Geology for ELR OJS is based on British Geological Survey (BGS) low-resolution data sampled at 100 metre intervals along the ELR. The geology presented should not be treated as accurate or complete. Data marked with Ⓤ is classed as undifferentiated by the BGS.
| Mileage | Material | Deposit | Bedrock |
|---|---|---|---|
| 24M 1187y to 25M 0825y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 25M 0825y to 25M 1485y | Lower Greensand Group - Sandstone and Mudstone | ||
| 25M 1485y to 26M 0715y | Clay, Silt and Sand | Alluvium | Lower Greensand Group - Sandstone and Mudstone |
| 26M 0715y to 26M 1436y | Lower Greensand Group - Sandstone and Mudstone |