| 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 |
| 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.[1] 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.[2]
- ^ Krabbendam, M.; Strachan, R.; Prave, T. (2022). "A new stratigraphic framework for the early Neoproterozoic successions of Scotland". Journal of the Geological Society. 179. doi:10.1144/jgs2021-054. hdl:10023/24155.
- ^ British Geological Survey. "Morar Group". BGS Lexicon of Named Rock Units. Retrieved 12 June 2024.