The BGS Lexicon of Named Rock Units — Result Details

Porth Llauog Formation

Computer Code: PLA Preferred Map Code: PLa
Status Code: Pending Upgrade
Age range: Abereiddian Stage (O2) — Abereiddian Stage (O2)
Lithological Description: Dark mudstones with abundant debris flows.
Definition of Lower Boundary: Not defined.
Definition of Upper Boundary: Not defined.
Thickness: 500 metres.
Geographical Limits: 1:50 000 Sheet 209 (St. Davids).
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
none recorded or not applicable
Kokelaar, B P, Bevins, R E and Roach, R A. 1985. Submarine silicic volcanism and associated sedimentary and tectonic processes, Ramsey Island, south west Wales. Journal of the Geological Society of London, Vol.142 (4-6), 591-617. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: