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Geochemistry of the Darwin Glacier region granitoids, southern Victoria Land

Published online by Cambridge University Press:  28 January 2003

A.L. SIMPSON  and
A.F. COOPER
A.L. SIMPSON
Affiliation:
Department of Geology, University of Otago, PO Box 56, Dunedin, New Zealand current address: Department of Earth Sciences, University of Queensland, Brisbane, QLD 4072, Australia
A.F. COOPER
Affiliation:
Department of Geology, University of Otago, PO Box 56, Dunedin, New Zealand
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Abstract

The Darwin Glacier region is located between the Carlyon and Darwin glaciers in southern Victoria Land, Antarctica (Fig. 1). Previous work on Ross Orogeny granitoids of the Darwin Glacier region is mutually conflicting. Haskell et al. (1965) mapped three plutons, the Carlyon Granodiorite, Mount Rich Granite and Hope Granite, Felder & Faure (1990) did not recognise the Hope Granite, and Encarnación & Grunow (1996) interpreted the entire area as underlain by a single intrusion, the Brown Hills pluton. Fieldwork during the 2000 field season and subsequent geochemical and geochronological analysis described here indicates the presence of three distinctive granitic suites, emplaced during Cambrian times. These include the Foggy Dog Granite (FDG) suite, the Darwin calcic suite and the Cooper Granodiorite.

Type
Short Note
Information
Antarctic Science , Volume 14 , Issue 4 , December 2002 , pp. 425 - 426
Copyright
© Antarctic Science Ltd 2002

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