See detailed information for ELR HDT
⚠️ 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 |
|---|---|---|---|
| 3M 0052y to 4M 0605y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 4M 0605y to 6M 0385y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 6M 0385y to 14M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 14M 0055y to 14M 0971y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |