See detailed information for ELR TLL
⚠️ 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 |
|---|---|---|---|
| 7M 0167y to 10M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 10M 0605y to 11M 1485y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 11M 1485y to 14M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 14M 0825y to 14M 1375y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 14M 1375y to 15M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | Thanet Sand Formation - Sand, Silt and Clay |
| 15M 0605y to 15M 0715y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 15M 0715y to 15M 1265y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 15M 1265y to 18M 1705y | White Chalk Subgroup - Chalk | ||
| 18M 1705y to 19M 0935y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 19M 0935y to 20M 0935y | White Chalk Subgroup - Chalk | ||
| 20M 0935y to 23M 1485y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 23M 1485y to 23M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 23M 1705y to 24M 0715y | Sand and Gravel | River Terrace Deposits Ⓤ | Thanet Sand Formation - Sand, Silt and Clay |
| 24M 0715y to 24M 1705y | Clay, Silt and Sand | Alluvium | Thanet Sand Formation - Sand, Silt and Clay |
| 24M 1705y to 26M 1155y | Sand and Gravel | River Terrace Deposits Ⓤ | Thanet Sand Formation - Sand, Silt and Clay |
| 26M 1155y to 26M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 26M 1265y to 28M 0165y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 28M 0165y to 32M 1257y | Thames Group - Clay, Silt, Sand and Gravel |