Will the Yellowstone supervolcano blot out the sun?

Around 630,000 years ago, the Yellowstone supervolcano produced two huge eruptions in relatively quick succession which were so powerful that they fundamentally altered the global climate, according to new research.

The last catastrophic eruption at the site, which formed the vast Yellowstone caldera – a large crater formed by the collapse of a volcano into itself – was thought to have been a single event.

However, researchers have found evidence of two separate layers of volcanic ash bearing the chemical fingerprint of the super eruption in seafloor sediments off the coast of Southern California.

Full Story: http://www.ibtimes.co.uk/will-yellowstone-supervolcano-blot-out-sun-1644686

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