Geology for ELR BKR 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 |
|---|---|---|---|
| 7M 1268y to 9M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 9M 1595y to 10M 0275y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 10M 0275y to 10M 0495y | Clay, Silt and Sand | Alluvium | Lambeth Group - Clay, Silt, Sand and Gravel |
| 10M 0495y to 10M 0837y | Clay, Silt and Sand | Alluvium | Thanet Sand Formation - Sand, Silt and Clay |