Geology for ELR RDG2 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 |
|---|---|---|---|
| 61M 1559y to 61M 1705y | Bracklesham Group and Barton Group Ⓤ - Sand, Silt and Clay | ||
| 61M 1705y to 62M 0165y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 62M 0165y to 62M 0715y | Bracklesham Group and Barton Group Ⓤ - Sand, Silt and Clay | ||
| 62M 0715y to 63M 1375y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 63M 1375y to 64M 0385y | Sand and Gravel | Sand and Gravel of Uncertain Age and Origin | Thames Group - Clay, Silt, Sand and Gravel |
| 64M 0385y to 64M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 64M 1595y to 65M 0165y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 65M 0165y to 65M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 65M 1045y to 66M 1595y | Thames Group - Clay, Silt, Sand and Gravel | ||
| 66M 1595y to 66M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | Thames Group - Clay, Silt, Sand and Gravel |
| 66M 1705y to 67M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | Lambeth Group - Clay, Silt, Sand and Gravel |
| 67M 0825y to 68M 1587y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |