Extended Data Fig. 1: Spatial distribution and fracture orientation of broken crystals within one pyroclast.
From: Fracturing and healing of basaltic magmas during explosive volcanic eruptions
a, Bi-dimensional fracture number density (number of fractures per mm2, in red), and percent of plagioclase crystal fragments over the total number of plagioclase crystals (fragments plus unbroken, in black) within the individual images of the mosaic. Note the higher fracture density and percent of broken crystals along the margins of the particle despite uniform crystallinity all through the clast. b, Direction of extension (parallel to red dash) for broken crystal with extensional features (see, for example, Fig. 1k). No preferred orientation is visible. In the inset, the mosaic of the whole pyroclast, with the outline of the investigated area marked in white.
