Geology for ELR GRS2 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 |
|---|---|---|---|
| 111M 1754y to 112M 0495y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 112M 0495y to 112M 0715y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 112M 0715y to 112M 1705y | Clay, Silt and Sand | Alluvium | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 112M 1705y to 114M 0275y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 114M 0275y to 114M 1265y | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone | ||
| 114M 1265y to 114M 1485y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 114M 1485y to 115M 0165y | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone | ||
| 115M 0165y to 115M 1155y | Sand and Gravel | River Terrace Deposits Ⓤ | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone |
| 115M 1155y to 115M 1375y | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone | ||
| 115M 1375y to 116M 0385y | Sand and Gravel | River Terrace Deposits Ⓤ | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone |
| 116M 0385y to 117M 1045y | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone | ||
| 117M 1045y to 117M 1485y | Sand and Gravel | River Terrace Deposits Ⓤ | Inferior Oolite Group - Limestone, Sandstone, Siltstone and Mudstone |
| 117M 1485y to 117M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 117M 1705y to 118M 0275y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 118M 0275y to 118M 1485y | Sand and Gravel | River Terrace Deposits Ⓤ | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 118M 1485y to 119M 0825y | Clay, Silt and Sand | Alluvium | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 119M 0825y to 120M 1045y | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks | ||
| 120M 1045y to 120M 1485y | Clay, Silt and Sand | Alluvium | Great Oolite Group - Sandstone, Limestone and Argillaceous Rocks |
| 120M 1485y to 121M 0165y | Clay, Silt and Sand | Alluvium | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 121M 0165y to 124M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 124M 1265y to 125M 0275y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 125M 0275y to 125M 1045y | Sand and Gravel | Glacial Sand and Gravel | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 125M 1045y to 126M 0605y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 126M 0605y to 126M 1485y | Sand and Gravel | Glacial Sand and Gravel | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 126M 1485y to 127M 1705y | Diamicton | Till | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 127M 1705y to 128M 0495y | Clay, Silt and Sand | Alluvium | Kellaways Formation and Oxford Clay Formation Ⓤ - Mudstone, Siltstone and Sandstone |
| 128M 0495y to 137M 0233y | Clay, Silt and Sand | Alluvium | West Walton Formation, Ampthill Clay Formation and Kimmeridge Clay Formation Ⓤ - Mudstone |