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The Granite—Diorite Complex of the Insch Igneous Mass, Aberdeenshire

Published online by Cambridge University Press:  01 May 2009

M. S. Sadashivaiah
M. S. Sadashivaiah
Affiliation:
Geology Department, Imperial College, London, S.W. 7.
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Abstract

A complex of granitic, syenitic, and dioritic rocks forms the western part of the Insch mass. All these rocks appear to be related, but they are later than, and have no direct connection with, the basic rocks forming the bulk of the Insch mass. The granitic and syenitic varieties are fairly uniform, but the dioritic types are variable rocks rich in xenoliths which are apparently derived from basic rocks. It is suggested that the diorites were formed by contamination of the magma producing the granitic and syenitic rocks.

Type
Articles
Information
Geological Magazine , Volume 91 , Issue 4 , August 1954 , pp. 286 - 292
Copyright
Copyright © Cambridge University Press 1954

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References

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