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The Gneisses of the Bartica Assemblage, British Guiana

Published online by Cambridge University Press:  01 May 2009

R. T. Cannon
R. T. Cannon
Affiliation:
Geological Survey Department, P.O. Box, 789, Georgetown, British Guiana.
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Abstract

The results of an examination of one quarry within the gneisses of the Bartica Assemblage are described and the validity of these results throughout the whole of the Bartica Assemblage is discussed. The foliation and banding of the gneisses at Kereti Quarry are mainly the results of tectonism; concomitant metamorphism within the Amphibolite Facies was succeeded by a two-phase metasomatism involving successive additions of Na and K. These results appear valid throughout the Bartica Assemblage and it is further suggested that the main rock type distribution in the Bartica Assemblage is also controlled by tectonism.

Type
Articles
Information
Geological Magazine , Volume 99 , Issue 2 , April 1962 , pp. 164 - 172
Copyright
Copyright © Cambridge University Press 1962

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References

REFERENCES

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