# Meltwater from the retreating ice sheets weakened the Atlantic overturning circulation.

> Most likely: Meltwater from the retreating ice sheets weakened the Atlantic overturning circulation.

Source: https://mysteriesdept.com/mysteries/younger-dryas-impact/answers/ANS0D51XMH60RGT/meltwater-from-the-retreating-ice-sheets-weakened-the  
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[Questions](https://mysteriesdept.com/questions)[Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact)[What triggered the Younger Dryas cooling?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X99T2T4C/what-triggered-the-younger-dryas-cooling)Answer

Answer · Younger Dryas impact hypothesis

# Meltwater from the retreating ice sheets weakened the Atlantic overturning circulation.

Meltwater from the retreating ice sheets weakened the Atlantic overturning circulation.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests supported it: two pieces of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- Similar abrupt cold events occur without impact markers elsewhere in the deglaciation.
- Ocean records show reduced overturning at the onset.

## What would rule it out

- Ocean-circulation proxies showing no change at the onset.

## Evidence 2 for · none against

[The GISP2 record shows onset and end within decades, the pattern of circulation switches.](https://mysteriesdept.com/mysteries/younger-dryas-impact/evidence/EVD0D51XN0T3EVS/the-gisp2-record-shows-onset-and-end-within-decades-the)

Supported

FOR

[The Younger Dryas resembles other abrupt cold events of the last deglaciation.](https://mysteriesdept.com/mysteries/younger-dryas-impact/evidence/EVD0D51XMS078G5/the-younger-dryas-resembles-other-abrupt-cold-events-of-the)

Supported

FOR

## The questions it answers

[What triggered the Younger Dryas cooling?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X99T2T4C/what-triggered-the-younger-dryas-cooling)

Most likelyMeltwater from the retreating ice sheets weakened the Atlantic overturning circulation

## Cite it

```
Mysteries Department. (2026). Meltwater from the retreating ice sheets weakened the Atlantic overturning circulation. [Answer ANS0D51XMH60RGT]. https://mysteriesdept.com/r/ANS0D51XMH60RGT
```

Key

**ANS** 0D51XMH60RGT

Kind

Answer · hypothesis

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