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A Note on the Dunite (Peridotite) Mylonites of St. Paul's Rocks (Atlantic)

Published online by Cambridge University Press:  01 May 2009

C. E. Tilley
C. E. Tilley
Affiliation:
Department of Mineralogy and Petrology, Downing Place, Cambridge.
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Extract

The mylonitic character of the peridotites of St. Paul's Rocks on the Mid-Atlantic Ridge was reported in a contribution by the writer (Tilley, 1947), these ultrabasics then being referred to as dunite or peridotite mylonites. The available chemical analytical data were assembled in that paper and a new analysis provided of a two-pyroxene representative. The type carrying porphyroclastic amphibole was represented by an analysis by Washington (1930) but it was shown that this analysis erred in its alkali determination, and that the reported occurrence of jadeite could not be confirmed.

Type
Articles
Information
Geological Magazine , Volume 103 , Issue 2 , April 1966 , pp. 120 - 123
Copyright
Copyright © Cambridge University Press 1966

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References

REFERENCES

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