| Computer Code: |
PENMY |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
| Lithological Description: |
Strongly schistose semipelite and subsidiary psammite, interlayered with lenticular units of crossite and lawsonite-bearing metamafic rock (blueschist / glaucophane schist) and lenticular units of green amphibole-bearing metamafic rock. |
| Definition of Lower Boundary: |
Tectonic contact. |
| Definition of Upper Boundary: |
Tectonic contact - thrust with Pen-y-Parc Formation (PENYP). In part unconformably overlain by Ordovician rocks, e.g. Llyn Alaw Group (ALAW). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Anglesey. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
Central Anglesey Shear Zone
(CASZ)
|
| 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 |
