See detailed information for ELR SBO
⚠️ 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 |
|---|---|---|---|
| 4M 1751y to 6M 1045y | Diamicton | Till | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 6M 1045y to 7M 0385y | Sand and Gravel | Glacial Sand and Gravel | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 7M 0385y to 7M 0715y | Clay, Silt and Sand | Alluvium | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 7M 0715y to 7M 1375y | Sand and Gravel | Glacial Sand and Gravel | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 7M 1375y to 8M 0825y | Diamicton | Till | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 8M 0825y to 8M 1705y | Clay, Silt and Sand | Alluvium | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 8M 1705y to 9M 0495y | Diamicton | Till | Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 9M 0495y to 13M 0055y | Diamicton | Till | Clackmannan Group - Sedimentary Rock Cycles, Clackmannan Group Type |
| 13M 0055y to 13M 0495y | Sand and Gravel | Glacial Sand and Gravel | Clackmannan Group - Sedimentary Rock Cycles, Clackmannan Group Type |
| 13M 0495y to 14M 0275y | Diamicton | Till | Strathclyde Group - Sedimentary Rock Cycles, Strathclyde Group Type |
| 14M 0275y to 14M 1705y | Sand and Gravel | Glacial Sand and Gravel | Strathclyde Group - Sedimentary Rock Cycles, Strathclyde Group Type |
| 14M 1705y to 15M 0715y | Sand and Gravel | Glacial Sand and Gravel | Inverclyde Group - Sandstone, Siltstone and Mudstone |
| 15M 0715y to 16M 0605y | Diamicton | Till | Inverclyde Group - Sandstone, Siltstone and Mudstone |
| 16M 0605y to 18M 1595y | Diamicton | Till | Portpatrick Formation and Glenwhargen Formation Ⓤ - Wacke |
| 18M 1595y to 19M 0495y | Diamicton | Till | Shinnel Formation and Glenlee Formation Ⓤ - Wacke |
| 19M 0495y to 19M 0935y | Shinnel Formation and Glenlee Formation Ⓤ - Wacke | ||
| 19M 0935y to 20M 0715y | Diamicton | Till | Shinnel Formation and Glenlee Formation Ⓤ - Wacke |
| 20M 0715y to 20M 1045y | Diamicton | Till | Gala Group - Wacke |
| 20M 1045y to 20M 1265y | Clay, Silt and Sand | Alluvium | Gala Group - Wacke |
| 20M 1265y to 21M 0935y | Gala Group - Wacke | ||
| 21M 0935y to 24M 1155y | Diamicton | Till | Gala Group - Wacke |
| 24M 1155y to 25M 1265y | Gala Group - Wacke | ||
| 25M 1265y to 26M 1155y | Clay, Silt and Sand | Alluvium | Gala Group - Wacke |
| 26M 1155y to 27M 0605y | Gala Group - Wacke | ||
| 27M 0605y to 28M 1375y | Diamicton | Till | Gala Group - Wacke |
| 28M 1375y to 29M 0495y | Clay, Silt and Sand | Alluvium | Gala Group - Wacke |
| 29M 0495y to 29M 1375y | Diamicton | Till | Gala Group - Wacke |
| 29M 1375y to 31M 0495y | Clay, Silt and Sand | Alluvium | Gala Group - Wacke |
| 31M 0495y to 31M 0715y | Clay, Silt and Sand | Alluvium | Hawick Group - Wacke |
| 31M 0715y to 31M 1705y | Diamicton | Till | Hawick Group - Wacke |
| 31M 1705y to 32M 0055y | Hawick Group - Wacke | ||
| 32M 0055y to 32M 0385y | Diamicton | Till | Hawick Group - Wacke |
| 32M 0385y to 33M 0055y | Clay, Silt and Sand | Alluvium | Hawick Group - Wacke |
| 33M 0055y to 35M 0926y | Sand and Gravel | Glacial Sand and Gravel | Hawick Group - Wacke |