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The breaking of magma

Published online by Cambridge University Press:  01 May 2009

G. P. L. Walker
G. P. L. Walker
Affiliation:
Department of Geology, Imperial College, London, S.W.7
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Summary

Breadcrust blocks (bombs) on Vulcano, Sicily, show features which indicate that when they were of viscous lava they broke when stress was applied rapidly, and later flowed when it was applied slowly. If the magma of granitic intrusions behaves similarly, the perplexing “relict dykes” can be explained as due to the breaking of the magma and the injection of dykes into the fractures.

Type
Articles
Information
Geological Magazine , Volume 106 , Issue 2 , 20 April 1969 , pp. 166 - 173
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Bernauer, F. 1931. Zur Kenntnis der Brotkrustenbomben von Vulcano. Neues Jb. Miner. Geol. Paläont., 64, 629–648.Google Scholar
Goodspeed, G. E. 1948. Xenoliths and skialiths. Am. J. Sci., 246, 515–525.CrossRefGoogle Scholar
Goodspeed, G. E. 1955. Relict dikes and relict pseudodikes. Am. J. Sci., 253, 146–161.CrossRefGoogle Scholar
Miller, W. J. 1945. Observations on pseudo-dikes and foliated dikes. J. Geol., 53, 175–190.CrossRefGoogle Scholar
Pitcher, W. S., & Read, H. H. 1960. Early transverse dykes in the Main Donegal Granite. Geol. Mag., 97, 53–61.CrossRefGoogle Scholar
Roddick, J. A., & Armstrong, J. E. 1959. Relict dikes in the Coast Mountains near Vancouver, B.C. J. Geol., 67, 603–613.CrossRefGoogle Scholar
Silvestri, O., & Mercalli, G. 1891. Le eruzione dell'isola di Vulcano 1888–90. Ann. Uff. Centr. Met. Geod. Ital., 10, pt. 4a.Google Scholar
Watterson, J. 1965. Plutonic development of the Ilordleq area, South Greenland. Medd. Grønland, 172, no. 7.Google Scholar