[KarlInOhio]

I thought we were hit by an iridium-rich meteor, and that that was settled science.

That was at the end of the Cretaceous period about 66 million years ago. This article is about an event 170 million years ago.

[gleeaikin]

It is not inconceivable that there was also an iridium-rich meteor of some size 170 mya. Regarding the volcanism, was this by any chance the event that left us with the Giant’s Causway?