| Computer Code: |
CEML |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Tremadocian Age (OTR)
— Floian Age (OFL) |
| Lithological Description: |
Chlorite-muscovite schist and phyllite, semipelite and subsidiary psammite, the latter may be volcaniclastic; locally metamorphosed calc-silicate rocks; locally sheet-like units of metamafic rock (amphibolite). |
| Definition of Lower Boundary: |
Mainly forming hangingwall to Hen Felin Thrust; in part overlying Porth yr Ysgraf Ophiolitic Formation (PYY). |
| Definition of Upper Boundary: |
Unconformably overlain by Ordovician age rocks, eg. Cemaes Group (CMES). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Anglesey. |
| Parent Unit: |
Llanfechell Group (LFEC)
|
| 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 |
