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Global Warming Led To Permian Extinction

Volcanic eruptions in Siberia 251 million years ago may have started a cascade of events leading to high hydrogen sulfide levels in the oceans and atmosphere and precipitating the largest mass extinction in Earth’s history, according to a Penn State geoscientist.

“The recent dating of the Siberian trap volcanoes to be contemporaneous with the end-Permian extinction suggests that they were the trigger for the environmental events that caused the extinctions,” says Dr. Lee R. Kump, professor of geosciences. “But the warming caused by these volcanoes through carbon dioxide emissions would not be large enough to cause mass extinctions by itself.”

Read the original article at: TerraDaily

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