Earthquake swarm is near the middle of the caldera. Yellowstone Earthquake Swarm Puzzles Scientists. By LiveScience Staff The earthquake swarm begin Dec. 27. The strongest quake has been a 3.9 […]
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Earthquake swarm is near the middle of the caldera. Yellowstone Earthquake Swarm Puzzles Scientists. By LiveScience Staff The earthquake swarm begin Dec. 27. The strongest quake has been a 3.9 […]