“…The pumice clast types identified in this study (Fig. 9; micro vesicular, tube, inflated and dense) could represent various dynamics of magma ascent and or the presence of vertical and horizontal magma gradients inside the conduit (Polacci, 2005;Dingwell et al, 2016;Davies et al, 2021). Horizontal zonation of ascent conditions of pumice clasts in volcanic conduits is illustrated based on development of horizontal gradients of the magma properties within the conduit (Polacci, 2005).…”