Geology for ELR INW 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 |
|---|---|---|---|
| 104M 1680y to 105M 1155y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 105M 1155y to 105M 1595y | White Chalk Subgroup - Chalk | ||
| 105M 1595y to 106M 0002y |