From Wikipedia, the free encyclopedia

The thickness of the group is unclear - it is put at c1000m (Pwllheli) on the BGS lexicon of rock names but its subgroup the Nant Ffrancon is cited there as being >2km - must vary from place to place, as might be expected. Geopersona ( talk) 07:45, 6 June 2020 (UTC) reply

From Wikipedia, the free encyclopedia

The thickness of the group is unclear - it is put at c1000m (Pwllheli) on the BGS lexicon of rock names but its subgroup the Nant Ffrancon is cited there as being >2km - must vary from place to place, as might be expected. Geopersona ( talk) 07:45, 6 June 2020 (UTC) reply


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