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Rb-Sr and U-Pb isotopic ages of granites in the central Transantarctic Mountains

Published online by Cambridge University Press:  01 May 2009

J. Gunner  and
J. M. Mattinson
J. Gunner
Affiliation:
Geology SectionCambridgeshire College of Arts & TechnologyCollier Road, Cambridge
J. M. Mattinson
Affiliation:
Dept. of Geological SciencesUniversity of CaliforniaSanta Barbara, California 93106.
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Summary

Granitic rocks in the central Transantarctic Mountains were emplaced and crystallized during the Early Ordovician Period, as indicated by Rb-Sr whole-rock isochron dates (488 and 463 Ma) and a concordant U-Pb date on sphene (476 Ma). Other U-Pb data provide evidence for an old inherited component of zircon in the granites.

Type
Articles
Information
Geological Magazine , Volume 112 , Issue 1 , January 1975 , pp. 25 - 31
Copyright
Copyright © Cambridge University Press 1975

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