Supervolcanoes once erupted on Mars

Giant eruptions billions of years ago left behind huge craters

By Meghan Rosen, 13:31 PM October 2, 2013

Lava-spewing supervolcanoes ripped through Mars’ dusty red surface billions of years ago, a new analysis suggests.

Scientists have identified Martian volcanoes before, but none as violently explosive as the ones Joseph Michalski of the Planetary Science Institute in Tucson and Jacob Bleacher of the NASA Goddard Space Flight Center in Greenbelt, Md., report in the Oct. 3 Nature. “What we’re looking at is a very different beast,” says Bleacher.

When supervolcanoes erupt, they blow their lids comp...

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