Curtis Formation
| Curtis Formation | |
|---|---|
| Stratigraphic range: | |
Curtis Formation type | |
| Type | Formation |
| Unit of | San Rafael Group |
| Underlies | Summerville Formation |
| Overlies | Entrada Sandstone |
| Lithology | |
| Primary | Sandstone |
| Other | Mudstone, limestone |
| Location | |
| Coordinates | 39°07′36″N 110°26′51″W / 39.126665°N 110.447615°W |
| Region | Utah |
| Country | United States |
| Type section | |
| Named for | Curtis Point, Emery County, Utah |
| Named by | Gilluly and Reeside |
| Year defined | 1928 |
The Curtis Formation is a geologic formation in Utah. It preserves fossils dating back to the Callovian age of the Jurassic period.