Geology for ELR NHB 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 |
|---|---|---|---|
| 56M 1220y to 57M 0271y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |