| Computer Code: |
BCTI |
Preferred Map Code: |
bct |
| Status Code: |
Full |
| Age range: |
Anglian Stage (QA)
— Wolstonian Stage (QO) |
| Lithological Description: |
Diamicton, clayey, sandy, gravelly, dark yellowish brown to orangey brown. Containing much decomposed calc-silicate rock and clasts of quartzite, psammite, gabbro and probable Triassic sandstone. |
| Definition of Lower Boundary: |
Unconformable on bedrock, commonly decomposed. |
| Definition of Upper Boundary: |
Unconformable contact with Old Hythe Till Formation or glacitectonic contact with Whitehills Glacigenic Formation. |
| Thickness: |
>5m |
| Geographical Limits: |
Scotland sheet 96 (Portsoy). |
| Parent Unit: |
Central Grampian (Albion) Glacigenic Subgroup (CGAG)
|
| Previous Name(s): |
Unit 1 [Obsolete Name and Code: Use BCTI]
(-1334)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Sections in western side of the Boyne Limestone Quarry. Peacock and Merritt, 2000. |
| Reference(s): |
| Peacock, J D, 1966. Note on the drift sequence near Portsoy, Banffshire. Scottish Journal of Geology, Vol.2, 35-37. |
| Peacock, J D and Merritt, J W. 2000. Glacial deposits at the Boyne Bay Limestone Quarry, Portsoy and their place in the late Pleistocene history of northeast Scotland. Journal of Quaternary Science. Vol.15, 543-555. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S096
|
