Toxic Vents (IMAGE)

Washington State University

Toxic Vents

Caption

WSU researchers sampled sulfur dioxide trapped in rock near lava vents to gauge how much gas was put in the air by massive basalt flows 16.5 million years ago. The inset map shows the extent of the flows, with the region in the black line showing the Wapshilla Ridge flow that emitted more than 200 billion tons of sulfur dioxide.

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WSU

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