GA Guide Number 41
The rocks of the island are well displayed in coastal exposures, and the clean, wave polished surfaces are ideal for studying rock relationships and textures. The 9 itineraries cover most of the islands geology – metamorphic and igneous rocks, plutonic intrusions, etc. of the Cadomian Orogeny – in coastal sections. Emphasis is placed on safety (state of the tides) and whether the sites are RAMSAR (Wetland) sites with restrictions.