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Geology glossary

bomba a crosta di pane

Volcanology
Breadcrust bomb, ca. 50 cm long, from Lokon volcano (N-Sulawesi, Indonesia)
Breadcrust bomb, ca. 50 cm long, from Lokon volcano (N-Sulawesi, Indonesia)
Perfectly shaped breadcrust bomb from Nea Kameni, Santorini (Greece)
Perfectly shaped breadcrust bomb from Nea Kameni, Santorini (Greece)
Bomba vulcanica con una superficie di cracking, simile al pane, causata dalla lenta espansione delle bolle di gas interno durante il raffreddamento.
A breadcrust bomb is a volcanic bomb with a cracked and checkered surface, sometimes resembling the surface of a loaf of bread. The cracks develop when the outer surface of a partially molten lava fragment cools to form a brittle surface and then subsequently cracks as the hot interior expands due to the continued growth of gas bubbles.

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