Geology for ELR HEG 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 |
|---|---|---|---|
| 21M 1442y to 21M 1705y | Sand and Gravel | Glacial Sand and Gravel | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 21M 1705y to 22M 0228y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |