Geology for ELR HAC 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 |
|---|---|---|---|
| 11M 0439y to 13M 0275y | Zechstein Group - Dolomitised Limestone and Dolomite | ||
| 13M 0275y to 13M 0935y | Peat | Peat | Zechstein Group - Dolomitised Limestone and Dolomite |
| 13M 0935y to 13M 1485y | Peat | Peat | Permian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 13M 1485y to 14M 0275y | Peat | Peat | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 14M 0275y to 14M 1155y | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 14M 1155y to 15M 0712y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |