Ancient rocks provide new clues on how volcanoes caused "biggest mass extinction" ever

Sep 16th 2019 2:42am EDT

(Natural News) Volcanoes could have caused the worst mass extinction on Earth. According to researchers from the University of Cincinnati (UC) and the China University of Geosciences (CUG), the most reliable evidence for this outcome comes from a recent mercury discovery buried in layers of ancient rock. The event, known as the Permian-Triassic (P-T) extinction, took place 252 million years ago… […]

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