See detailed information for ELR LEC1
⚠️ 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 -109y to 6M 1155y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 6M 1155y to 7M 0275y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 7M 0275y to 13M 0825y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 13M 0825y to 13M 1155y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 13M 1155y to 14M 0275y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 14M 0275y to 15M 1595y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 15M 1595y to 15M 1705y | Sand and Gravel | Glacial Sand and Gravel | Lambeth Group - Clay, Silt, Sand and Gravel |
| 15M 1705y to 16M 1045y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 16M 1045y to 16M 1705y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 16M 1705y to 19M 0935y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 19M 0935y to 22M 0605y | White Chalk Subgroup - Chalk | ||
| 22M 0605y to 24M 1375y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 24M 1375y to 30M 0495y | White Chalk Subgroup - Chalk | ||
| 30M 0495y to 30M 0935y | Grey Chalk Subgroup - Chalk | ||
| 30M 0935y to 31M 0605y | Sand and Gravel | Sand and Gravel of Uncertain Age and Origin | Grey Chalk Subgroup - Chalk |
| 31M 0605y to 34M 0825y | Grey Chalk Subgroup - Chalk | ||
| 34M 0825y to 39M 0385y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 39M 0385y to 40M 1045y | Lower Greensand Group - Sandstone and Mudstone | ||
| 40M 1045y to 41M 1375y | Clay, Silt and Sand | Alluvium | Lower Greensand Group - Sandstone and Mudstone |
| 41M 1375y to 42M 0935y | Clay, Silt and Sand | Alluvium | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 42M 0935y to 42M 1265y | Clay, Silt and Sand | Alluvium | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |
| 42M 1265y to 42M 1485y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone | ||
| 42M 1485y to 43M 0055y | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 43M 0055y to 43M 0385y | Diamicton | Till | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |
| 43M 0385y to 43M 0935y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 43M 0935y to 43M 1155y | Diamicton | Till | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |
| 43M 1155y to 43M 1595y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 43M 1595y to 44M 0495y | Diamicton | Till | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |
| 44M 0495y to 45M 1485y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 45M 1485y to 46M 0495y | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 46M 0495y to 49M 0275y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 49M 0275y to 49M 1375y | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 49M 1375y to 50M 0165y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 50M 0165y to 50M 1045y | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 50M 1045y to 50M 1485y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 50M 1485y to 50M 1705y | Diamicton | Till | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 50M 1705y to 51M 1045y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 51M 1045y to 51M 1485y | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 51M 1485y to 52M 0715y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 52M 0715y to 52M 0935y | Diamicton | Till | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 52M 0935y to 52M 1705y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 52M 1705y to 53M 0935y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 53M 0935y to 53M 1155y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 53M 1155y to 54M 1595y | Diamicton | Till | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 54M 1595y to 58M 0275y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 58M 0275y to 58M 0715y | Diamicton | Till | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 58M 0715y to 58M 0935y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 58M 0935y to 58M 1155y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 58M 1155y to 58M 1375y | Diamicton | Till | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 58M 1375y to 59M 1045y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 59M 1045y to 60M 0605y | Diamicton | Till | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 60M 0605y to 61M 0385y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 61M 0385y to 63M 1045y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 63M 1045y to 64M 1045y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 64M 1045y to 66M 1485y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 66M 1485y to 67M 0385y | Sand and Gravel | River Terrace Deposits Ⓤ | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 67M 0385y to 67M 1705y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 67M 1705y to 68M 0495y | Sand and Gravel | Glacial Sand and Gravel | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone |
| 68M 0495y to 68M 1485y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 68M 1485y to 68M 1595y | Clay, Silt and Sand | Alluvium | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone |
| 68M 1595y to 69M 0055y | Sand and Gravel | Glacial Sand and Gravel | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone |
| 69M 0055y to 69M 1045y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 69M 1045y to 69M 1485y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 69M 1485y to 71M 0055y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 71M 0055y to 71M 1705y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 71M 1705y to 73M 0715y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 73M 0715y to 73M 1045y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 73M 1045y to 73M 1265y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 73M 1265y to 76M 0825y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 76M 0825y to 77M 0055y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 77M 0055y to 79M 0165y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 79M 0165y to 80M 0825y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 80M 0825y to 80M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 80M 1265y to 81M 1595y | Sand and Gravel | Glacial Sand and Gravel | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 81M 1595y to 83M 0582y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |