https://phys.org/news/2021-06-geochemical-end-permian-mass-extinction-event.html

UNE 21, 2021

by Heather Tate,Northern Arizona University

The most severe mass extinction event in the past 540 million years eliminated more than 90 percent of Earth’s marine species and 75 percent of terrestrial species. Although scientists had previously hypothesized that the end-Permian mass extinction, which took place 251 million years ago, was triggered by voluminous volcanic eruptions in a region of what is now Siberia, they were not able to explain the mechanism by which the eruptions resulted in the extinction of so many different species, both in the oceans and on land.

Associate professor Laura Wasylenki of Northern Arizona University’s School of Earth and Sustainability and Department of Chemistry and Biochemistry is co-author on a new paper inNature Communicationsentitled, “Nickelisotopeslink Siberian Traps aerosol particles to the end-Permian mass…