Geology for ELR RNS 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 |
|---|---|---|---|
| 85M 1150y to 85M 1265y | Silt | Brickearth | White Chalk Subgroup - Chalk |
| 85M 1265y to 85M 1726y | White Chalk Subgroup - Chalk |