See detailed information for ELR UHL

 ⚠️ 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.

MileageMaterialDepositBedrock
1M 0035y to 1M 1155yThames Group - Clay, Silt, Sand and Gravel
1M 1155y to 2M 0055ySand and GravelRiver Terrace Deposits ⓊThames Group - Clay, Silt, Sand and Gravel
2M 0055y to 3M 0155yThames Group - Clay, Silt, Sand and Gravel