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An essexitic sill at Mbalevuto, Viti Levu, Fiji

Published online by Cambridge University Press:  01 May 2009

H. Colley
H. Colley
Affiliation:
Mineral Resources Division, Fiji
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Summary

The Mbalevuto sill intrudes sedimentary rocks on the SW flank of Tavua volcano, Viti Levu, Fiji. It appears to have been intruded at shallow depth in a semi-molten state. The sill is of essexitic composition and petrochemical evidence suggests that magmas forming the sill and lavas of the Tavua volcano are consanguineous.

Type
Articles
Information
Geological Magazine , Volume 111 , Issue 4 , July 1974 , pp. 343 - 348
Copyright
Copyright © Cambridge University Press 1974

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References

Gill, J. B. 1970. Geochemistry of Viti Levu, Fiji and its evolution as an island arc. Contr. Miner. Petrol. 27, 179–203.CrossRefGoogle Scholar
Ibbotson, P. 1967. Petrology of the Tertiary caldera, Tavua Goldfield. Mem. geol. Surv. Fiji 3, 57 pp.Google Scholar
Rickard, M. J. 1963. The geology of Mbalevuto area. Bull. geol. Surv. Fiji. 11. 36 pp.Google Scholar
Thornton, C. P. & Tuttle, O. F. 1960. Chemistry of igneous rocks. I: Differentiation Index. Am. J. Sci. 258, 664–84.CrossRefGoogle Scholar