Talk:Ogwen Group

Geology Low‑importance

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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]