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f02e28f
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A single high NH4 peak, traced to biomass burning across North America, begins at the [Younger Dryas] onset. It is the largest biomass-burning episode from North American sources in the entire record.
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wildfires
younger-dryas
cataclysm
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Graham Hancock |
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80d54c6
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Massive wildfires occurred at the onset of the Younger Dryas, representing the most anomalous episode of biomass burning in at least 120,000 years and possibly in the past ~386,000 years.
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comet-impact
wildfires
younger-dryas
deep-human-history
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Graham Hancock |
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9cd5f63
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A 24,000-year sequence recorded in a marine core from the Santa Barbara Basin, off the coast of California, exhibits the highest peak in biomass burning precisely at the onset of the Younger Dryas. ... This anomalously high peak correlates with intense biomass burning documented from the nearby Channel Islands. ... The peak also coincides with the extinction of pygmy mammoths on the islands and with the beginning of an apparent 600-800-year gap in the archaeological record, suggesting a sudden collapse in island human populations.
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collapse
comet-impact
wildfires
younger-dryas
deep-human-history
extinction
cataclysm
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Graham Hancock |
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7c1c4ea
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The earth and all life upon it endured and was devastated by what can only be described as a globally distributed firestorm at the onset of the Younger Dryas around 12,800 years ago. In this planetary debacle, 10 million square kilometers of trees and other plant matter burned. To put that in perspective, the United Kingdom was in a state of traumatic shock in late June and early July 2018 after 4,942 acres of Lancashire moorland were consumed by wildfires. That's an area of just 20 square kilometers, but firefighters and emergency services from seven counties were utterly overwhelmed by the blaze and the military had to be brought in to assist. Meanwhile, a report in the dated July 2, 2018, opined that California's wildfire season had started early, with two 'major fires' already fought at huge expense and requiring evacuation of local residents. These two fires were estimated to have consumed 85,000 acres, which sounds an awful lot but in fact converts to just 344 square kilometers. The previous years, 2017, was California's most destructive wildfire season then on record, with a total of 1.25 million acres burned. The cost of dealing with the disaster, including fire suppression, insurance, and recovery expenditures, was estimated at US$180 billion. Yet 1.38 million acres converts to just 5,585 square kilometers--an insignificant fraction (around 0.05 percent--that is, a twentieth of 1 percent) of the 10 million square kilometers destroyed in the Younger Dryas wildfires.
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debacle
comet-impact
wildfires
younger-dryas
devastation
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Graham Hancock |
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c94d9a7
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SHERIDEN CAVE, OHIO: There are [Younger Dryas Boundary] peaks in magnetic spherules, meltglass, nanodiamonds, Pt, and Ir. A charcoal-rich black mat dates to the [Younger Dryas] onset and contains peak abundances of charcoal, AC/soot, carbon spherules, and nanodiamonds that are closely associated with the last known Clovis artifacts in the cave. The black-mat layer is in direct contact with the wildfire-charred bones of two mega-mammals, the flat-headed peccary ( ) and the giant beaver ( ), that are the last known examples anywhere in the world of those extinct species.
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comet-impact
wildfires
paleontology
younger-dryas
deep-human-history
extinction
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Graham Hancock |
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ec8a400
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[The cosmic impact that started the Younger Dryas] marked the end of their story, and the end of an epoch, really. There's not a single Clovis point found anywhere in North America that's above that black mat. They're all in it or below it. And there's not a single mammoth skeleton anywhere in North America that's above it. A huge part of the die-off could have been as a direct result of the impacts themselves, but impacts and airbursts south of the ice cap, particularly as far south as New Mexico, would also have set off wildfires. There's overwhelming evidence that gigantic wildfires raged at the onset of the Younger Dryas--in fact, more soot has been found at the Younger Dryas Boundary than at the Cretaceous-Paleogene Boundary. We did the calculations and it looks like as much as 25 percent of the edible biomass and around 9 percent of the total biomass of the planet was on fire and destroyed within days or weeks of the YDB. So in many areas if the animals weren't killed outright they wouldn't have been able to forage enough food afterwards to survive. The grass would have burned up, leaves on trees were gone. ... And you know, the other thing is that when comet fragments come in they're traveling incredibly fast and they literally punch a hole in the atmosphere. They actually push the air aside and they bring in that super cold from space, and when they explode in the air that cold plume continues to the ground and you literally have things frozen in place if they were close enough to where the plume came down. It's possible they were fried and then frozen all within a matter of seconds.
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epoch
wildfires
cosmic-impact
paleontology
younger-dryas
evidence
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Graham Hancock |