Geology for ELR WTB 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 |
|---|---|---|---|
| 1M 1142y to 1M 1375y | Sand | Blown Sand | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 1M 1375y to 2M 0385y | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ | ||
| 2M 0385y to 2M 1147y | Sand | Blown Sand | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 2M 1147y to 2M 1194y | Sand | Blown Sand |