Re: Mount Toba and extinction

[Dann Pigdon <dannj@alphalink.com.au>]

Simonyi wrote:
> 
> Mount Toba produced 2,000 and isn't 800 cubic km of ash. This volume is
> four times greater then the K-T impact was. Since the four times greater
> volume of matter carried in the air did not cause mass extinctions, the
> smaller volume definitely could not.
> 

That depends on the chemical composition of the ejecta. One is volcanic
ash - the other vapourised rock.

It also depends on how globally distributed the ejecta is.

-- 
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Dann Pigdon                   Australian Dinosaurs:
GIS / Archaeologist         http://www.geocities.com/dannsdinosaurs
Melbourne, Australia        http://www.alphalink.com.au/~dannj/
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