Geology for ELR AHB 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 |
|---|---|---|---|
| 0M -021y to 0M 0055y | Clay, Silt and Sand | Alluvium | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |
| 0M 0055y to 0M 0385y | Sand and Gravel | River Terrace Deposits Ⓤ | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |
| 0M 0385y to 0M 0825y | Clay, Silt and Sand | Alluvium | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |
| 0M 0825y to 0M 0935y | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 0M 0935y to 0M 1045y | Devonian Rocks Ⓤ - Limestone, Mudstone and Calcareous Mudstone | ||
| 0M 1045y to 1M 0275y | Clay, Silt and Sand | Alluvium | Devonian Rocks Ⓤ - Limestone, Mudstone and Calcareous Mudstone |
| 1M 0275y to 1M 0561y | Clay, Silt and Sand | Alluvium | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |