See detailed information for ELR NAJ2
⚠️ 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 -017y to 0M 1155y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 0M 1155y to 0M 1595y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 0M 1595y to 2M 0715y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 2M 0715y to 2M 1595y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 2M 1595y to 3M 0715y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 3M 0715y to 3M 1375y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 3M 1375y to 3M 1485y | White Chalk Subgroup - Chalk | ||
| 3M 1485y to 4M 0935y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 4M 0935y to 4M 1375y | Diamicton | Clay-with-flints | White Chalk Subgroup - Chalk |
| 4M 1375y to 5M 0715y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 5M 0715y to 6M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 6M 0055y to 6M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 6M 0825y to 6M 0935y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 6M 0935y to 6M 1485y | Clay, Silt and Sand | Alluvium | Lambeth Group - Clay, Silt, Sand and Gravel |
| 6M 1485y to 6M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 6M 1705y to 7M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 7M 1045y to 7M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 7M 1705y to 8M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 8M 0055y to 8M 0715y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 8M 0715y to 8M 0935y | Sand and Gravel | Glacial Sand and Gravel | Lambeth Group - Clay, Silt, Sand and Gravel |
| 8M 0935y to 9M 0165y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 9M 0165y to 9M 1265y | Sand and Gravel | Glacial Sand and Gravel | Lambeth Group - Clay, Silt, Sand and Gravel |
| 9M 1265y to 12M 0605y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 12M 0605y to 15M 0825y | White Chalk Subgroup - Chalk | ||
| 15M 0825y to 15M 1595y | Diamicton | Clay-with-flints | White Chalk Subgroup - Chalk |
| 15M 1595y to 17M 1045y | White Chalk Subgroup - Chalk | ||
| 17M 1045y to 18M 1045y | Diamicton | Clay-with-flints | White Chalk Subgroup - Chalk |
| 18M 1045y to 19M 0055y | White Chalk Subgroup - Chalk | ||
| 19M 0055y to 19M 1485y | Diamicton | Clay-with-flints | White Chalk Subgroup - Chalk |
| 19M 1485y to 22M 1485y | White Chalk Subgroup - Chalk | ||
| 22M 1485y to 24M 1485y | Grey Chalk Subgroup - Chalk | ||
| 24M 1485y to 28M 1485y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 28M 1485y to 30M 1265y | Portland Group - Limestone and Calcareous Sandstone | ||
| 30M 1265y to 32M 0055y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone | ||
| 32M 0055y to 32M 0165y | Portland Group - Limestone and Calcareous Sandstone | ||
| 32M 0165y to 32M 0275y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone | ||
| 32M 0275y to 32M 0825y | Portland Group - Limestone and Calcareous Sandstone | ||
| 32M 0825y to 33M 1375y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone | ||
| 33M 1375y to 33M 1632y | Corallian Group - Limestone, Sandstone, Siltstone and Mudstone |