Distance above the deepest sample plotted as a function of mass loss calculated for each SMB sample. The vertical line indicating no melt loss corresponds to samples whose Sr concentrations are equivalent to that listed in Table 2 (assumed parental magma composition). The values on the left hand side of the x-axis were calculated by solving for total melt loss, MLF, while values on the right hand side of the x-axis were calculated by solving for total crystal loss, MCLF. Sample symbols here are identical to Fig. 4 and 5.