Geology for ELR AYR4 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.

MileageMaterialDepositBedrock
22M 1754y to 23M 0385yClay, Silt and SandAlluviumClackmannan Group - Sedimentary Rock Cycles, Clackmannan Group Type
23M 0385y to 24M 0275yDiamictonTillClackmannan Group - Sedimentary Rock Cycles, Clackmannan Group Type
24M 0275y to 24M 0715yDiamictonTillUnnamed Extrusive Rocks, Dinantian - Mafic Lava and Mafic Tuff
24M 0715y to 24M 0935yDiamictonTillStrathclyde Group - Sedimentary Rock Cycles, Strathclyde Group Type
24M 0935y to 24M 1595yDiamictonTillUnnamed Extrusive Rocks, Dinantian - Mafic Lava and Mafic Tuff
24M 1595y to 25M 1375yDiamictonTillClackmannan Group - Sedimentary Rock Cycles, Clackmannan Group Type
25M 1375y to 26M 0495yDiamictonTillUnnamed Extrusive Rocks, Silesian - Mafic Lava and Mafic Tuff
26M 0495y to 27M 0165ySand and GravelRaised Marine Deposits (Undifferentiated)Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
27M 0165y to 27M 1375yClay, Silt and SandAlluviumScottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
27M 1375y to 28M 0825ySand and GravelRaised Marine Deposits (Undifferentiated)Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
28M 0825y to 28M 1045ySand and GravelRaised Marine Deposits (Undifferentiated)
28M 1045y to 28M 1265ySand and GravelRaised Marine Deposits (Undifferentiated)Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
28M 1265y to 29M 0935yClay, Silt and SandAlluviumScottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
29M 0935y to 30M 1265ySand and GravelRaised Marine Deposits (Undifferentiated)Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
30M 1265y to 31M 1375ySandBlown SandScottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete
31M 1375y to 32M 1705ySandBlown SandUnnamed Extrusive Rocks, Silesian - Mafic Lava and Mafic Tuff
32M 1705y to 33M 0055ySand and GravelRaised Marine Deposits (Undifferentiated)Unnamed Extrusive Rocks, Silesian - Mafic Lava and Mafic Tuff
33M 0055y to 33M 0164ySand and GravelRaised Marine Deposits (Undifferentiated)Scottish Coal Measures Group - Mudstone, Siltstone, Sandstone, Coal, Ironstone and Ferricrete