Researchers recently discovered a huge chain of extinct volcanoes buried deep below South China that formed when two tectonic ...

More than half of the world’s critical mineral resources formed in ancient volcanic systems. When exploring for mineral ...

They form when a combination of mud, fluids and gases erupt at the Earth’s surface. The term “volcano” is borrowed from the much better known world of igneous volcanoes, where molten rock ...

Super-volcanoes have probably caused more extinctions than asteroids. Vanderbilt University researchers say such volcanoes could form fairly quickly, in a few hundred years, and erupt without notice.

Volcanoes with irregular or more elliptical openings didn’t typically form rings. When they did, these apertures warped the doughnut shape or caused the ring to wobble, the team reported.

Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise. By Pablo Fonseca Q. / Knowable Magazine ...