Caledonia Glacigenic Group

Updated on Dec 17, 2024

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Type Group Primary till (diamicton)		Thickness up to 120m
Other gravel, sand, clay, silt Country England, Scotland, Wales Extent all of Great Britain to the north and west of the Devensian glacial limit Unit of Great Britain Superficial Deposits Supergroup Underlies Britannia Catchments Group, British Coastal Deposits Group

The Caledonia Glacigenic Group is a Quaternary lithostratigraphic group (a sequence of rock strata or other definable geological units) present across the whole of Great Britain to the north and west of the furthest limit of Devensian glaciation ie throughout Scotland, Wales and northern England. It consists of a wide range of deposits deriving from the Devensian glaciation of glacial, glaciofluvial, glaciolacustrine and glaciomarine origin. It was previously known as the South Britain Glacigenic Group. Its upper boundary is the present day ground surface or an unconformable contact with the Britannia Catchments Group or the British Coastal Deposits Group.

The following subgroups are defined:

Shetland Glacigenic Subgroup

Western Isles Glacigenic Subgroup

Northwest Highlands Glacigenic Subgroup

Banffshire Coast and Caithness Glacigenic Subgroup

Inverness Glacigenic Subgroup

East Grampian Glacigenic Subgroup

Logie-Buchan Glacigenic Subgroup

Central Grampian Glacigenic Subgroup

Mearns Glacigenic Subgroup

Midland Valley Glacigenic Subgroup

Borders Glacigenic Subgroup

Southern Uplands Glacigenic Subgroup

Irish Sea Coast Glacigenic Subgroup

Manx Glacigenic Subgroup

Central Cumbria Glacigenic Subgroup

North Pennine Glacigenic Subgroup

North Sea Coast Glacigenic Subgroup

Wales Glacigenic Subgroup

References

Caledonia Glacigenic Group Wikipedia

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