Hostname: page-component-7bb8b95d7b-2h6rp Total loading time: 0 Render date: 2024-09-18T05:09:04.615Z Has data issue: false hasContentIssue false
  • English
  • Français

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.
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Clough, C. T., 1907. In The Geological Structure of the North-West Highlands of Scotland. Mem. geol. Surv. U.K., p. 139.Google Scholar
MacGregor, A. G., 1931. Clouded felspars and thermal metamorphism. Miner. Mag., 22, 524–538.Google Scholar
Mercy, E. L. P., 1956. The accuracy and precision of rapid methods of silicate analysis. Geochim. et Cosmochim. Acta, 9, 161–173.Google Scholar
O'Hara, M. J., 1961. Petrology of the Scourie Dyke, Sutherland. Miner. Mag., 32, 848–865.Google Scholar
Shapiro, L., and Brannock, W. W., 1952. Rapid analysis of silicate rocks. U.S. geol. Surv. Circ., 165.Google Scholar
Sutton, J. and Watson, J., 1951. The Pre-Torridonian metamorphic history of the Loch Torridon and Scourie areas in the N.W. Highlands and its bearing on the chronological classification of the Lewisian. Quart. J. geol. Soc. Lond., 106, 241–296.CrossRefGoogle Scholar
Teall, J. J. H., 1885. The metamorphism of dolerite into hornblende-schist Quart. J. geol. Soc. Lond., 41, 133–144.Google Scholar
Teall, J. J. H., et al. 1907. The Geological Structure of the North-west Highlands of Scotland. Mem. geol. Surv. U.K.Google Scholar
Watson, J. V., 1949. Thesis submitted for Ph.D. degree, Univ. of London.Google Scholar