VHP Photo Glossary: bomb

Volcanic bombs erupted by Mauna Kea Volcano, Hawai`i

Photograph by J.P. Lockwood on July 10, 1982. These basaltic lava bombs were erupted by Mauna Kea Volcano, Hawai`i.


Volcanic bombs are lava fragments that were ejected while viscous (partially molten) and larger than 64 mm in diameter. Many acquire rounded aerodynamic shapes during their travel through the air. Volcanic bombs include breadcrust bombs, ribbon bombs, spindle bombs (with twisted ends), spheroidal bombs, and quot;cow-dungquot; bombs.

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