Re: Mega eruption may have wiped out [Cambrian] life

[K and T Dykes <ktdykes@arcor.de>]

<<I'd wager that it takes more than just a single event (probably even more
than two coincidental events) to cause a mass extinction. No doubt a whole
lot of bad luck just happens to coincide (impact/s, volcanism, climate
change, methane belches, etc).>>

There's a heck of a difference between that, and concluding it was two
events what probably did it, Dann.  As you point out several other
possibilities, I doubt that first sentence is exactly controversial.  Doing
something as mundane as bunging in a landbridge between North and South
America, for example, could have interesting effects on sea flows.  And you
don't need  a weatherman to know that affects how the wind blows...  (With
thanks to Bob Dylan.)
>
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> Dann Pigdon
> GIS / Archaeologist         http://heretichides.soffiles.com
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