The BGS Lexicon of Named Rock Units — Result Details

Holy Island Group

Computer Code: NHI Preferred Map Code: notEntered
Status Code: Full
Age range: Furongian Epoch (EF) — Tremadocian Age (OTR)
Lithological Description: none recorded or not applicable
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: Unconformably overlain by Ordovician Rocks, eg. Cemaes Group (CMES).
Thickness: none recorded or not applicable
Geographical Limits: Anglesey.
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable