The BGS Lexicon of Named Rock Units — Result Details

Portobello Formation

Computer Code: PBELO Preferred Map Code: notEntered
Status Code: Full
Age range: Floian Age (OFL) — Darriwilian Age (ODW)
Lithological Description: Interbedded thin turbidite mudstone, sandstone and laminated hemipelagic mudstone including a thin unit of burrow mottled turbidite mudstone and hemipalegic mudstone.
Definition of Lower Boundary: Lateral facies change with Capel Parc Formation (CAPC).
Definition of Upper Boundary: Tectonic: thrust over by Neoproterozoic units.
Thickness: none recorded or not applicable
Geographical Limits: Anglesey.
Parent Unit: Llyn Alaw Group (ALAW)
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