Geology for ELR ROS 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 |
|---|---|---|---|
| 27M 0735y to 28M 0715y | Diamicton | Till | Wenlock Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 28M 0715y to 28M 0825y | Diamicton | Till | Silurian Rocks Ⓤ - Limestone, Mudstone and Calcareous Mudstone |
| 28M 0825y to 29M 0165y | Diamicton | Till | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 29M 0165y to 29M 0776y | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone |