Geology for ELR CBC3 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 -017y to 0M 0165y | Sand and Gravel | Raised Marine Deposits Ⓤ | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 0M 0165y to 0M 1045y | Clay, Silt and Sand | Alluvium | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 0M 1045y to 1M 0055y | Clay, Silt and Sand | Alluvium | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 1M 0055y to 1M 0385y | Yoredale Group - Limestone, Sandstone, Siltstone and Mudstone | ||
| 1M 0385y to 1M 1155y | Diamicton | Till | Yoredale Group - Limestone, Sandstone, Siltstone and Mudstone |
| 1M 1155y to 2M 0055y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 2M 0055y to 3M 0055y | Diamicton | Till | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 3M 0055y to 4M 0055y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 4M 0055y to 4M 1265y | Clay, Silt and Sand | Alluvium | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 4M 1265y to 4M 1485y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 4M 1485y to 5M 0165y | Diamicton | Till | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 5M 0165y to 5M 0385y | Clay, Silt and Sand | Alluvium | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 5M 0385y to 7M 0495y | Clay, Silt and Sand | Alluvium | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 7M 0495y to 8M 0715y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 8M 0715y to 8M 0825y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 8M 0825y to 8M 1375y | Sand and Gravel | Glacial Sand and Gravel | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 8M 1375y to 9M 0935y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 9M 0935y to 9M 1265y | Diamicton | Till | Permian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 9M 1265y to 9M 1595y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 9M 1595y to 13M 0385y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 13M 0385y to 13M 1045y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 13M 1045y to 14M 1595y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 14M 1595y to 16M 0495y | Diamicton | Till | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 16M 0495y to 17M 0495y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 17M 0495y to 17M 1155y | Diamicton | Till | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 17M 1155y to 18M 0715y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 18M 0715y to 18M 1045y | Diamicton | Till | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 18M 1045y to 18M 1595y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 18M 1595y to 22M 0935y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 22M 0935y to 23M 0275y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 23M 0275y to 24M 0165y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 24M 0165y to 24M 1375y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 24M 1375y to 25M 0495y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 25M 0495y to 25M 1265y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 25M 1265y to 26M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 26M 0055y to 26M 1265y | Diamicton | Till | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 26M 1265y to 27M 1278y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |