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The source of granitic gneisses and migmatites in the Antarctic peninsula: a combined U-Pb SHRIMP and laser ablation Hf isotope study of complex zircons

Flowerdew, M. J; Millar, Ian L; Vaughan, A.P.M.; Horstwood, M.S.A.; Fanning, Christopher


Zircons gneisses and migmatites collected from the Antarctic Peninsula have different core-rim hafnium isotope ratio relationships depending on whether evidence for zircon dissolution is present or absent. Two samples contain inherited zircon that is partially dissolved. In these samples, the 176Hf/177Hf rations of the inherited zircon and new magmatic zircon rims are, on average, indistinguishable and consistent with in situ melting. In such cases the hafnium isotopic composition of the melt...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Contributions to Mineralogy and Petrology
DOI: 10.1007/s00410-006-0091-6


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