See detailed information for ELR SAL
⚠️ 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 |
|---|---|---|---|
| 109M 1694y to 110M 1375y | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone | ||
| 110M 1375y to 112M 0275y | Gault Formation and Upper Greensand Formation Ⓤ - Mudstone, Sandstone and Limestone | ||
| 112M 0275y to 117M 0385y | Grey Chalk Subgroup - Chalk | ||
| 117M 0385y to 117M 0495y | White Chalk Subgroup - Chalk | ||
| 117M 0495y to 117M 1595y | Grey Chalk Subgroup - Chalk | ||
| 117M 1595y to 118M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | Grey Chalk Subgroup - Chalk |
| 118M 0825y to 119M 0495y | Clay, Silt and Sand | Alluvium | Grey Chalk Subgroup - Chalk |
| 119M 0495y to 119M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | Grey Chalk Subgroup - Chalk |
| 119M 1595y to 120M 1375y | Grey Chalk Subgroup - Chalk | ||
| 120M 1375y to 121M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | Grey Chalk Subgroup - Chalk |
| 121M 0825y to 121M 1155y | Clay, Silt and Sand | Alluvium | Grey Chalk Subgroup - Chalk |
| 121M 1155y to 121M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | Grey Chalk Subgroup - Chalk |
| 121M 1595y to 122M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 122M 0605y to 122M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Grey Chalk Subgroup - Chalk |
| 122M 1045y to 122M 1485y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 122M 1485y to 126M 0495y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 126M 0495y to 126M 0605y | White Chalk Subgroup - Chalk | ||
| 126M 0605y to 128M 1155y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 128M 1155y to 128M 1705y | White Chalk Subgroup - Chalk | ||
| 128M 1705y to 129M 0605y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 129M 0605y to 129M 0715y | White Chalk Subgroup - Chalk | ||
| 129M 0715y to 129M 1595y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 129M 1595y to 130M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 130M 0605y to 131M 0495y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 131M 0495y to 131M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 131M 0825y to 131M 0935y | White Chalk Subgroup - Chalk | ||
| 131M 0935y to 131M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 131M 1705y to 132M 0055y | White Chalk Subgroup - Chalk | ||
| 132M 0055y to 132M 0935y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 132M 0935y to 132M 1457y | White Chalk Subgroup - Chalk |