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Graeme K. Taylor
Pluton shapes in the Cornubian Batholith; new perspectives from gravity modelling
Journal of the Geological Society of London (May 2007), 164(3):525-528
Abstract: Index Terms/Descriptors: Latitude & Longitude:
GeoRef, Copyright 2008, American Geological Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Gravity modelling of the Dartmoor, Bodmin, St. Austell and Carnmenellis plutons of the Cornubian Batholith of SW England strongly supports a tabular form for the exposed granites. Modelled thicknesses for the individual bodies, with the exception of Dartmoor, are consistent with those derived from empirical relationships for plutons and laccoliths. In the case of the Dartmoor, Bodmin and St. Austell plutons the deepest parts are located near their southern margins, suggesting a steep conduit with northerly and outward direct flows. Modelling of the Carnmenellis granite suggests a more centrally located feeder. In the case of Dartmoor, at least, the granite appears to have exploited the Devonian-Carboniferous interface during its emplacement.
aureoles; batholiths; Bodmin Granite; Bouguer anomalies; Carnmenellis Granite; Cornubian Batholith; Dartmoor Granite; emplacement; England; Europe; fabric; foliation; geometry; geophysical methods; granites; gravity anomalies; gravity methods; Great Britain; igneous rocks; intrusions; laccoliths; lineation; magnetic susceptibility; models; plutonic rocks; plutons; Saint Austell Granite; sills; thickness; United Kingdom; Western Europe
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