Geology for ELR LCH 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 |
|---|---|---|---|
| 5M 1577y to 6M 0165y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 6M 0165y to 6M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Thanet Sand Formation - Sand, Silt and Clay |
| 6M 1045y to 6M 1265y | Thanet Sand Formation - Sand, Silt and Clay | ||
| 6M 1265y to 7M 0385y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 7M 0385y to 7M 0825y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 7M 0825y to 8M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 8M 1045y to 14M 0055y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 14M 0055y to 14M 0715y | Lambeth Group - Clay, Silt, Sand and Gravel | ||
| 14M 0715y to 14M 0816y | Thames Group - Clay, Silt, Sand and Gravel |