Noun
Volcanic power or action; volcanicity.
Source: Webster's dictionaryBefore an asteroid wiped out the dinosaurs, Earth experienced a short burst of intense volcanism." Source: Internet
Discovery of active volcanism on Io was easily the greatest unexpected discovery at Jupiter. Source: Internet
Famines have also been caused by volcanism. Source: Internet
Finally, Io, the innermost moon, has a sulfur surface, active volcanism and no sign of ice. Source: Internet
Geology Caldera The tectonic causes of the Long Valley volcanism are still largely unexplained and are therefore a matter of much ongoing research. Source: Internet
Greenhouse gas levels may also have been affected by other factors which have been proposed as causes of ice ages, such as the movement of continents and volcanism. Source: Internet