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 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. |
Peacock, J D, 1966. Note on the drift sequence near Portsoy, Banffshire. Scottish Journal of Geology, Vol.2, 35-37. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
S096
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