| Computer Code: |
MABP |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Tonian Period (AT)
— Tonian Period (AT) |
| Lithological Description: |
Semipelite and pelite, alternated with psammite, very locally with metaconglomerate. Normally highly strained and commonly gneissose; abundant quartz veins. |
| Definition of Lower Boundary: |
Unconformable upon Lewisian Gneiss inlier (L); unconformity normally highly sheared. |
| Definition of Upper Boundary: |
Conformably overlain by the Lower Morar Psammite Formation (GLPS). |
| Thickness: |
C. 0-100 m (estimate; strongly deformed). |
| Geographical Limits: |
NW Highlands: Ardnamurchan, Morar, Knoydart, Kintail. |
| Parent Unit: |
Morar Group (MORR)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Ramsay, J.G. and Spring, J., 1962. Moine stratigraphy in the Western Highlands of Scotland. Proceedings of the Geological Association, 73: 295-326. |
| Krabbendam, M. 2021. A stratigraphic framework for the early Neoproterozoic successions of the Northern Highlands of Scotland. UK Stratigraphic Framework Series. British Geological Survey Open Report, OR/21/072. 86pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S071
S082
S061
|
