Journal article
Melt inclusion Pb-isotope analysis by LA-MC-ICPMS: Assessment of analytical performance and application to OIB genesis
B Paul, JD Woodhead, J Hergt, L Danyushevsky, T Kunihiro, E Nakamura
Chemical Geology | Published : 2011
Abstract
It is widely acknowledged that olivine-hosted melt inclusions retain compositional information unavailable from the study of bulk-rock samples alone. Whether or not the compositions of melt inclusions are truly representative of geologically significant melt bodies has, however, been called into question; isotopic data are critical to resolving this debate but the rare existing data are contradictory. Previous studies of Pb isotope ratios suggest that large compositional variations are preserved by melt inclusions whereas Sr isotope data apparently do not. A new and extensive laser ablation Pb-isotope database is presented here and displays a degree of isotopic heterogeneity in key samples f..
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Awarded by Australian Research Council
Funding Acknowledgements
This research was funded by the Australian Research Council through the ARC Centre of Excellence programme. JW's participation in the SO65 cruise to the Pitcairn Seamounts was supported by a German Research Ministry grant to P. Stoffers, University of Kiel. This study was also supported by the "Centre of Excellence for the 21st Century in Japan" programme of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) to E.N.