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Early Tertiary volcanic rocks on the Agulhas Bank, South African Continental Shelf

Published online by Cambridge University Press:  01 May 2009

R. V. Dingle  and
R. I. Gentle
R. V. Dingle
Affiliation:
Marine Geology Section, Institute of Oceanography, University of Capetown, Rondebosch, S. Africa
R. I. Gentle
Affiliation:
Marine Geology Section, Institute of Oceanography, University of Capetown, Rondebosch, S. Africa
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Summary

Tuffs, trachybasalts, aegirine–augite trachytes and aegirine–augite phonolitic trachytes occur on the continental shelf at the southern tip of Africa. They have been radiometrically dated at 58(±2.4) million years (Palaeocene), and together with other alkali-rich basic intrusions onshore form the Alphard Tertiary Igneous Province. Both onshore and offshore sites of intrusion appear to be strongly tectonically controlled.

Type
Research Article
Information
Geological Magazine , Volume 109 , Issue 2 , March 1972 , pp. 127 - 136
Copyright
Copyright © Cambridge University Press 1972

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References

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