See detailed information for ELR IOW
⚠️ 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 -094y to 0M 0715y | |||
| 0M 0715y to 4M 0605y | Solent Group - Clay, Silt and Sand | ||
| 4M 0605y to 4M 1045y | Bracklesham Group and Barton Group Ⓤ - Sand, Silt and Clay | ||
| 4M 1045y to 4M 1375y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 4M 1375y to 4M 1595y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 4M 1595y to 5M 0055y | White Chalk Subgroup - Chalk | ||
| 5M 0055y to 5M 0275y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 5M 0275y to 5M 0605y | Lower Greensand Group - Sandstone and Mudstone | ||
| 5M 0605y to 5M 1265y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 5M 1265y to 6M 0165y | Clay, Silt and Sand | Alluvium | Wealden Group - Mudstone, Siltstone and Sandstone |
| 6M 0165y to 6M 0495y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 6M 0495y to 8M 0783y | Lower Greensand Group - Sandstone and Mudstone |