The BGS Lexicon of Named Rock Units — Result Details

Skerries Member

Computer Code: NK Preferred Map Code: notEntered
Status Code: Full
Age range: Tremadocian Age (OTR) — Floian Age (OFL)
Lithological Description: Massive or thick-bedded volcaniclastic meta sandstone.
Definition of Lower Boundary: Stratigraphic contact with Cemlyn Bay Formation.
Definition of Upper Boundary: Stratigraphic contact with Cemlyn Bay Formation.
Thickness: none recorded or not applicable
Geographical Limits: Anglesey, north Wales.
Parent Unit: Cemlyn Bay Formation (CEML)
Previous Name(s): Skerries Conglomerates (NKSC)
Skerries Grits (NKSG)
Skerries Group [Obsolete Name and Code: Use NK] (-421)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The Skerries, near Carmel Head, Anglesey. 
Reference(s):
Harris, A L and others, 1973. A correlation of the Pre-Cambrian rocks in the British Isles. Geological Society of London Special Report No 6. 
Greenly, E. 1919. The geology of Anglesey, Vol 1. Memoir of the Geological Survey of Great Britain (England and Wales). (London: H.M.S.O.). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable