Geology for ELR DAN 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 |
|---|---|---|---|
| 46M 0091y to 46M 0495y | Peat | Peat | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 46M 0495y to 46M 1265y | Peat | Peat | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 46M 1265y to 46M 1455y | Peat | Peat | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |