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A study of the space form of the Cornubian granite batholith and its application to detailed gravity surveys in Cornwall

By J.M.C. Tombs


A three-dimensional computer model of the Cornubian\ud granite batholith, defined by polygonal contours, was\ud created so that its calculated gravity field matched the\ud observed Bouguer Anomaly field, both onshore and offshore.\ud The model was used to define a background\ud (= “regional”) field in three areas where detailed gravity\ud surveys had been undertaken in the search for shallow\ud granite. From the residual field maps of de@h to granite\ud were produced by an iterative technique. Geological\ud interpretations of the batholith model and of the depth\ud maps are included

Publisher: Institute of Geological Sciences
Year: 1977
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