| Great Britain Superficial Deposits Supergroup | |
| Type: | Supergroup |
| Age: | Neogene to Quaternary |
| Period: | Quaternary |
| Prilithology: | Till |
| Otherlithology: | Sand, gravel, silt, clay, head, peat etc |
| Country: | England, Scotland, Wales |
| Subunits: | Albion Glacigenic Group, Britannia Catchments Group, British Coastal Deposits Group, Caledonia Glacigenic Group, Crag Group, Dunwich Group, Residual Deposits Group, Brassington Formation |
| Overlies: | Neogene or earlier bedrock |
| Thickness: | up to 200m (700feet) |
| Extent: | all natural superficial deposits in Great Britain and the Isle of Man |
The Great Britain Superficial Deposits Supergroup is a Neogene to Quaternary lithostratigraphic supergroup (a sequence of rock strata or other definable geological units) present across Great Britain and the Isle of Man. It includes all of the natural superficial deposits found in Great Britain and comprises the Albion Glacigenic Group, Britannia Catchments Group, British Coastal Deposits Group, Caledonia Glacigenic Group, Crag Group, Dunwich Group and Residual Deposits Group. These deposits include till, sands, gravels, silts, head, clay, peat and other materials.[1]