plural of volcanic bomb

(volcanology) A tephra, larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption.

A column of igneous rock formed by congelation of lava in the conduit of a volcano and later exposed by the removal of surrounding rocks.

A wind associated with a volcanic eruption, caused by the eruption or its convection currents over hot lava.

A natural glass produced by the cooling of molten lava, or a liquid fraction of it, too rapidly to permit crystallization.

plural of volcanic glass

(climatology) A reduction in global temperatures caused by volcanic ash and droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large particularly explosive volcanic eruption.

plural of volcanic winter

(geology) Fragments of pulverized rock, minerals and volcanic glass created during a volcanic eruption.

plural of volcanic wind