# An iridium-poor, highly differentiated iron meteorite.

> Still possible: An iridium-poor, highly differentiated iron meteorite.

Source: https://mysteriesdept.com/mysteries/younger-dryas-impact/answers/ANS0D51XHV87VMD/an-iridium-poor-highly-differentiated-iron-meteorite  
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)[What produced the platinum spike in the GISP2 ice core near the Younger Dryas onset?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X92023AG/what-produced-the-platinum-spike-in-the-gisp2-ice-core-near)Answer

Answer · Younger Dryas impact hypothesis

# An iridium-poor, highly differentiated iron meteorite.

An iridium-poor, highly differentiated iron meteorite.

**Still possible** Answers **1** questionPublished0

## Where it stands

**Still possible** Its tests haven't settled it: one piece of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- Meteoritic osmium isotope ratios in the spike interval.
- The spike is short, as from a single fall.

## What would rule it out

- Osmium isotopes in the spike interval are terrestrial, or a matching tephra is found.

## Evidence 1 for · 1 against

[Superchondritic Pt/Al and fractionated Pt/Ir ratios exclude mantle and chondritic sources.](https://mysteriesdept.com/mysteries/younger-dryas-impact/evidence/EVD0D51XJ326DWH/superchondritic-pt-al-and-fractionated-pt-ir-ratios-exclude)

Supported

FOR

[The spike spans about 14 years.](https://mysteriesdept.com/mysteries/younger-dryas-impact/evidence/EVD0D51XJAW7C5S/the-spike-spans-about-14-years)

Suggestive

AGAINST

## The questions it answers

[What produced the platinum spike in the GISP2 ice core near the Younger Dryas onset?](https://mysteriesdept.com/mysteries/younger-dryas-impact/questions/QST0D51X92023AG/what-produced-the-platinum-spike-in-the-gisp2-ice-core-near)

Open4 answers, none ahead

## Cite it

```
Mysteries Department. (2026). An iridium-poor, highly differentiated iron meteorite. [Answer ANS0D51XHV87VMD]. https://mysteriesdept.com/r/ANS0D51XHV87VMD
```

Key

**ANS** 0D51XHV87VMD

Kind

Answer · hypothesis

Origin

Published

Version

1

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