Geology for ELR CAM 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 -047y to 0M 0715y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 0M 0715y to 2M 0165y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 2M 0165y to 4M 0385y | Sand and Gravel | Glacial Sand and Gravel | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 4M 0385y to 4M 0935y | Sand and Gravel | Glacial Sand and Gravel | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 4M 0935y to 4M 1485y | Clay, Silt and Sand | Alluvium | Triassic Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 4M 1485y to 5M 1045y | Clay, Silt and Sand | Alluvium | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 5M 1045y to 6M 0055y | Sand and Gravel | Glacial Sand and Gravel | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 6M 0055y to 6M 0165y | Sand and Gravel | Glacial Sand and Gravel | Upper Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 6M 0165y to 6M 0275y | Clay, Silt and Sand | Alluvium | Upper Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 6M 0275y to 6M 0385y | Clay, Silt and Sand | Alluvium | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks |
| 6M 0385y to 6M 0495y | Sand and Gravel | Glacial Sand and Gravel | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks |
| 6M 0495y to 6M 0935y | Diamicton | Till | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks |
| 6M 0935y to 7M 0385y | Clay, Silt and Sand | Alluvium | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks |
| 7M 0385y to 7M 0825y | Clay, Silt and Sand | Alluvium | Millstone Grit Group - Mudstone, Siltstone and Sandstone |
| 7M 0825y to 7M 1045y | Clay, Silt and Sand | Alluvium | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 7M 1045y to 7M 1265y | Diamicton | Till | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 7M 1265y to 8M 0165y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 8M 0165y to 9M 0495y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 9M 0495y to 10M 1595y | Clay, Silt and Sand | Alluvium | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 10M 1595y to 11M 1595y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 11M 1595y to 13M 0165y | Clay, Silt and Sand | Alluvium | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 13M 0165y to 13M 0825y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 13M 0825y to 13M 1045y | Clay, Silt and Sand | Alluvium | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 13M 1045y to 13M 1705y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 13M 1705y to 17M 0495y | Clay, Silt and Sand | Alluvium | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 17M 0495y to 17M 1705y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 17M 1705y to 18M 0275y | Clay, Silt and Sand | Alluvium | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 18M 0275y to 22M 0165y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 22M 0165y to 22M 0495y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 22M 0495y to 23M 0385y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 23M 0385y to 23M 0605y | Clay, Silt and Sand | Alluvium | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 23M 0605y to 23M 1045y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 23M 1045y to 24M 0825y | Diamicton | Till | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |
| 24M 0825y to 24M 1332y | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ |