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High-potassium granites in the Masirah ophiolite of Oman

Published online by Cambridge University Press:  01 May 2009

I. L. Abbotts
I. L. Abbotts
Affiliation:
Department of Geological Sciences, Birmingham University, Edgbaston, West Midlands.
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Summary

Masirah Island lies off the SE coast of Oman and comprises a fully developed, though tectonically disturbed ophiolite, unconformably overlain by early Tertiary limestone. The ophiolite consists of harzburgites, cumulate gabbros, a sheeted dyke complex, and pillow lavas with sediment intercalations. Within the ophiolite occur granites the geochemistry of which, particularly their high K2O and Rb, and low Zr and Zr/Nb, ismore typical of a continental crust environment and suggests that at the time of their formation continental crust existed beneath or immediately W ofthe Masirah Ophiolite.

Type
Articles
Information
Geological Magazine , Volume 115 , Issue 6 , November 1978 , pp. 415 - 425
Copyright
Copyright © Cambridge University Press 1978

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