Fig. 4From: Mapping of stones and their deterioration forms: the Clock Tower, Venice (Italy)Crack and deformation: a fractures on a pillar base (southern façade), and b on the marble slabs decorating the doorframe arch (eastern façade); c faint convex deformation on marble slabs (western façade); d lesene deformation (southern façade). Detachment: e blistering phenomena (southern façade); f sugaring phenomena on marble slabs (western façade)Back to article page