| Computer Code: |
THTI |
Preferred Map Code: |
symb |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Diamicton, gravelly and sandy, typically light brown with clasts of predominantly Caledonian igneous and Moine metamorphic rocks. |
| Definition of Lower Boundary: |
Unconformable on bedrock. |
| Definition of Upper Boundary: |
Holocene strata. |
| Thickness: |
Up to 5m thick. |
| Geographical Limits: |
Caithness and Sunderland west of a line between Reay and Berridale (1:50 000 sheets 115 E and W, and sheet 110). |
| Parent Unit: |
Reay Burn Till Formation (REBU)
|
| Previous Name(s): |
Local Ground Moraine [Obsolete Name and Code: Use THTI]
(-4926)
|
| Alternative Name(s): |
Ladies Tent Till Member Of The Berridale Formation
|
| Stratotypes: |
| Type Section |
Trial pit CA 1448/SP2, on the western side of Loch Thormaid, Caithness. Auton, C A, Entwisle, D C and Golledge, N R. 2001. Dounreay catchment Quaternary Characterisation study: final interpretation report. British Geological Survey commissioned Report, CR/01/116. 122pp. |
| Reference Section |
Lady's Tent section, Langwell Water, Caithness. Hall and Whittington, 1989, p.312. |
| Reference(s): |
| Crampton, C B, and Carruthers, R G. 1914. The geology of Caithness. Memoir of the Geological Survey, Scotland. Sheets 110 and 116 (Scotland). |
| Hall, A M and Whittington, G. 1989. Late Devensian glaciation of southern Caithness. Scottish Journal of Geology, Vol.25, 307-324. |
| Auton, C A, Entwisle, D C, and Golledge, N R. 2001. Dounreay catchment Quaternary Characterisation study: final interpretation report. British Geological Survey commissioned Report CR/01/116. 122pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S116
|
