Volcanology dictionary by Futura-Sciences

Alphabetical index

Andesite Andesite is volcanic rock with a microlithic fluid-like ...	Andesitic Andesitic volcanism is explosive, causing viscous lava ...
Aplite Aplite is very fine-grained, light coloured granite rock ...	Basaltic Basaltic volcanism is effusive (there are flows), due to a ...
Bomb A bomb is a more or less viscous lava fragment of a diameter ...	Caldera Caldera is a word of Portuguese origin meaning cauldron, ...
Contact metamorphism Contact metamorphism is metamorphism occurring around ...	Crater A crater is a depression generally located at the summit of ...
Dyke A dyke (or dike) is a sheet of igneous rock that has ...	Eruption An eruption is a period of volcanic activity during which ...
Etna Etna is the most active volcano in Europe, and one of the ...	Fissure A fissure is any fracture in a coastal ice floe, a ...
Fumaroles Fumaroles are open fissures through which volcanic gases ...	Geyser A geyser is a hot spring in volcanic fields gushing at ...
Hot spring Hot springs are linked to volcanic activity and their water ...	Hyaloclastites The term hyaloclastite covers a wide variety of rocks ...
Intrusion An intrusion is an igneous rock formation occurring at ...	Island arc An island arc is a collection of islands, most being ...
Lahar Lahar is a term of Indonesian origin denoting mud slides ...	Lapilli Lapilli are volcanic projections of a size between 2 and 64 ...