The BGS Lexicon of Named Rock Units — Result Details

Coedana Granite

Computer Code: COEDG Preferred Map Code: notEntered
Status Code: Index Level
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Porphyritic alkali-feldspar granite, commonly mylonitised.
Definition of Lower Boundary: Unknown.
Definition of Upper Boundary: Unknown.
Thickness: Unknown.
Geographical Limits: Anglesey, North Wales.
Parent Unit: Coedana Complex (COED)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Gwalchmai Quarry. 1km northwest of Gwalchmai village, Anglesey. Horak, J M and Gibbons, W. 2000. 
Reference(s):
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.). 
Horak, J M. 1993. The late Precambrian Coedana and Sarn Complexes, northwest Wales - a geochemical and petrological study. PhD thesis, University of Wales. 
Horak, J M and Gibbons, W. 2000. Anglesey and the Lleyn Peninsula (Llyn). 145-179 in Carney, J (editor), Precambrian rocks of England and Wales. Geological Consrvation Review Series, 20. [Peterborough: Joint Nature Conservation Committee.] 
Shackleton, R M. 1969. The Pre-Cambrian of North Wales. 1-22 in Wood, A (editor), The Pre-Cambrian and Lower Palaeozoic rocks of Wales. [Cardiff: University of Wales Press.] 
Shackleton, R M, 1954. The structure and succession of Anglesey and the Lleyn Peninsula. British Association for the Advancement of Science, Vol.11, p.106-108. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable