Page 231 - Caldera Volcanism Analysis, Modelling and Response

206 W.U. Mueller et al.

Figure 7 (A--B) Detailed facies analysis of western and (C--D) central segments of the
Normetal caldera. Note lateral £ow changes from massive to lobate to brecciated (labelled
a--b--c) in rhyolite as well as lateral changes from massive to pillow to pillow breccia (labelled
a--b--c) in the basaltic andesite.Volcanic facies organisation is used to indicate a principal £ow
component (modi¢ed from Lafrance et al., 2000, with permission from Elsevier).