QT Yellowstone Caldera (the eruptions of which can be violent enough to send a layer of ash six feet deep as far away as Chicago and which erupts every 600,000 or so years and last erupted 640,000 years ago) update

June 19, 2017 12:56 pm |


An “energetic sequence” of 30 earthquakes magnitude 2 and larger hit Yellowstone late last week as part of a sudden swarm of more than 230 quakes.
But scientists reassure us that this is “fairly normal.”

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