Open Veils · Answer
What caused the younger drias?
The Younger Dryas Impact Hypothesis — championed by researchers including Allen West, James Kennett, and the Comet Research Group — posits that a fragmenting comet or asteroid struck the Laurentide Ice Sheet around 12,900 BP, triggering catastrophic fires, megafaunal extinction, and civilizational collapse. A April 2026 Science Advances study offers a competing volcanic-forcing model, but independent impact researchers argue the platinum-group element and nanodiamonds signature across four continents cannot be explained by volcanism alone. Randall Carlson and Graham Hancock have both emphasized that the conventional meltwater narrative fails to account for the geological violence encoded in the Channeled Scablands and similar catastrophic flood landscapes.
Evidence
- A April 2026 Science Advances paper (per Science Advances, Apr 2026) presented osmium isotope and platinum-group element data from multiple Texas sites, arguing the chemical fingerprint matches volcanic aerosols from a bipolar eruption cluster (~12,980–12,870 BP) rather than extraterrestrial material.
- Paul LaViolette's galactic superwave hypothesis offers a third, more esoteric vector: a cosmic-ray burst from the galactic core triggering solar outbursts that destabilized the ice sheet.
- Researcher Allen West and geologist James Kennett have argued this multi-proxy fingerprint is consistent with an airburst or impact swarm, not volcanism.
- Graham Hancock, in 'Magicians of the Gods' and his collaborations with Carlson, ties this event to the destruction of an advanced pre-12,000 BP civilization, citing Göbekli Tepe's Pillar 43 as a potential astronomical record of the impact.
- Comet Research Group members have countered that volcanic sources cannot produce the lonsdaleite, cubic nanodiamonds, or high-temperature spherules found at YDIH boundary layers — materials requiring pressures and temperatures exclusive to impact or airburst events.