Geology for ELR WJB 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 |
|---|---|---|---|
| 19M 1736y to 20M 1155y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 20M 1155y to 20M 1595y | Lower Greensand Group - Sandstone and Mudstone | ||
| 20M 1595y to 22M 1155y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 22M 1155y to 23M 0165y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 23M 0165y to 24M 1155y | Clay, Silt and Sand | Alluvium | Wealden Group - Sandstone and Siltstone, Interbedded |
| 24M 1155y to 25M 1485y | Clay, Silt and Sand | Alluvium | Wealden Group - Mudstone, Siltstone and Sandstone |
| 25M 1485y to 27M 0275y | Clay, Silt and Sand | Alluvium | Wealden Group - Sandstone and Siltstone, Interbedded |
| 27M 0275y to 27M 1705y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 27M 1705y to 31M 0495y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 31M 0495y to 31M 1705y | Clay, Silt and Sand | Alluvium | Wealden Group - Sandstone and Siltstone, Interbedded |
| 31M 1705y to 32M 1595y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 32M 1595y to 32M 1673y | Wealden Group - Mudstone, Siltstone and Sandstone |