| Computer Code: |
AILL |
Preferred Map Code: |
AIL |
| Status Code: |
Full |
| Age range: |
Anglian Stage (QA)
— Wolstonian Stage (QO) |
| Lithological Description: |
Compact, very poorly sorted, clast-supported, matrix-rich diamicton formed of angular fragments of weathered psammite (locally granite or porphyry) to boulder size in a yellow-brown or orange, commonly ferruginous, matrix of silty sand. |
| Definition of Lower Boundary: |
Unconformable on bedrock. |
| Definition of Upper Boundary: |
Sharp, unconformable, or gradational glacitectonic contact with Ardverikie Till Formation. |
| Thickness: |
5m |
| Geographical Limits: |
Central Grampian Mountains of Scotland. |
| Parent Unit: |
Central Grampian (Albion) Glacigenic Subgroup (CGAG)
|
| Previous Name(s): |
Ailleag Diamicton Member [Obsolete Name and Code: Use AILL]
(-2561)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
River cliff of the Feith Ghorm Ailleag, Gaick Plateau, exposing the full thickness of the unit. |
| Partial Type Section |
River cliff of the Feith Ghorm Ailleag, exposing the upper contact and overlying unit. |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S063
|
