Abstract
The purpose of my article was to show that massive outbursts of volcanism occur in flood basalt provinces of an intensity and size that has hitherto not been widely realized, and that we now have a physical model to understand why they may occur so abruptly. Intense environmental pressures may result from their igneous outbursts and they may explain observed mass extinctions. Graham Ryder is quite right to point out that there is global evidence of impact(s) at the Cretaceous‐Tertiary boundary at the same time as the global microfaunal extinctions. But there was also massive volcanism in the Deccan at the same time.
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