See detailed information for ELR BBL
⚠️ Geology shown below is based on British Geological Survey (BGS) low-resolution data sampled at 100 metre intervals along the ELR. The geology relative to the mileages should not be treated as accurate or complete. Data marked with Ⓤ is classed as undifferentiated by the BGS.
| Mileage | Material | Deposit | Bedrock |
|---|---|---|---|
| 127M 0769y to 127M 1155y | Clay, Silt and Sand | Alluvium | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 127M 1155y to 127M 1348y | Clay, Silt and Sand | Alluvium | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |