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Ancient Platinum Spike Linked to Volcanic Eruptions, Not Meteorites

9/20/2025

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Summary

Story summary

Research identifies a platinum spike in Greenland's ice from 12,800 years ago, likely linked to a volcanic eruption rather than a meteorite impact.
The Younger Dryas Event, marked by a temperature drop of over 15°C, began around this time.
Analysis shows Laacher See volcanic pumice contains negligible platinum, ruling it out as the cause.
The spike occurred 45 years after the Younger Dryas began, indicating it was not the cooling trigger.
Volcanic gases from Iceland may explain the platinum chemistry, suggesting eruptions contributed to the cooling.

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Story summary

Research identifies a platinum spike in Greenland's ice from 12,800 years ago, likely linked to a volcanic eruption rather than a meteorite impact.
The Younger Dryas Event, marked by a temperature drop of over 15°C, began around this time.
Analysis shows Laacher See volcanic pumice contains negligible platinum, ruling it out as the cause.
The spike occurred 45 years after the Younger Dryas began, indicating it was not the cooling trigger.
Volcanic gases from Iceland may explain the platinum chemistry, suggesting eruptions contributed to the cooling.