Geology for ELR MLN4 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 |
|---|---|---|---|
| 305M 1435y to 309M 0715y | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 309M 0715y to 313M 0935y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 313M 0935y to 313M 1485y | Unnamed Igneous Intrusion, Devonian - Mafic Igneous-Rock | ||
| 313M 1485y to 314M 0385y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 314M 0385y to 314M 0495y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 314M 0495y to 314M 0825y | Clay, Silt and Sand | Alluvium | Unnamed Igneous Intrusion, Devonian - Mafic Igneous-Rock |
| 314M 0825y to 314M 0935y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 314M 0935y to 314M 1045y | Clay, Silt and Sand | Alluvium | Unnamed Igneous Intrusion, Devonian - Mafic Igneous-Rock |
| 314M 1045y to 315M 0605y | Unnamed Igneous Intrusion, Devonian - Mafic Igneous-Rock | ||
| 315M 0605y to 315M 1155y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 315M 1155y to 315M 1595y | Unnamed Igneous Intrusion, Devonian - Mafic Igneous-Rock | ||
| 315M 1595y to 317M 1045y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 317M 1045y to 318M 0715y | Sand and Gravel | River Terrace Deposits Ⓤ | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 318M 0715y to 319M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |
| 319M 0055y to 319M 1595y | Clay, Silt and Sand | Alluvium | Middle Devonian Ⓤ - Mudstone, Siltstone and Sandstone |
| 319M 1595y to 320M 0935y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 320M 0935y to 320M 1485y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 320M 1485y to 321M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 321M 1265y to 323M 0165y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 323M 0165y to 323M 0715y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 323M 0715y to 324M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 324M 0605y to 326M 0165y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 326M 0165y to 326M 0605y | Upper Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 326M 0605y to 326M 1208y | Unnamed Extrusive Rocks, Devonian - Mafic Lava |