and ridge topography, with a series of small mounts at roughly ninety degrees to each other. The Fazaouro Formation develops through the extinct and extant current basins that fill the valley of Valadouro & Foz.