Igneous Rocks of South-West England

Details are given of the lavas, granites, and associated rocks of Devon and Cornwall which were formed throughout a mountain-building episode, between 405-270 million years ago.

Information. Introduction and site synthesis. Geological framework. The regional setting - Variscan orogen. The local setting - Rhenohercynian zone of south-west England. Devonian volcanic activity. Lizard and west Cornwall region; Central south-west England region. Carboniferous volcanic activity. Carboniferous-Permian plutonic activity. Post-orogenic volcanic activity. Lamprophyre suite; Exeter Volcanic 'Series'; Rhyolitic lava group. Group A sites - Lizard and Start complexes. List of sites. Lithological and chemical variation. Lizard Point; Kennack Sands; Polbarrow - The Balk; Kynance Cove; Coverack Cove - Dolor Point; Porthoustock Point; Porthallow Cove - Porthkerris Cove; Lankidden; Mullion Island; Elender Cove - Black Cove; Prawle Point. Group B sites - Pre-orogenic volcanics List of sites. Lithological and chemical variation. Porthleven; Cudden Point - Prussia Cove; Penlee Point; Carrick Du - Clodgy Point; Gurnards Head; Botallack Head - Porth Ledden; Tater-du; Pentire Point - Rumps Point; Chipley quarries; Dinas Head - Trevose Head; Trevone Bay; Clicker Tor quarry; Polyphant; Tintagel Head - Bossiney Haven; Brent Tor; Greystone quarry; Pitts Cleave quarry; Trusham quarry; Ryecroft quarry. Group C Sites - Cornubian granite batholith. List of sites. Lithological and chemical variation. Haytor Rocks area; Birch Tor; De Lank quarries; Luxulyan quarry; Leusdon Common; Burrator quarries; Rinsey Cove (Porthcew); Cape Cornwall area; Porthmeor Cove; Wheal Martyn; Carn Grey Rock and quarry; Tregargus quarries; St Mewan Beacon; Roche Rock; Megiliggar Rocks; Meldon Aplite quarries; Praa Sands (Folly Rocks); Cameron (Beacon) quarry; Cligga Head area. Group D sites - Post-orogenic volcanics. List of sites. Lithological and chemical variation. Kingsand beach; Webberton Cross quarry; Postbury Clump quarry; Hannaborough quarry; Killerton Park.