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An erosional structure in a layered dolerite dyke, West Greenland

Published online by Cambridge University Press:  01 May 2009

H. R. Williams
H. R. Williams
Affiliation:
Department of Geology, Fourah Bay College, Freetown, Sierra Leone
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Summary

A vertical channel structure within a layered dolerite dyke resulted from differential magmatic flow. Layering in both dyke and channel is formed of more feldspathic dolerite attributed to fluctuations in water vapour pressure and supercooling during crystallization.

Type
Articles
Information
Geological Magazine , Volume 113 , Issue 1 , January 1976 , pp. 77 - 82
Copyright
Copyright © Cambridge University Press 1976

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References

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