volcano

Some volcanoes, including Mount St. Helens in Washington state and Quizapu in Chile, have occasionally released slow, gentle lava flows even when their magma was rich in gas and considered highly explosive.

Watkins, a geochemist who specializes in the behavior of minerals at high temperature and pressure, used laboratory equipment capable of simulating the conditions found deep in the crust or beneath a volcano.

I feel like I’m doing a stair workout for gym class—if I was thrown into a volcano the period before.

A volcano in southern Japan erupted early Sunday sending a plume of ash and smoke into the sky and prompting a warning over ashfall.

Rock from the subducting plates turns to magma when it reaches the mantle, creating hot spots that, over millennia, melt through the crust and break through as lava, forming volcanoes.