Alsea Formation
Geologic formation in Oregon, United States
From Wikipedia, the free encyclopedia
The Alsea Formation is a geologic formation in Oregon. It preserves fossils dating back to the Rupelian stage of the Oligocene period.[1]
| Alsea Formation | |
|---|---|
| Stratigraphic range: Rupelian (Whitneyan) ~ | |
| Type | Formation |
| Underlies | Yaquina Formation |
| Lithology | |
| Primary | Siltstone |
| Other | Mudstone |
| Location | |
| Coordinates | 44.6°N 124.0°W |
| Approximate paleocoordinates | 44.3°N 113.1°W |
| Region | Lincoln County, Oregon |
| Country | United States |
  Alsea Formation (the United States)  Alsea Formation (Oregon) | |