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Gases from ancient Inland Northwest volcanic eruptions blocked out sun, cooling planet


October 11, 2017

Washington State University researchers have determined that the Pacific Northwest was home to one of the Earth's largest known volcanic eruptions, a millennia-long spewing of sulfuric gas that blocked out the sun and cooled the planet. Only two other eruptions -- the basalt floods of the Siberian Traps and the Deccan Traps -- were larger, and they led to two of the Earth's great extinctions. Full Story

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Washington State University

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