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The Cataclysm That Erased History 12,000 Years Ago

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The Younger Dryas stadial, also referred to as the Big Freeze, was a geologically brief (1,300 ± 70 years) period of cold climatic conditions and drought which occurred between approximately 12,800 and 11,500 years BP. The Younger Dryas stadial is thought to have been caused by the collapse of the North American ice sheets, although rival theories have been proposed.

 

The Younger Dryas impact event is a contested hypothesis that an air burst from a purported comet above or even into the Laurentide Ice Sheet north of the Great Lakes set all of the North American continent ablaze around 12,900 years ago. The hypothesis attempts to explain the extinction of many of the large animals in North America and the unproven population decreases in the North American stone age Clovis culture about at the end of the Pleistocene epoch. Proponents claim the existence of a charred carbon-rich layer of soil found at some 50 Clovis-age sites across the continent. It has been criticized for not being consistent with paleoindian population estimates.

Impact specialists have studied the claim and concluded that there never was such an impact, in particular because various physical signs of such an impact cannot be found. Evidence supporting the theory however has been further suggested by the 2012 paper presented to the PNAS (T.E. Bunch et al.) which looked at apparent high temperature impact melt products found in multiple sites of the ‘black mat’ across three continents dating to 12 900 years ago, This is further indicated by the discovery (Kurbatov et al. 2010) of the presence of a rich layer of nanodiamonds in the Greenland ice sheet coinciding with this date.

 

 

One explanation of the abrupt cooling episode known as the Younger Dryas (YD) is a cosmic impact or airburst at the YD boundary (YDB) that triggered cooling and resulted in other calamities, including the disappearance of the Clovis culture and the extinction of many large mammal species. Researchers Michail I. Petaev Shichun Huang, Stein B. Jacobsen, and Alan Zindler tested the YDB impact hypothesis by analyzing ice samples from the Greenland Ice Sheet Project 2 (GISP2) ice core across the Bølling-Allerød/YD boundary for major and trace elements. 

According to a report “ Large Pt anomaly in the Greenland ice core points to a cataclysm at the onset of Younger Dryas: in the Proceeding of National Academy of Science, they  found a large platinum (Pt) anomaly at the YDB, not accompanied by a prominent iridium (Ir) anomaly, with the Pt/Ir ratios at the Pt peak exceeding those in known terrestrial and extraterrestrial materials. Whereas the highly fractionated Pt/Ir ratio rules out mantle or chondritic sources of the Pt anomaly, it does not allow positive identification of the source. Circumstantial evidence such as very high, superchondritic Pt/Al ratios associated with the Pt anomaly and its timing, different from other major events recorded on the GISP2 ice core such as well-understood sulfate spikes caused by volcanic activity and the ammonium and nitrate spike due to the biomass destruction, hints for an extraterrestrial source of Pt. Such a source could have been a highly differentiated object like an Ir-poor iron meteorite that is unlikely to result in an airburst or trigger wide wildfires proposed by the YDB impact hypothesis.



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    Total 8 comments
    • riskofshock

      Latitude 45 degrees 9′ 5″ N
      Longitude 117 degrees 15′ 56″ W

    • HIDDENTEXTOR

      he omitted to say that an astronomical calendar has been found on the roof of one of the “air” shafts
      in the great pyramid (PYRE AMID)
      this provides the date of 9,200BC

    • CosmicKiwiPerth

      Read D.S. Allen & J.B Delair`s book called; The Day the Earth nearly Died. Google it. Get a second hand copy even. Plenty of good photos & diagrams. It stole some outer planets moons on its way into our solar system. Tipped Uranus on it`s side. Destroyed the planet that is now the Asteroid belt. Jupiter was way out of range. The Earth drew in some of its smaller (though huge) accompanying rocks. Carolina Bays elliptical craters is one spot. It slowed down Venus`s rotation before impacting the sun. We were so close. The dust from impacts,volcanic eruptions & earthquakes caused a collapsed sky conditions where the sky might appear to be 300 ft above you. Lions & other animals huddled in caves to get away from the mayhem. Continents sank. It could happen again. Nothing is sturdy.

    • CosmicKiwiPerth

      Oops left out a sentence saying about this object. But you get the idea.

    • CosmicKiwiPerth

      Wow I typed in the above before seeing the video. And he mentions these authors too.

    • Jack F00BAR

      We’re on a spinning liquid ball of molten iron. Anything half as large to as large as us passing by, and the poles get pegged. You don’t need a asteroid to destroy the Earth when you can flip the poles in 30 minutes. It flattens itself.

    • philovance

      The books called “The Atlantis Blueprint” and “Atlantis Beneath The Ice” both written by Rand Flem-ATH show how every 50,00o or so years a massive shift of the earths crust over the athenosphere (the 20 mile thick sludge beneath 30 miles of crust) shifts because of the weight of the ice buildup on the North and South poles and the elongated orbit of the earth destablizing the crust. The last crust displacement happened 12,500 years ago when the North Pole was centered where Hudson Bay is today. New York, Pennsylvania, Ohio, Illinois Wisconsin and parts of New England were in the north Polar zone and slid to a temperate climate. Atlantis was part of Antarctica that slipped completely into the South Polar Zone. The melting of the glaciers cause the great flood and created the Great Lakes. Charles Hapgood wrote “The Path to the Pole” about Earth Crust displacement in the fifties with Albert Einstein an enthusiastic supporter of his theories. I believe you cannot be truly educated about prehistory without reading these books.

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