McKay Formation
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TypeFormation
PrimaryTuffaceous sandstone
| McKay Formation | |
|---|---|
| Stratigraphic range: Tortonian-Zanclean (Hemphillian) ~ | |
| Type | Formation |
| Lithology | |
| Primary | Tuffaceous sandstone |
| Location | |
| Coordinates | 45°30′N 118°48′W / 45.5°N 118.8°W |
| Approximate paleocoordinates | 45°24′N 116°06′W / 45.4°N 116.1°W |
| Region | Umatilla County, Oregon |
| Country | United States |
| Type section | |
| Named for | McKay Reservoir |
  McKay Formation (the United States)  McKay Formation (Oregon) | |
The McKay Formation is a geologic formation in Oregon. It preserves fossils dating back to the Tortonian to Zanclean stages (Hemphillian) of the Neogene period.[1][2][3]
