McKay Formation
Geologic formation in Oregon, USA / From Wikipedia, the free encyclopedia
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]
Quick Facts Type, Lithology ...
McKay Formation | |
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Stratigraphic range: Tortonian-Zanclean (Hemphillian) ~10.3–4.9 Ma | |
Type | Formation |
Lithology | |
Primary | Tuffaceous sandstone |
Location | |
Coordinates | 45.5°N 118.8°W / 45.5; -118.8 |
Approximate paleocoordinates | 45.4°N 116.1°W / 45.4; -116.1 |
Region | Umatilla County, Oregon |
Country | ![]() |
Type section | |
Named for | McKay Reservoir |
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