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New data on the composition of Caledonian granites

Published online by Cambridge University Press:  05 July 2018

A. Hall*
Affiliation:
Department of Geology, King's College, London WC 2R 2LS

Summary

New analyses are given of granites from 23 intrusions in Scotland, Ireland, and the Isle of Man. Together with existing analyses, these were used to measure the regional variation in composition of Caledonian granites by means of trend surface analysis. An explanation of the variation is presented that involves the production of magma by melting in the crust, at a depth determined by the geothermal gradient.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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