The BGS Lexicon of Named Rock Units — Result Details

Aberdaron Bay Group [Obsolete Name And Code: Use NFR]

Computer Code: ABB Preferred Map Code: AbB
Status Code: Index Level
Age range: Arenig Series (OR) — Abereiddian Stage (O2)
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): Nant Ffrancon Subgroup
Stratotypes:
none recorded or not applicable
Reference(s):
Gibbons W and McCarroll D. 1993. Geology of the country around Aberdaron, including Bardsey Island. Memoir of the British Geological Survey, Sheet 133 (England and Wales). (London: H.M.S.O.). 88pp. 
Rushton, A W A and Howells, M F. 1998. Stratigraphical framework for the Ordovician of Snowdonia and the Lleyn Peninsula. British Geological Survey Research Report, RR/99/08. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable