# The boundary layer at all sites dates to 12,835–12,735 cal BP within dating error.

> Disputed: The boundary layer at all sites dates to 12,835–12,735 cal BP within dating error.

Source: https://mysteriesdept.com/mysteries/younger-dryas-impact/answers/ANS0D51XDPE63NW/the-boundary-layer-at-all-sites-dates-to-12-83512-735-cal-bp  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact)[Is the claimed boundary layer the same age at every site?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X8JC0DHZ/is-the-claimed-boundary-layer-the-same-age-at-every-site)Answer

Answer · Younger Dryas impact hypothesis

# The boundary layer at all sites dates to 12,835–12,735 cal BP within dating error.

The boundary layer at all sites dates to 12,835–12,735 cal BP within dating error.

**Disputed** Answers **1** questionPublished0

## Where it stands

**Disputed** One piece of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- Bayesian age-depth models built on all available dates at each site place the layer in the same century.
- Dates directly on the layer agree with those bracketing it.

## What would rule it out

- Well-dated sites with the layer clearly older or younger than the window.

## Evidence 1 for · none against

[Two statistical tests on modelled and unmodelled ages from 30 records are consistent with synchronous…](https://mysteriesdept.com/mysteries/younger-dryas-impact/evidence/EVD0D51XDY859AR/two-statistical-tests-on-modelled-and-unmodelled-ages-from)

Suggestive

FOR

## The questions it answers

[Is the claimed boundary layer the same age at every site?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X8JC0DHZ/is-the-claimed-boundary-layer-the-same-age-at-every-site)

Part of [Did an extraterrestrial impact or airburst occur at the onset of the Younger Dryas, about 12,800 years ago?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X8AJ1304/did-an-extraterrestrial-impact-or-airburst-occur-at-the)

Most likelyThe claimed layers are of different ages, or their ages are not known well enough to say

## Cite it

```
Mysteries Department. (2026). The boundary layer at all sites dates to 12,835–12,735 cal BP within dating error. [Answer ANS0D51XDPE63NW]. https://mysteriesdept.com/r/ANS0D51XDPE63NW
```

Key

**ANS** 0D51XDPE63NW

Kind

Answer · hypothesis

Origin

Published

Version

1

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