See detailed information for ELR CAR
⚠️ Geology shown below is based on British Geological Survey (BGS) low-resolution data sampled at 100 metre intervals along the ELR. The geology relative to the mileages should not be treated as accurate or complete. Data marked with Ⓤ is classed as undifferentiated by the BGS.
| Mileage | Material | Deposit | Bedrock |
|---|---|---|---|
| 1M 0437y to 2M 0055y | Sand and Gravel | River Terrace Deposits Ⓤ | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 2M 0055y to 2M 0935y | Sand and Gravel | Glacial Sand and Gravel | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 2M 0935y to 2M 1595y | Triassic Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 2M 1595y to 3M 0385y | Ludlow Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 3M 0385y to 3M 0605y | Sand and Gravel | Glacial Sand and Gravel | Ludlow Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 3M 0605y to 3M 0825y | Sand and Gravel | Glacial Sand and Gravel | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 3M 0825y to 3M 1595y | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 3M 1595y to 4M 0825y | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 4M 0825y to 4M 0935y | Diamicton | Till | Lower Devonian Rocks Ⓤ - Mudstone, Siltstone and Sandstone |
| 4M 0935y to 5M 1375y | Diamicton | Till | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded |
| 5M 1375y to 6M 0165y | Lower Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 6M 0165y to 6M 0605y | Upper Devonian Rocks Ⓤ - Sandstone and Conglomerate, Interbedded | ||
| 6M 0605y to 6M 1265y | Dinantian Rocks Ⓤ - Limestone with Subordinate Sandstone and Argillaceous Rocks | ||
| 6M 1265y to 6M 1485y | Millstone Grit Group - Mudstone, Siltstone and Sandstone | ||
| 6M 1485y to 7M 0055y | Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation Ⓤ | ||
| 7M 0055y to 7M 0385y | Sand and Gravel | Glacial Sand and Gravel | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 7M 0385y to 9M 1595y | Sand and Gravel | Glacial Sand and Gravel | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 9M 1595y to 13M 0165y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 13M 0165y to 13M 1045y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 13M 1045y to 13M 1265y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 13M 1265y to 13M 1375y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 13M 1375y to 14M 0055y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 14M 0055y to 18M 0055y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 18M 0055y to 19M 0055y | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete | ||
| 19M 0055y to 22M 1155y | Diamicton | Till | South Wales Upper Coal Measures Formation - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete |
| 22M 1155y to 23M 0825y | Diamicton | Till | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |
| 23M 0825y to 24M 0112y | Pennine Middle Coal Measures Formation and South Wales Middle Coal Measures Formation Ⓤ |