Computer Code: |
NHQ |
Preferred Map Code: |
notEntered |
Status Code: |
Index Level |
Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
Lithological Description: |
Quartzite. |
Definition of Lower Boundary: |
none recorded or not applicable
|
Definition of Upper Boundary: |
none recorded or not applicable
|
Thickness: |
none recorded or not applicable
|
Geographical Limits: |
none recorded or not applicable
|
Parent Unit: |
Holyhead Formation (HHD)
|
Previous Name(s): |
Holyhead Quartzite Formation [Obsolete Name and Code: Use NHQ]
(-3579)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
none recorded or not applicable |
Reference(s): |
Phillips E. 1991. The lithostratigraphy, sedimentology and tectonic setting of the Monian Supergroup, western Anglesey, North Wales. Journal of the Geological Society, London, Vol. 148, 1079-1090. |
Greenly, E. 1919. Geology of Anglesey. Memoir of the Geological Survey, UK. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |