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The origin of heteradcumulate and adcumulate textures in the Jimberlana Norite

Published online by Cambridge University Press:  01 May 2009

I. H. Campbell
I. H. Campbell
Affiliation:
54 Beatrice Road, Dalkeith, Western Australia, 6009.
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Summary

In the Jimberlana Norite the heteradcumulate and adcumulate rocks are found in adjacent layers. The heteradcumulate occur immediately before the heterad minerals appear as cumulus grains in an adcumulate rock. It is considered that both heteradcumulate and adcumulate textures result from supercooling in the magma. Heteradcumulates develop when seeds of the heterad mineral are not available in the magma and adcumulates after they have formed.

Type
Articles
Information
Geological Magazine , Volume 105 , Issue 4 , August 1968 , pp. 378 - 383
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

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