Geology for ELR BWC1 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 |
|---|---|---|---|
| 5M 0695y to 5M 0825y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 5M 0825y to 5M 1595y | Sand | Blown Sand | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 5M 1595y to 6M 1323y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |