Loch Ness Supergroup

Loch Ness Supergroup
Stratigraphic range: 900–850 Ma
Vertically banded rocks of the Glenfinnan Group
TypeGeological supergroup
Sub-unitsLoch Eil Group, Glenfinnan Group, Badenoch Group
UnderliesDalradian Supergroup
OverliesWester Ross Supergroup with tectonic contact
AreaNorthwestern Scotland
Thickness6–9 km
Lithology
PrimarySemi-pelite, Pelite, Psammite
OtherQuartzite
Type section
Named forLoch Ness

The Loch Ness Supergroup is one of the subdivisions of the Neoproterozoic sequence of sedimentary rocks (or their metamorphic equivalents) in the Scottish Highlands.[1] It is found everywhere in tectonic contact above the older Wester Ross Supergroup. It is thought to be unconformably overlain by the Cryogenian to Cambrian Dalradian Supergroup.[2]

  1. ^ British Geological Survey. "Loch Ness Supergroup". BGS Lexicon of named rock units. Retrieved 31 May 2024.
  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.