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Constraints on Hadean zircon protoliths from oxygen isotopes, Ti-thermometry, and rare earth elements

Trail, Dustin; Mojzsis, Stephen; Harrison, Timothy; Schmitt, Axel K; Watson, E B; Young, Edward D


We report zircon oxygen isotope ratios and reconnaissance Ti-in-zircon concentrations, guided by cathodoluminescence image studies, for detrital zircons up to 4.34 Ga from the Narryer Gneiss Complex of Western Australia. Zircon oxygen isotope results bolster the view that some Hadean (>3.85 Ga) zircon source melts were enriched in heavy oxygen, a sensitive proxy for melt contamination by sediments altered in liquid water. Zircon crystallization temperatures calculated from Ti concentration in...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Geochemistry, Geophysics, Geosystems. G3
DOI: 10.1029/2006GC001449


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