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> 1 About the effect of selenium I red:
I think that's the wrong question. First we should ask: Is there selenium in
the boundary layer? And: When did the Deccan eruptions happen? Answers:
Selenium seems to be present only at background levels; and, the massive
eruptions of Deccan had stopped some 100,000 years _before_ the K-T
boundary, and had _not_ produced a global mass extinction.