Traiguén Formation
| Traiguén Formation | |
|---|---|
| Stratigraphic range: Early Miocene | |
| Type | Geological formation |
| Lithology | |
| Primary | Tuff, basaltic pillow lava, breccia, sandstone, shale |
| Location | |
| Coordinates | 45°12′S 74°30′W / 45.2°S 74.5°W |
| Region | Aysén Region |
| Country | Chile |
| Type section | |
| Named for | Traiguén Island |
| Named by | Espinoza & Fuenzalida |
| Year defined | 1971 |
Traiguén Formation (Spanish: Formación Traiguén) is a volcano-sedimentary formation of Miocene age, located in the archipelagoes of Aysén Region of western Patagonia.