Durness Group

The Durness Group is a geological group, a stratigraphic unit, formed mainly of dolomites of late Cambrian to early Ordovician age.[1] It outcrops along the full strike extent of the Moine Thrust Belt in the Northwest Highlands of Scotland. Within the thrust belt it is often affected by thrust faulting.

Durness Group
Stratigraphic range: Cambrian–Ordovician
Dolomites of the Durness Group with schists of the Moine Supergroup thrust over them on the Moine Thrust at Knockan Crag
Type	Group
Sub-units	Ghrudaidh Formation, Eilean Dubh Formation, Sailmhor Formation, Sangomore Formation, Balnakiel Formation, Croisaphuill Formation, Durine Formation
Underlies	Moine Supergroup along the Moine Thrust.
Overlies	An t-Sron Formation of the Ardvreck Group
Thickness	up to 750 m (2,460 ft)
Lithology
Primary	Dolomite
Other	Limestone, chert
Location
Region	Northwest Highlands
Country	Scotland
Type section
Named for	Durness