The Petrology and Origin of the Tertiary Lundy Granite (Bristol Channel, UK)

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Abstract
The British Tertiary Volcanic Province (BTVP) comprises within-plate central igneous complexes associated with plateau lavas and regional dyke swarms. Lundy is the southernmost complex of the BTVP and comprises granite (˜90%) emplaced into deformed Devonian sedimentary rocks within the Hercynian Cornubian granite province of southwest England. The complex is intruded by a northwest-southeast trending dyke swarm. In common with other BTVP igneous complexes, Lundy is associated with positive gravity and magnetic anomalies which are interpreted in terms of the presena of an underlying basic intrusion at shallow depth, with a volume exceeding that of the overlying granite.

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