Fig. 2

Microtexture characteristics (SEM) of eruptive products formed by magma−slurry experiments and hydrovolcanism. a Experimental products formed by magma−water interaction showing quenching cracks (Büttner et al. 1999); b Analogue particle from a “wet” phreatomagmatic surge deposit of the La Fossa Volcano (Büttner et al. 1999); c Subrounded particle produced by the Molten Fuel Coolant Interaction experiment showing quenching cracks formed by the contact between hot fragments and liquid water (Büttner et al. 2002); d Surge deposit of the La Fossa Volcano of Palizzi area showing quenching cracks formed by the contact between hot fragments and liquid water (Büttner et al. 2002)