Fort Hays Limestone Member
| Fort Hays Limestone Stratigraphic range: Cretaceous |
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Fort Hays Limestone quarry at Cedar Bluff State Park, Kansas, USA.
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| Type | Formation Member |
| Unit of | Niobrara Formation of the Colorado Group |
| Underlies | Smoky Hill Chalk Member of the Niobrara Formation |
| Overlies | Carlile Formation (non-conformably) |
| Lithology | |
| Primary | Limestone |
| Other | Shale partings |
| Location | |
| Region | mid-continental: Colorado, Kansas, Nebraska |
| Country | United States |
| Type section | |
| Named for | Fort Hays |
| Named by | S. W. Williston |
| Location | Hogback ridge just west of old Fort Hays, Kansas |
| Year defined | 1893 |
The Fort Hays Limestone is a member of the Niobrara Formation of the Colorado Group exposed in Colorado, Kansas, and Nebraska and is named for the bluffs near the old Fort Hays, a well-known landmark in western Kansas.
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