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Zircon Dating Reveals Hidden Magma Reservoirs in Dormant Methana

4/30/2026

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Summary

Story summary

ETH Zurich volcanologists led by Razvan-Gabriel Popa dated over 1,250 zircon crystals from 31 sites, showing Methana built magma reservoirs during a 280,000-to-170,000-year dormancy.
Zircon formation peaked in that quiet interval, indicating magma production despite no surface eruptions.
They urge monitoring with gas, deformation, micro-earthquakes and satellite data because hidden magma buildup may exist in subduction-zone volcanoes.

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Story summary

ETH Zurich volcanologists led by Razvan-Gabriel Popa dated over 1,250 zircon crystals from 31 sites, showing Methana built magma reservoirs during a 280,000-to-170,000-year dormancy.
Zircon formation peaked in that quiet interval, indicating magma production despite no surface eruptions.
They urge monitoring with gas, deformation, micro-earthquakes and satellite data because hidden magma buildup may exist in subduction-zone volcanoes.