Volcanic and volcanoclastic rocks in the Crediton half-graben. Dartmoor Granite and mineralisation.
Differentiated granite, kaolinisation, tourmaline breccia and quartz-tourmaline rock.
Heritage and geology of the mining heartland. Mineral veins and greisen in coastal outcrops.
Granite sheets, contacts and aureole, massive quartz-tourmaline rock and tectonic relations in the host rocks.