See detailed information for ELR WVL
⚠️ 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 |
|---|---|---|---|
| 0M 1660y to 1M 0605y | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 1M 0605y to 1M 1595y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 1M 1595y to 1M 1705y | Clay, Silt and Sand | Alluvium | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 1M 1705y to 3M 0275y | Diamicton | Till | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 3M 0275y to 3M 1045y | Clay, Silt and Sand | Alluvium | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 3M 1045y to 3M 1595y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 3M 1595y to 5M 0385y | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 5M 0385y to 5M 0825y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 5M 0825y to 5M 1375y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 5M 1375y to 5M 1485y | Upper Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 5M 1485y to 6M 0055y | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks | ||
| 6M 0055y to 6M 0275y | Millstone Grit Group - Mudstone, Siltstone and Sandstone | ||
| 6M 0275y to 6M 0715y | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ | ||
| 6M 0715y to 6M 1485y | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ | ||
| 6M 1485y to 11M 1155y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 11M 1155y to 12M 1155y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 12M 1155y to 14M 0475y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |