Geology for ELR MCL 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 -092y to 1M 0935y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 1M 0935y to 2M 0825y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 2M 0825y to 2M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 2M 1265y to 4M 0082y | Thames Group - Clay, Silt, Sand and Gravel |