| Gasconade Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
 Conodonts from the Gasconade Formation | |
| Type | Formation |
| Sub-units | Basal Gunter Sandstone member |
| Underlies | Roubidoux Formation |
| Overlies | Eminence Formation Cambrian (unconformable)[1] |
| Lithology | |
| Primary | Dolomite |
| Other | Sandstone |
| Location | |
| Coordinates | 38°12′N 91°06′W / 38.2°N 91.1°W |
| Region | Missouri |
| Country |  United States |
The Gasconade Formation is a geologic formation in the Ozarks of Missouri. It preserves fossils dating back to the Ordovician Period.