Steam rises off the Grand Prismatic Spring, one of the most stunning hydrothermal features in Yellowstone National Park.
Steam rises off the Grand Prismatic Spring, one of the most stunning hydrothermal features in Yellowstone National Park.Photograph by Tom Murphy, National Geographic Creative
supervolcano underneath Yellowstone erupts again, we may have far less advance warning time than we thought.
After analyzing minerals in fossilized ash from the most recent mega-eruption, researchers at
Arizona State University think the supervolcano last woke up after two influxes of fresh magma flowed into the reservoir below the caldera.
And in an unsettling twist, the minerals revealed that the critical changes in temperature and composition built up in a matter of decades. Until now, geologists had thought it would take centuries for the supervolcano to make that...Read details...
If the supervolcano underneath America's first national park erupts again, we may have far less advance warning time than we thought.
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