Zircon saturation extraction temperatures calculated from the calibrations of Boehnke et al. (2013) (top) and Watson & Harrison (1983) (middle). Symbology as in Figure 5. Two samples that gave extremely low and high values are not shown. Although the absolute temperature values are different, both geothermometers give a similar bimodal temperature distribution, generally correlated with rhyolite endmember. There is a positive correlation between extraction temperature and extraction pressure. Samples with higher crystal contents are more likely to have zircon inheritance, hence the temperatures are maxima.