Allen, P. M., and Jackson, Audrey A. 1985. Geological excursions in the Harlech dome. Classical areas of British geology, British Geological Survey. (London: Her Majesty's Stationery Office.) British Geological Survey Natural Environment Research Council
Geological excursions in the Harlech Dome: classical areas of British geology — contents
By P. M. Allen Audrey A. Jackson
Contents
Stratigraphy
Geological history
Geological structure
Mineralisation
Quaternary
3 Geological notes on popular walks
11 Roman Steps (Bwlch Tyddiad)
12 Drovers' Road, Llanbedr to Bontddu
16 Pont Dolgefeiliau to Gwynfynydd