| Computer Code: |
HGGR |
Preferred Map Code: |
HOG |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Very dense, clast-supported diamicton comprising angular clasts of greywacke siltstone in a matrix of pale yellowish brown, silty sand. |
| Definition of Lower Boundary: |
Generally an unconformable boundary on bedrock. Locally resting on reddish brown, stony clayey diamiction that possibly correlates with the Chapelknowe Till Member of the Gretna Till Formation. |
| Definition of Upper Boundary: |
Sharp erosional or gradational, glacitectonic boundary with the overlying undivided Langholm Till Formation. |
| Thickness: |
5m |
| Geographical Limits: |
Southern Uplands of Scotland. |
| Parent Unit: |
Langholm Till Formation (LHTI)
|
| Previous Name(s): |
Hoghill Gravel Formation [Obsolete Name and Code: Use HGGR]
(-2235)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
River cliff on the southern side of the Hoghill Burn, 1km upstream of Hoghill Farm. Merritt et al. In prep: Field locality ME 312. |
| Reference(s): |
| McMillan, A A, Merritt, J W, Auton, C A, and Golledge, N R. 2011. The Quaternary geology of the Solway. British Geological Survey Research Report, RR/11/04. 69pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
