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Yellowstone Supervolcano Eruptions Even Bigger Than Originally Thought

schwit1 writes: A recent study published in the Geological Society of America Bulletin identifies an area of great volcanic activity along the Snake River Plain between Oregon and Yellowstone. While scientists have long known that the supervolcano now under Yellowstone left a trail of mega-eruptions across the Pacific Northwest, an international research team has found evidence of only 12 distinct eruptions, contradicting earlier theories that the eruptions were more numerous and less extreme.

“The size and magnitude of this newly defined eruption is as large, if not larger, than better known eruptions at Yellowstone,” said the study’s lead author, Dr. Thomas Knott, in a University of Leicester press release, “and it is just the first in an emerging record of newly discovered super-eruptions during a period of intense magmatic activity between 8 and 12 million years ago.”


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