Fig. 1: Representative orthoslices and 3D renderings of pyroclasts.
From: Outgassing behaviour during highly explosive basaltic eruptions
Pyroclasts (a–c) FL_D_1, (d–f) MTL2_a0_1, (g–i) Etna122_C3_1, (j–l) Etna2013_1 and (m–o) Etna2001_1 are shown. Panels (b), (e), (h), (k) and (n) show renderings (voxel size = 0.9 µm), which focus on the matrix glass and crystals, whilst panels (c), (f), (i), (l) and (o) show renderings which focus on the segmented bubbles. All sample volumes are 3 mm3. The height of each cylinder is 1.35 mm and the diameter is 1.69 mm. There is a change in vesicle morphology from the spherical, smaller bubbles of crystal-poor clast FL_D_1, to the irregular, polylobate bubbles of crystal-rich clasts MTL2_a0_1 and Etna122_C3_1. The clast Etna2013_1 shows smaller vesicles with more irregular margins than clast FL_D_1, whilst clast Etna2001_1 shows the largest vesicles. Volume renderings were produced using VGStudio MAX 2.0. The renderings presented here are selected as representative examples of the pyroclasts analysed for these eruptions.
