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The primary crescumulates of the Lizard peridotite, Cornwall

Published online by Cambridge University Press:  01 May 2009

A. T. V. Rothstein
A. T. V. Rothstein
Affiliation:
Department of Geology, Portsmouth Polytechnic, Burnaby Road, Portsmouth PO1 3QL, Hampshire, England
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Summary

Preserved in the deformed peridotites of the Lizard, Cornwall, are relics of intricate primary precipitates of olivine. The mineral compositions of those rocks with an abundance of primary relics are typical of the primary assemblage Lizard peridotite. In detail the olivine primary structures resemble, but are not identical to, the crescumulates described from various layered ultrabasic intrusions. The available evidence shows distinctive specific features in the Lizard crescumulates in the scale and morphology of the structures and in the conditions of growth.

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Articles
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Geological Magazine , Volume 118 , Issue 5 , September 1981 , pp. 491 - 500
Copyright
Copyright © Cambridge University Press 1981

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