Computer Code: |
COEDC |
Preferred Map Code: |
notEntered |
Status Code: |
Full |
Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
Lithological Description: |
Biotite, sillimanite and garnet-bearing pelitic, semipelitic, quartzo-feldspathic gneiss. Mafic gneiss occurs locally as pods within quartzo-feldspathic gneiss. |
Definition of Lower Boundary: |
Tectonic contacts / unknown. |
Definition of Upper Boundary: |
Unconformably overlain by Ordovician rocks, eg. Cemaes Group (CMES) and Llyn Alaw Group (ALAW) rocks. |
Thickness: |
none recorded or not applicable
|
Geographical Limits: |
Anglesey. |
Parent Unit: |
Mona Gneiss Suite (NMG)
|
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 |