See detailed information for ELR TBH1
⚠️ 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 |
|---|---|---|---|
| 29M 0293y to 29M 0935y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 29M 0935y to 30M 1485y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 30M 1485y to 31M 0495y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 31M 0495y to 35M 0385y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 35M 0385y to 38M 0825y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 38M 0825y to 39M 0385y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 39M 0385y to 39M 0715y | Sand and Gravel | River Terrace Deposits Ⓤ | Wealden Group - Mudstone, Siltstone and Sandstone |
| 39M 0715y to 39M 1485y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 39M 1485y to 40M 1155y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 40M 1155y to 43M 1485y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 43M 1485y to 44M 1595y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 44M 1595y to 46M 0275y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 46M 0275y to 46M 0825y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 46M 0825y to 46M 1595y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 46M 1595y to 46M 1705y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 46M 1705y to 47M 0495y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 47M 0495y to 47M 0825y | Wealden Group - Sandstone and Siltstone, Interbedded | ||
| 47M 0825y to 48M 1375y | Wealden Group - Mudstone, Siltstone and Sandstone | ||
| 48M 1375y to 50M 1485y | Lower Greensand Group - Sandstone and Mudstone | ||
| 50M 1485y to 51M 0935y | Clay, Silt and Sand | Alluvium | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone |
| 51M 0935y to 51M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone |
| 51M 1045y to 51M 1155y | Sand and Gravel | River Terrace Deposits Ⓤ | Lower Greensand Group - Sandstone and Mudstone |
| 51M 1155y to 52M 1045y | Lower Greensand Group - Sandstone and Mudstone | ||
| 52M 1045y to 52M 1265y | Clay, Silt and Sand | Alluvium | Lower Greensand Group - Sandstone and Mudstone |
| 52M 1265y to 53M 0605y | Clay, Silt and Sand | Alluvium | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone |
| 53M 0605y to 53M 1375y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 53M 1375y to 54M 0165y | Clay, Silt and Sand | Alluvium | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone |
| 54M 0165y to 54M 0385y | Clay, Silt and Sand | Alluvium | Grey Chalk Subgroup - Chalk |
| 54M 0385y to 54M 1265y | Grey Chalk Subgroup - Chalk | ||
| 54M 1265y to 54M 1595y | Clay, Silt and Sand | Alluvium | Grey Chalk Subgroup - Chalk |
| 54M 1595y to 55M 0935y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 55M 0935y to 55M 1265y | White Chalk Subgroup - Chalk | ||
| 55M 1265y to 58M 0275y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 58M 0275y to 58M 0825y | Clay, Silt and Sand | Alluvium | Lambeth Group - Clay, Silt, Sand and Gravel |
| 58M 0825y to 58M 1705y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 58M 1705y to 59M 0275y | Clay, Silt and Sand | Alluvium | Lambeth Group - Clay, Silt, Sand and Gravel |
| 59M 0275y to 59M 1665y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |