Geology and Scenery of Eryri (Snowdonia) - 18/08/2025

Snowdonia can truly be said to be a landscape shaped by the contrasting forces of fire and ice. We will visit rock exposures ranging in age from Pre-Cambrian to Upper Palaeozoic, set in some of the most spectacular scenery in Britain.Snowdonia can truly be said to be a landscape shaped by the contrasting forces of fire and ice. This geology course visits the site of a disappearing ocean and observes sediments laid down in an ocean basin. We will see lavas produced both on the sea bed and as a result of erupting volcanoes. Add to this the contortions caused by mountain building, widespread mineralisation and massive glaciation, and the diversity of Snowdonia’s geological past becomes apparent.

Tutor: David Cronshaw

David Cronshaw is a former Geology Tutor at Preston Montford Field Centre. He has led Geology courses for Field Studies Council for over 30 years to many areas of the UK including Shropshire, The Lake District and The Yorkshire Dales. He enjoys all aspects of Geology but is particularly interested in the impact that Geology has on the landscape around us and how rocks have been altered in the millions of years since they were formed. David undertook his PhD research on the Geology of Snowdonia. He has recently retired from teaching in a Lancashire School.