Cholchol Formation
| Cholchol Formation | |
|---|---|
| Stratigraphic range: Middle–Upper Miocene | |
| Type | Geological formation |
| Underlies | Pliocene and Pleistocene alluvial fans and volcaniclastic deposits |
| Overlies | Bahía Mansa Metamorphic Complex Coastal Batholith of central Chile Mesozoic sediments |
| Thickness | 150–200 m (490–660 ft) |
| Lithology | |
| Primary | Claystone, sandstone, tuff, calcarenite, calcirudite |
| Location | |
| Coordinates | 38°00′S 72°00′W / 38.0°S 72.0°W |
| Region | Araucanía Region |
| Country | Chile |
| Type section | |
| Named for | Cholchol |
| Named by | Floreal García |
| Year defined | 1968 |
Cholchol Formation (Spanish: Formación Cholchol) is a geological formation composed of sediments that were deposited during the Miocene in the Temuco Basin of south–central Chile. The sediments were deposited in a marine environment.