Geology for ELR LOO 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 0268y to 0M 0385y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 0M 0385y to 0M 0605y | Clay, Silt and Sand | Alluvium | |
| 0M 0605y to 0M 0715y | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 0M 0715y to 0M 0935y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 0M 0935y to 0M 1045y | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 0M 1045y to 0M 1375y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 0M 1375y to 0M 1595y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 0M 1595y to 1M 0605y | Clay, Silt and Sand | Alluvium | |
| 1M 0605y to 1M 0935y | |||
| 1M 0935y to 1M 1705y | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 1M 1705y to 2M 0165y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 2M 0165y to 2M 0385y | Clay, Silt and Sand | Alluvium | |
| 2M 0385y to 2M 0605y | |||
| 2M 0605y to 3M 1595y | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 3M 1595y to 4M 0605y | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 4M 0605y to 7M 0861y | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |