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Inter-element fractionation of highly siderophile elements in the Tonga Arc due to flux melting of a depleted source

Dale, Christopher; Macpherson, Colin, G.; Pearson, D. Graham; Hammond, Samantha; Arculus, Richard


Highly siderophile element concentrations (HSEs: Os, Ir, Ru, Pt, Pd, and Re) have been determined for a suite of fresh, submarine mafic lavas from the northern Tonga Arc front and the nascent backarc Fonualei Spreading Centre (FSC). Prior melt depletion of the Tongan mantle wedge combined with a high degree of fluid fluxed melting is thought to have produced boninitic magmas at several arc and FSC locations. As such, this arc system provides an opportunity to assess the fluid mobility of HSEs...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Geochimica et Cosmochimica Acta Supplement
DOI: 10.1016/j.gca.2012.03.025


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