Supervolcanoes evolve superquickly

Supervolcanoes evolve superquickly

Huge underground magma chambers appear and erupt within just several hundred years

By Alexandra Witze, 11:58 AM June 15, 2012

The biggest eruptions on Earth may happen faster than volcanologists had thought. Giant blobs of magma appear underground and then pour onto the surface within centuries, suggests a new study of a California supereruption.

If the work holds true for other volcanoes, it means the most powerful eruptions don’t have magma chambers beneath them for very long. So if big changes start happening, like the ground rising or new geysers spouting, volcanologists might expect an eruption sooner rather tha...

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