| Computer Code: |
MESC |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Tonian Period (AT)
— Tonian Period (AT) |
| Lithological Description: |
Schistose semipelite, biotite-muscovite bearing (lower part). Upper part: schistose pelite, garnet-biotite-muscovite bearing, with local kyanite and staurolite. Minor micaceous, flaggy psammite. Quartz segregations occur. Strongly deformed and metamorphosed. |
| Definition of Lower Boundary: |
Unconformable upon Lewisian Gneiss inlier (L); unconformity highly sheared. |
| Definition of Upper Boundary: |
Conformably overlain by the Altnaharra Formation (ALPS). |
| Thickness: |
Apparent thickness c. 400 m; deformed. |
| Geographical Limits: |
Northern Highlands: Sutherland: Ben Loyal to Mudale. |
| 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): |
| 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. |
| Bird, A, Cutts, K, Strachan, R, Thirlwall, M F, and Hand, M. 2018. First evidence of Renlandian (c. 950-940 Ma) orogeny in mainland Scotland: Implications for the status of the Moine Supergroup and circum-North Atlantic correlations. Precambrian Research 305, 283-294. |
| Moorhouse, S, and Moorhouse, V E. 1988. The Moine Assemblage in Sutherland. In Winchester J A (ed). Later Proterozoic Stratigraphy of the Northern Atlantic Regions. Blackie, 54-73. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S108
S108
|
