# Petaev 2013: Large Pt anomaly in the Greenland ice core points to a cataclysm at the onset of Younger Dryas

> Michail I. Petaev, Shichun Huang, Stein B. Jacobsen et al., 2013. 11 records on Mysteries Department cite it. The strongest single geochemical signal…

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[Sources](https://mysteriesdept.com/sources)[Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact)Petaev 2013

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# Large Pt anomaly in the Greenland ice core points to a cataclysm at the onset of Younger Dryas

Michail I. Petaev, Shichun Huang, Stein B. Jacobsen et al., 2013. _Proceedings of the National Academy of Sciences 110(32), 12917–12920_.

Trace-element analysis of GISP2 ice across the Bølling-Allerød/Younger Dryas boundary finds a large platinum anomaly without a matching iridium anomaly. The Pt/Ir ratio rules out mantle or chondritic sources; the authors suggest an Ir-poor iron meteorite, which they note is unlikely to produce an airburst or wide wildfires.

**Younger Dryas impact hypothesis** ArticleCopy of **[The GISP2 ice core](https://mysteriesdept.com/mysteries/younger-dryas-impact/artifacts/ART0D51XXAE2580/the-gisp2-ice-core)** doi: **[10.1073/pnas.1303924110](https://doi.org/10.1073/pnas.1303924110)** Checked against the original0

## What it's used for here

The strongest single geochemical signal near the boundary, and its authors' own caveats.

## Cited by on this site 11 records

[A small or differentiated extraterrestrial body (such as an iridium-poor iron meteorite) left the Greenland…](https://mysteriesdept.com/mysteries/younger-dryas-impact/answers/ANS0D51XCQ621B8/a-small-or-differentiated-extraterrestrial-body-such-as-an)

Answer

ANS

[An iridium-poor, highly differentiated iron meteorite.](https://mysteriesdept.com/mysteries/younger-dryas-impact/answers/ANS0D51XHV87VMD/an-iridium-poor-highly-differentiated-iron-meteorite)

Answer

ANS

[The GISP2 ice core](https://mysteriesdept.com/mysteries/younger-dryas-impact/artifacts/ART0D51XXAE2580/the-gisp2-ice-core)

ART

[The GISP2 ice core: document](https://mysteriesdept.com/mysteries/younger-dryas-impact/copies/CPY0D51XY1W47EM/the-gisp2-ice-core-document)

CPY

[GISP2 major and trace elements across the Bølling-Allerød/Younger Dryas boundary, including platinum and iridium (Petaev et al. 2013)](https://mysteriesdept.com/datasets/DAT0D51XTCP515S/gisp2-major-and-trace-elements-across-the-blling-allerd)

Dataset

DAT

[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)

Evidence

EVD

[The GISP2 spike has Pt/Ir ratios above all known terrestrial and chondritic materials and very high Pt/Al…](https://mysteriesdept.com/mysteries/younger-dryas-impact/evidence/EVD0D51XCZ0731Q/the-gisp2-spike-has-pt-ir-ratios-above-all-known-terrestrial)

Evidence

EVD

[Petaev and colleagues report a platinum anomaly in the GISP2 ice core](https://mysteriesdept.com/mysteries/younger-dryas-impact/events/EVT0D51X5503W3K/petaev-and-colleagues-report-a-platinum-anomaly-in-the-gisp2)

EVT

[Michail I. Petaev](https://mysteriesdept.com/mysteries/younger-dryas-impact/people/FIG0D51X3P46ECE/michail-i-petaev)

FIG

[The Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact)

The mystery article

MYS

[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)

Question

QST

## Cite it

```
Petaev, M. I., Huang, S., Jacobsen, S. B., & Zindler, A. (2013). Large Pt anomaly in the Greenland ice core points to a cataclysm at the onset of Younger Dryas. Proceedings of the National Academy of Sciences 110(32), 12917–12920. https://doi.org/10.1073/pnas.1303924110
```

[Read it free at doi.org](https://doi.org/10.1073/pnas.1303924110)

Key

**SRC** 0D51WQZ44MRA

Kind

Journal article

Rights

The publisher's

Checked

Against the published article

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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