| Computer Code: |
LBTI |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Grey (5Y 6/1) to reddish brown (2.5Y 5/6), overconsolidated, muddy and sandy diamicton, gravel to boulder grade, matrix to clast supported, with a strong subhorizontal clast fabric. |
| Definition of Lower Boundary: |
Unconformable boundary with bedrock. |
| Definition of Upper Boundary: |
Sharp contact with Assynt Glacigenic Formation. |
| Thickness: |
Up to 20m thick on Martin Bank (offshore); mostly <5m onshore. |
| Geographical Limits: |
Overlies bedrock onshore and offshore the Summer Isles region of Wester Ross. It is separated from The Minch by a wide zone of bedrock. |
| Parent Unit: |
Northwest Highlands Glacigenic Subgroup (NWHG)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Auchlunachan Burn, off unclassified road, 500 m SW of Inverbroom Lodge (Bradwell and Stoker, 2010). |
| Type Section |
Allt an t-Srathain burn, adjacent to unclassified road, about 500 m to the SE of Rhue (Stoker and Bradwell, in press). |
| Reference(s): |
| Stoker, M S and Bradwell, T. In press. Quaternary geology of the Summer Isles region - a brief explanation of the marine environment map. Sheet Explanation of the British Geological Survey. 1:50 000 Special Sheet Summer Isles (Scotland). |
| Stoker, M S, Bradwell, T, Howe, J A, Wilkinson, I P & McIntyre, K. 2009. Lateglacial ice-cap dynamics in NW Scotland: evidence from the fjords of the Summer Isles region. Quaternary Science Reviews, 28, 3161-3184. |
| Bradwell, T, and Stoker, M S. 2010. Quaternary Lithostratigraphy of the NW Highlands. 29-37 in The Quaternary of Western Sutherland and adjacent areas. Lukas, S, and Bradwell, T (editors). (London: Quaternary Research Association.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S101
|
