Geology for ELR TAT 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 |
|---|---|---|---|
| 15M 0488y to 19M 1045y | White Chalk Subgroup - Chalk | ||
| 19M 1045y to 19M 1705y | Diamicton | Clay-With-Flints | White Chalk Subgroup - Chalk |
| 19M 1705y to 20M 0055y | White Chalk Subgroup - Chalk | ||
| 20M 0055y to 20M 0825y | Diamicton | Clay-With-Flints | White Chalk Subgroup - Chalk |
| 20M 0825y to 20M 1045y | White Chalk Subgroup - Chalk | ||
| 20M 1045y to 21M 1705y | Diamicton | Clay-With-Flints | White Chalk Subgroup - Chalk |
| 21M 1705y to 22M 0055y | Diamicton | Clay-With-Flints | Thanet Sand Formation - Sand, Silt and Clay |
| 22M 0055y to 22M 0605y | Thanet Sand Formation - Sand, Silt and Clay | ||
| 22M 0605y to 23M 0921y | White Chalk Subgroup - Chalk |