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High-Ca boninites from the active Tonga Arc

Cooper, Lauren; Plank, Terry; Arculus, Richard; Hauri, E.H.; Hall, Paul; Parman, Stephen


We report the first known occurrence of high-Ca boninites within an active submarine island arc, at Volcano A within the Tonga Arc. Both the whole rock and a population of melt inclusions (in Fo86-92 olivines) from a dredged satellite cone have compositions classified as high-Ca boninite. All samples from Volcano A, however, may be related to parental boninites, given the similarity in their rare earth element patterns and their coherency along a similar liquid line of descent. The primary...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Journal of Geophysical Research
DOI: 10.1029/2009JB006367


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