The BGS Lexicon of Named Rock Units — Result Details

Iona Group

Computer Code: IONA Preferred Map Code: SYMB
Status Code: Pending Upgrade
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: none recorded or not applicable
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Not Entered (?)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Colonsay Group
Torridonian
Stratotypes:
none recorded or not applicable
Reference(s):
Muir, R J and three others, 1994. Precambrian rocks of the southern Inner Hebrides - Malinsea region: Colonsay, west Islay, Inishtrahull and Iona. In A revised correlation of Precambrian rocks in the British Isles. Gibbons, W and Harris, A L (editors). Special Report of the Geological Society of London, 22, 54-58. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S043