Geology for ELR UPG is based on British Geological Survey (BGS) low-resolution data sampled at 100 metre intervals along the ELR. The geology presented should not be treated as accurate or complete. Data marked with Ⓤ is classed as undifferentiated by the BGS.
| Mileage | Material | Deposit | Bedrock |
|---|---|---|---|
| 0M -215y to 1M 1155y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 1M 1155y to 4M 0935y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 4M 0935y to 4M 1155y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 4M 1155y to 5M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | Thanet Sand Formation - Sand, Silt and Clay |
| 5M 0055y to 5M 0385y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 5M 0385y to 6M 1045y | White Chalk Subgroup - Chalk | ||
| 6M 1045y to 6M 1396y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |