The BGS Lexicon of Named Rock Units — Result Details

Pen-Y-Parc Formation

Computer Code: PENYP Preferred Map Code: notEntered
Status Code: Full
Age range: Ediacaran Period (AD) — Ediacaran Period (AD)
Lithological Description: Strongly schistose semipelite interlayered with persistent to lenticular units of green amphibolite-bearing metabasite, thin units of pelite, quartzite and metalimestone.
Definition of Lower Boundary: Tectonic contact / thrust with Penmynydd Formation (PENMY).
Definition of Upper Boundary: Unconformably overlain by Llyn Alaw Group (ALAW).
Thickness: none recorded or not applicable
Geographical Limits: Anglesey.
Parent Unit: Not Applicable (-)
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