See detailed information for ELR ESK
⚠️ 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 |
|---|---|---|---|
| 69M 0841y to 69M 1265y | Clay, Silt and Sand | Alluvium | White Chalk Subgroup - Chalk |
| 69M 1265y to 69M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | White Chalk Subgroup - Chalk |
| 69M 1595y to 70M 0825y | Diamicton | Till | White Chalk Subgroup - Chalk |
| 70M 0825y to 70M 1705y | Diamicton | Till | Lambeth Group - Clay, Silt, Sand and Gravel |
| 70M 1705y to 72M 0605y | Diamicton | Till | Thames Group - Clay, Silt, Sand and Gravel |
| 72M 0605y to 73M 1155y | Sand and Gravel | Glacial Sand and Gravel | Thames Group - Clay, Silt, Sand and Gravel |
| 73M 1155y to 73M 1595y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 73M 1595y to 74M 0275y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 74M 0275y to 75M 0605y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 75M 0605y to 75M 0825y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 75M 0825y to 75M 1265y | Sand and Gravel | Glacial Sand and Gravel | Thames Group - Clay, Silt, Sand and Gravel |
| 75M 1265y to 76M 0825y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 76M 0825y to 78M 1045y | Sand and Gravel | Glacial Sand and Gravel | Thames Group - Clay, Silt, Sand and Gravel |
| 78M 1045y to 79M 0935y | Sand and Gravel | Crag Group | Thames Group - Clay, Silt, Sand and Gravel |
| 79M 0935y to 79M 1595y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 79M 1595y to 79M 1705y | Clay, Silt and Sand | Alluvium | |
| 79M 1705y to 80M 0165y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 80M 0165y to 80M 0385y | Clay, Silt and Sand | Alluvium | |
| 80M 0385y to 80M 1485y | Sand and Gravel | Crag Group | Thames Group - Clay, Silt, Sand and Gravel |
| 80M 1485y to 81M 1375y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 81M 1375y to 82M 0275y | Sand and Gravel | Crag Group | Thames Group - Clay, Silt, Sand and Gravel |
| 82M 0275y to 82M 1265y | Sand and Gravel | Crag Group | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 82M 1265y to 83M 0055y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 83M 0055y to 83M 0495y | Sand and Gravel | Crag Group | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 83M 0495y to 83M 0605y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 83M 0605y to 83M 0935y | Clay, Silt and Sand | Alluvium | Thames Group - Clay, Silt, Sand and Gravel |
| 83M 0935y to 83M 1155y | Sand and Gravel | Crag Group | Thames Group - Clay, Silt, Sand and Gravel |
| 83M 1155y to 84M 0055y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 84M 0055y to 84M 0935y | Diamicton | Till | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 84M 0935y to 87M 0055y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 87M 0055y to 88M 0055y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 88M 0055y to 88M 1045y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 88M 1045y to 89M 1045y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 89M 1045y to 94M 0935y | Diamicton | Till | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 94M 0935y to 95M 0715y | Sand and Gravel | Crag Group | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 95M 0715y to 99M 0605y | Diamicton | Till | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 99M 0605y to 99M 0935y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 99M 0935y to 99M 1705y | Sand and Gravel | Crag Group | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 99M 1705y to 100M 1155y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 100M 1155y to 104M 0935y | Diamicton | Till | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 104M 0935y to 104M 1155y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 104M 1155y to 106M 0495y | Diamicton | Till | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 106M 0495y to 106M 1265y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 106M 1265y to 107M 1045y | Diamicton | Till | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 107M 1045y to 108M 1375y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 108M 1375y to 115M 0385y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 115M 0385y to 115M 1155y | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay | ||
| 115M 1155y to 115M 1485y | Clay, Silt and Sand | Alluvium | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 115M 1485y to 115M 1705y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 115M 1705y to 116M 0055y | Sand and Gravel | Glacial Sand and Gravel | |
| 116M 0055y to 116M 0590y | Sand and Gravel | Glacial Sand and Gravel | Neogene to Quaternary Rocks Ⓤ - Gravel, Sand, Silt and Clay |
| 116M 0590y to 116M 0631y | Sand and Gravel | Glacial Sand and Gravel |