Letters to the Editor

19555

By Science News

- More than 2 years ago

Maybe there was a belch of hydrogen sulfide involved in the Permian extinctions. However, did it leave some geological trace, as did the vast Siberian outpourings of magma, both on land and in the sea, over the course of a million years during the period?

Stan Skirvin
Scottsdale, Ariz.

The ocean venting proposed by Lee Kump’s group at Pennsylvania State University doesn’t refute that major volcanic eruptions contributed to the Permian extinction.