See detailed information for ELR MCJ2
⚠️ 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 |
|---|---|---|---|
| 9M 0353y to 10M 1265y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 10M 1265y to 11M 0495y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 11M 0495y to 11M 0935y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 11M 0935y to 12M 1045y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 12M 1045y to 13M 0825y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 13M 0825y to 13M 1375y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 13M 1375y to 14M 1045y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 14M 1045y to 15M 0275y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 15M 0275y to 15M 0715y | White Chalk Subgroup - Chalk | ||
| 15M 0715y to 15M 1155y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 15M 1155y to 15M 1265y | White Chalk Subgroup - Chalk | ||
| 15M 1265y to 16M 0055y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 16M 0055y to 16M 0385y | White Chalk Subgroup - Chalk | ||
| 16M 0385y to 16M 1155y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 16M 1155y to 16M 1595y | White Chalk Subgroup - Chalk | ||
| 16M 1595y to 17M 0385y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 17M 0385y to 18M 1265y | White Chalk Subgroup - Chalk | ||
| 18M 1265y to 20M 0495y | Sand and Gravel | Glacial Sand and Gravel | White Chalk Subgroup - Chalk |
| 20M 0495y to 27M 0275y | Diamicton | Clay-with-flints | White Chalk Subgroup - Chalk |
| 27M 0275y to 29M 0165y | White Chalk Subgroup - Chalk | ||
| 29M 0165y to 30M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 30M 1595y to 31M 1485y | White Chalk Subgroup - Chalk | ||
| 31M 1485y to 32M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 32M 0825y to 32M 1045y | White Chalk Subgroup - Chalk | ||
| 32M 1045y to 34M 0605y | Grey Chalk Subgroup - Chalk | ||
| 34M 0605y to 37M 1045y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 37M 1045y to 37M 1155y | Sand and Gravel | River Terrace Deposits Ⓤ | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone |
| 37M 1155y to 37M 1375y | Sand and Gravel | River Terrace Deposits Ⓤ | Portland Group - Limestone and Calcareous Sandstone |
| 37M 1375y to 37M 1705y | Portland Group - Limestone and Calcareous Sandstone | ||
| 37M 1705y to 39M 0935y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone | ||
| 39M 0935y to 39M 1595y | Clay, Silt and Sand | Alluvium | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |
| 39M 1595y to 44M 1112y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |