Geology for ELR SMJ2 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 |
|---|---|---|---|
| 0M -004y to 1M 0385y | Zechstein Group - Dolomitised Limestone and Dolomite | ||
| 1M 0385y to 1M 0825y | Permian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 1M 0825y to 1M 1705y | Clay, Silt and Sand | Alluvium | Zechstein Group - Dolomitised Limestone and Dolomite |
| 1M 1705y to 2M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | Zechstein Group - Dolomitised Limestone and Dolomite |
| 2M 0605y to 2M 1375y | Sand and Gravel | River Terrace Deposits Ⓤ | Permian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 2M 1375y to 2M 1595y | Permian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 2M 1595y to 3M 1265y | Zechstein Group - Dolomitised Limestone and Dolomite | ||
| 3M 1265y to 4M 1155y | Pennine Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 4M 1155y to 6M 0495y | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ | ||
| 6M 0495y to 10M 1265y | Pennine Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 10M 1265y to 11M 0495y | Clay, Silt and Sand | Alluvium | Pennine Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 11M 0495y to 15M 0495y | Pennine Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 15M 0495y to 17M 0275y | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ | ||
| 17M 0275y to 17M 0331y | Clay, Silt and Sand | Alluvium | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |