Firth, Chris; Adam, J.; Turner, Simon; Rushmer, Tracy; Brens, Raul; Green, Trevor H.; Erdmann, S; O'Neill, Hugh
Hydrous melting experiments on a basaltic andesite from Late Volcano in the Tonga Arc were conducted at 900–
1250 °C and 1 atm to 2.5 GPa, with a range of added H2O concentrations (0–9 wt%). These were used to constrain
conditions of phenocryst precipitation in the basaltic andesite and to better understand the processes of magmatic differentiation beneath Tongan volcanoes. Comparison between the products of experiments and
Tongan lavas indicates that basaltic andesites from Late...[Show more]
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