Diamonds Linked to Quick Cooling Eons Ago

[domi]

sott is already carrying an article on this topic but this one is far more extensive

At least once in Earth’s history, global warming ended quickly, and scientists have long wondered why.

Now researchers are reporting that the abrupt cooling — which took place about 12,900 years ago, just as the planet was emerging from an ice age — may have been caused by one or more meteors that slammed into North America.
...

_http://www.nytimes.com/2009/01/02/science/02impact.html?ex=1388552400&en=c0f82d9bb1af16de&ei=5124&partner=digg&exprod=digg

 

[Johnno]

It's rather interesting that these micro diamonds are appearing in the substrate about the same time that Plato tells of the fall of Atlantis circa 12500BC. Laura has written about this in Independence Day.

http://www.cassiopaea.org/cass/Laura-Knight-Jadczyk/column-lkj-04-07-03.htm

The conclusion is, that the end of the Ice Age, the Pleistocene extinction, the end of the Upper Paleolithic, Magdalenian, Perigordian, and so on, all came to a global, catastrophic conclusion about 12000 years ago. And, as it happens, even before this evidence was brought to light, this is the same approximate date that Plato gave for the sinking of Atlantis. Coincidence?

There have already been glass cherts reported around 12500 from Firestones and Toppings research. Page 121 of Secret History of the World

Our research indicates that the entire Great Lakes region (and beyond) was subjected to particle bombardment and a catastrophic nuclear irradiation that produced secondary thermal neutrons from cosmic ray interactions. The neutrons produced unusually large quantities of Pu239 and substantially altered the natural uranium abundance rations in artifacts and in other exposed materials including cherts , sediments, and the entire landscape. These neutrons necessarily transmuted residual nitrogen in the dated charcoals to radiocarbon, thus explaining anomalous dates. […]
The C14 level in the fossil record would reset to a higher value. The excess global radiocarbon would then decay with a half-life of 5730 years, which should be seen in the radiocarbon analysis of varied systems.[…]
Sharp increases in C14 are apparent in the marine data at 4,000, 32,000-34,000, and 12,500 BC. These increases are coincident with geomagnetic excursions. […]

There's also a bit here

http://www.cassiopaea.com/cassiopaea/adventures243.htm

Regarding the idea that Antarctica was the center of an ancient civilization, I used to think that this was a pretty good explanation. However, in recent times, I have come across some information that makes me question this view. At present, what seems more likely is that North and South America were, in fact, the site of an advanced civilization passed down in myth and legend as a "great island" beyond the Pillars of Hercules. I will go into that more further on, but for the moment, I want to draw attention to the fact that Plato suggested that the Evil Empire of Atlantis was at war with the "Athenians" just prior to a cosmic disaster. So, in addition to considering the idea of cometary showers that could have destroyed ancient civilizations more than once, and which may be in our future, there is another matter to consider - which also bears strongly on our dating problems - that ancient civilizations may have fought nuclear wars.

So are these micro diamonds from a cometary impact or from a large nuclear explosion? Laura writes of a bit of both in Secret History of the World.