| Trimdon Limestone Quarry | |
| Map: | United Kingdom County Durham |
| Map Size: | 243 |
| Relief: | 1 |
| Location: | MAGiC MaP |
| Nearest Town: | Ferryhill Sedgefield |
| Coordinates: | 54.7119°N -1.4389°W |
| Area Ha: | 0.8 |
| Established: | 1992 |
| Website: | Trimdon Limestone Quarry SSSI |
Trimdon Limestone Quarry is a Site of Special Scientific Interest in the Sedgefield district of County Durham, England. It lies about 1 km west of the village of Trimdon Grange and about 5 km east of the village of Coxhoe.
The site is an abandoned quarry and exposed to a section of the Ford Formation of Late Permian magnesian limestone. The site is nationally important for an interpretation of the geological history of the Ford Formation carbonates.[1]
The abandoned quarry workings include an area of floristically-rich magnesian limestone grassland, a habitat which is nationally scarce in Britain, with only an estimated 270 ha remaining.
The site is part of a larger area that is managed by the Durham Wildlife Trust as the Trimdon Grange Quarry nature reserve.[2]