Re: Ice Age blast 'ravaged America'

Erik Hammerstad wrote:
Prerelease of what's to be presented at tomorrow's AGU meeting, http://news.bbc.co.uk/1/hi/sci/tech/6676461.stm and http://www.agu.org/meetings/sm07/sm07-sessions/sm07_PP43A.html

It will be interesting to see if the evidence sticks for a comet causing the demise of the big North-American mammals and possibly also setting of the Younger Dryas event.

When in doubt, invoke catastrophic celestial events. In this case they leave only the most elusive evidence.

Any invocation of catastrophic events can be handwaved into doing the exact amount of damage desired and no more.

True large mammals in the higher latitudes but also in the not so high latitudes but not close to the equator. The ice age returned for a short time? But the mammoths were in the higher latitudes during the ice age. There were fires? One expects a layer of carbon at the same level as these diamonds. One also expects the most fires in the region with the greatest vegetation, the tropics. But that is exactly where the elephants and other large mammals did survive. So this catastrophe targeted exactly what disappeared in the places where they disappeared. Ad hoc does not make for a robust theory.

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