Geology for ELR GSM5 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 |
|---|---|---|---|
| 106M 1704y to 107M 0165y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |
| 107M 0165y to 107M 1375y | Lias Group - Mudstone, Siltstone, Limestone and Sandstone | ||
| 107M 1375y to 108M 0737y | Diamicton | Till | Lias Group - Mudstone, Siltstone, Limestone and Sandstone |