13900 years ago or so, we had the Pleistocene Nonconformity. To date the available evidence is establishing that a comet impacted the Northern Ice sheet. That alone was huge.b It is my additional contention that this was deliberate and served to shift the thin upper crust riding on the liquid carbon interface thirty degrees south through Hudson Bay. I projected the likelihood of impact evidence in 2005 and published here in 2007. It is only in the past two years that the evidence has emerged to support that part of my conjectures.
The DNA evidence confirms two events.
The first is that the global distribution of mankind coming out of Africa occurred around 50,000 years ago which coincides with my projected fall from Eden event of 45,000 years ago. We still project penetration of North America to around 20,000 years ago.
The second event is that Europe and North America was depopulated by the comet Impact of 13900 BP. This is an expected outcome and coincides with the end in North America of the Clovis culture as well. Essentially Ice Age adapted peoples were abruptly removed from the fossil record, although survival was likely possible along the Pacific Rim in the Pacific Northwest.
We have two anchor dates for our prehistory. We have hugely unraveled the framework of human history post 13,900 which saw the collapse of the ice Age mostly until 11,500 BP followed by the establishment of colony nodes around the world to establish modern agricultural man. This took place as the lands opened up to moderated climates and fertile soils around 10,000 BP followed after around 4000 years of local growth to an ongoing global expansion of agricultural mankind beginning perhaps 7000 BP.
The gap is between 45,000 BP through 14,000 BP which is a span of 30,000 years. Mankind was robust and neanderthals were certainly integrated as well. They lived on the global continental shelf in a climate moderated by the ocean. Think about the climate of the Fraser flood plain around Vancouver and the Puget sound which is completely alien to the climate just over the barrier mountains mere miles away.
Thus our true ancestral stock likely increased to a massive population base and is plausibly a participant in the decision to end the Ice Age 13,900 years ago. I also suspect that they exited the Earth at the time to space habitats one of which is easily identified as such...
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DNA discovery unearths 'unknown chapter in human history' in Europe 15,000 years ago
Scientists studying the DNA of ancient Europeans found evidence of a 'major population upheaval' at the end of the last Ice Age
Friday 5 February 2016
http://www.independent.co.uk/news/science/population-change-shift-upheaval-europe-discovered-by-scientists-a6855336.html
A major and unexplained population shift occurred in Europearound 15,000 years ago when local hunter-gatherers were almost completely replaced by a group from another area, scientists researching our ancestors' genetics have discovered.
The findings were made after the extensive study of DNA evidence obtained from the bones and teeth of ancient people who lived in Europe during from the Late Pleistocene to the earlyHolocene, a period of roughly 30,000 years.
While attempting to find more genetic data from this time period, researchers from the Max Planck Institute for the Science of Human History in Germany made an unexpected discovery.
The Institute's Johannes Krause said: "We uncovered a completely unknown chapter of human history: a major population turnover at the end of the last Ice Age."
To try and piece together the facts of this 'lost period' the team analysed the mitochondrial genomes of 35 hunter-gatherers who lived in Italy, Germany, Belgium, France, the Czech Republic and Romania, from around 35,000 to 7,000 years ago.
Three of these 35 people had DNA that belonged to 'haplogroup M', meaning they all were part of a single line of descent.
This haplogroup is almost completely absent in modern Europeans, but it's very common among modern Asian, Australasian and Native American populations.
The absence of this haplogroup in places other than these led scientists to believe that non-African people dispersed gradually throughout history to colonise other parts of the world.
However, the discovery that this haplogroup existed in Europe relatively recently instead suggests that all non-Africans quickly dispered from a single group at a specific time, which scientists believe occurred around 50,000 years ago.
This is a major discovery in itself, but the researchers' biggest surprise came when they found evidence that there was a major population turnover in Europe around 14,500 years ago, as the last Ice Age ended and the world began to warm.
As Adam Powell, another Max Planck Institute author explained: "Our model suggests that during this period of climatic upheaval, the descendants of the hunter-gatherers who survived through the last glacial maximum [Ice Age] were largely replaced by a population from another source."
The next step for the researchers is to construct a more comprehensive picture of European genetics from this period, in order to find out what could have caused this huge population change.
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