Morar Group
| Morar Group | |
|---|---|
| Stratigraphic range: 1000–950 Ma | |
Folded Morar Schist of the Morar Group, in Glen Meadail near Inverie in Knoydart | |
| Type | Geological group |
| Unit of | Wester Ross Supergroup |
| Underlies | Glenfinnan Group (tectonic contact) |
| Overlies | Lewisian complex |
| Thickness | up to 9,000 metres (29,530 ft) |
| Lithology | |
| Primary | Psammite, semi-pelite, pelite |
| Other | Conglomerate, breccia |
| Location | |
| Country | Scotland |
| Type section | |
| Named for | Morar |
The Morar Group is a sequence of Tonian (lower Neoproterozoic) sedimentary rocks that have been subjected to a series of tectonic and metamorphic events since their deposition. Originally interpreted to be lowest (oldest) part of a "Moine Supergroup", this sequence now forms part of the Wester Ross Supergroup. They lie unconformably on Archean to Paleoproterozoic basement of the Lewisian complex. The contact with the overlying Glenfinnan Group of the Loch Ness Supergroup is everywhere a tectonic one, formed by the Sgurr Beag Thrust or related structures.