Re: 13 kya: Case Strengthens For Cosmic Explosion Over Canada

[Adam <adam@crowlspace.com>]

Hi All

Best to remain a bit sceptical of this one until we have some more data. 
All the current evidence has other sources than a single object's 
fragmentation. A lot of small stuff rains out of the sky from 
interplanetary dust almost continually. Something a bit more definitive 
is needed to say this really was a major "impact" - it could well have 
been a diffuse mass of small Tunguska-scale air-bursts over a large 
region, so it might well be very difficult to differentiate such a 
scenario from the steady fall of nano-diamonds, small meteorites and so 
forth. Need some lake bed cores with very fine-scale temporal resolution.

Adam

Richard W. Travsky wrote:

> Not dinos, but...
>
> http://www.uc.edu/news/NR.asp?id=8625
>
> Geological evidence found in Ohio and Indiana in recent weeks is 
> strengthening the case to attribute what happened 12,900 years ago in 
> North America -- when the end of the last Ice Age unexpectedly turned 
> into a phase of extinction for animals and humans  to a cataclysmic 
> comet or asteroid explosion over top of Canada.
>
> A comet/asteroid theory advanced by Arizona-based geophysicist Allen 
> West in the past two years says that an object from space exploded 
> just above the earths surface at that time over modern-day Canada, 
> sparking a massive shock wave and heat-generating event that set large 
> parts of the northern hemisphere ablaze, setting the stage for the 
> extinctions.
>
> Now University of Cincinnati Assistant Professor of Anthropology Ken 
> Tankersley, working in conjunction with Allen West and Indiana 
> Geological Society Research Scientist Nelson R. Schaffer, has verified 
> evidence from sites in Ohio and Indiana  including, locally, Hamilton 
> and Clermont counties in Ohio and Brown County in Indiana  that offers 
> the strongest support yet for the exploding comet/asteroid theory.
>
> Samples of diamonds, gold and silver that have been found in the 
> region have been conclusively sourced through X-ray diffractometry in 
> the lab of UC Professor of Geology Warren Huff back to the diamond 
> fields region of Canada.
> [...]