Geology for ELR COS1 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 |
|---|---|---|---|
| 14M 0317y to 15M 0658y | Diamicton | Till | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |