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Chemical and Mineralogical Changes Associated with the Laxfordian Metamorphism of Dolerite Dykes in the Scourie-Loch Laxford Area, Sutherland, Scotland

Published online by Cambridge University Press:  01 May 2009

D. J. Burns
D. J. Burns
Affiliation:
7 John's Mall, Birr, Co. Offaly, Eire.
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Abstract

Chemical analyses of dolerites and metadolerites from the Scourie-Loch Laxford area have been made, together with analyses of amphiboles and a pyroxene from these rocks.

Chemical variation within the dykes as originally emplaced has been investigated. Introduction of material during metamorphism is limited, only potassium showing a marked increase in concentration. In the least-altered dykes a relationship between degree of clouding in felspar and amount of H2O+ present is indicated.

Chemical analyses and optical properties of amphiboles show no distinctive trends which could be associated with the progress of the metamorphism.

Type
Articles
Information
Geological Magazine , Volume 103 , Issue 1 , February 1966 , pp. 19 - 35
Copyright
Copyright © Cambridge University Press 1966

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References

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