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Multiple mantle plume components involved in the petrogenesis of subduction-related lavas from the northern termination of the Tonga Arc and northern Lau Basin: Evidence from the geochemistry of arc and backarc submarine volcanics

Falloon, Trevor; Danyushevsky, Leonid V.; Crawford, Anthony James; Maas, Roland; Woodhead, Jonathan; Eggins, Stephen; Bloomer, Sherman H; Wright, Dawn J; Zlobin, Sergei K; Stacey, Andrew R


We report new geochemical data for boninites and backarc basin-type basalts recovered from the northern termination of the Tonga trench and Lau Basin. Boninitic pillow lavas, ranging from high-Mg compositions to andesites and dacites, have been erupted within large submarine volcanic edifices (calderas and volcanoes) associated with active rifting of both the northern end of the Tofua volcanic arc and in a backarc position relative to the arc volcanoes on the northern Tonga Ridge. The mantle...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Geochemistry, Geophysics, Geosystems. G3
DOI: 10.1029/2007GC001619


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