Geology for ELR BSW 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 |
|---|---|---|---|
| 0M 0118y to 1M 1705y | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 1M 1705y to 2M 1155y | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 2M 1155y to 6M 0055y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 6M 0055y to 7M 0935y | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 7M 0935y to 7M 1485y | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks | ||
| 7M 1485y to 7M 1705y | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 7M 1705y to 11M 0165y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 11M 0165y to 11M 0495y | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 11M 0495y to 13M 0605y | |||
| 13M 0605y to 13M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | |
| 13M 1705y to 14M 0825y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 14M 0825y to 14M 1265y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 14M 1265y to 15M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 15M 1265y to 15M 1595y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 15M 1595y to 15M 1705y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 15M 1705y to 17M 0049y | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |