| Corsham Limestone Formation | |
| Period: | Bathonian |
| Type: | Geological formation |
| Prilithology: | Limestone |
| Unitof: | Great Oolite Group |
| Underlies: | Forest Marble Formation |
| Overlies: | Chalfield Oolite Formation, Athelstan Oolite Formation |
| Thickness: | up to 9m (30feet) |
| Area: | Cotswolds |
| Region: | Europe |
| Extent: | Gloucestershire, Somerset |
| Namedfor: | Corsham |
| Location Ts: | Corsham railway cutting |
| Thickness Ts: | 6.2-6.7 m |
The Corsham Limestone Formation is a geological formation in England. It is part of the Great Oolite Group and was deposited in the Bathonian stage of the Middle Jurassic. It is found in the central to southern regions of the Cotswolds.[1]