QuestionsYounger Dryas impact hypothesisDid an extraterrestrial impact or airburst occur at the onset of the Younger Dryas, about 12,800 years ago?Answer
Answer · Younger Dryas impact hypothesis
Airbursts and impacts from a large fragmenting comet deposited a synchronous boundary layer with impact…
Airbursts and impacts from a large fragmenting comet deposited a synchronous boundary layer with impact markers across at least four continents.
Where it stands
DisputedTwo pieces of evidence for, four against. It needs two reviews to be accepted.
What it predicts
- The markers (microspherules, nanodiamonds, shocked quartz, platinum) peak in one thin layer and are rare above and below it.
- Independent laboratories, working blind, find the same peaks in the same samples.
- The layer has the same age, within dating error, at every site.
- Somewhere there is a crater, a strewn field or a melt deposit of that age.
What would rule it out
- Blind tests on complete, well-dated sections find the markers at other levels as often as at the boundary, or the boundary ages at the key sites differ by more than dating error.
Evidence 2 for · 4 against
FOR
FOR
AGAINST
AGAINST
The questions it answers
Most likelyNo impact or airburst occurred; the proposed markers are terrestrial or background cosmic material…
Cite it
Mysteries Department. (2026). Airbursts and impacts from a large fragmenting comet deposited a synchronous boundary layer with impact… [Answer ANS0D51XA183EE5]. https://mysteriesdept.com/r/ANS0D51XA183EE5
@misc{mysteriesdept_ans0d51xa183ee5,
title = {Airbursts and impacts from a large fragmenting comet deposited a synchronous boundary layer with impact…},
author = {{Mysteries Department}},
year = {2026},
note = {Answer, catalog key ANS0D51XA183EE5},
url = {https://mysteriesdept.com/r/ANS0D51XA183EE5}
}