
The 2021 Fagradalsfjall eruptions in Iceland involved fractional crystallization and significant crustal contamination, while the 2022 eruptions showed no evidence of crustal assimilation.


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Using osmium isotopes, the 2021 Fagradalsfjall lavas in Iceland are shown to be both fractionally crystallized and strongly crustally contaminated, probably by mid-ocean-ridge gabbros and older basalts underlying the Reykjanes Peninsula.

Deep crustal assimilation during the 2021 Fagradalsfjall Fires, Iceland - Nature

osmium-isotopes-reveal-crustal-assimilation-in-2021-fagradalsfjall-eruptions-iceland


Osmium Isotopes Reveal Crustal Assimilation in 2021 Fagradalsfjall Eruptions, Iceland


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감람암에 기록된 초저산소 퍼텐셜은 고온 고대 맨틀의 대규모 용융 과정에서 발생한다.


Analysis of peridotites reveals ultralow oxygen fugacity, suggesting that rafts of ancient, ultrareduced mantle were generated by deep melting at high temperatures and&nbsp;continue to circulate in the modern mantle, although they&nbsp;contribute little to modern ridge volcanism.

Deep, hot, ancient melting recorded by ultralow oxygen fugacity in peridotites - Nature

초고온-고대-맨틀의-초저산소-퍼텐셜이-기록된-감람암에-대한-연구


초고온 고대 맨틀의 초저산소 퍼텐셜이 기록된 감람암에 대한 연구



Peridotites from the Gakkel Ridge and East Pacific Rise record oxygen fugacity (fO2) more than four orders of magnitude below the mantle average, indicating ancient, high-temperature melting events.


ultralow-oxygen-fugacity-in-peridotites-reveals-deep-hot-and-ancient-melting-events


Ultralow Oxygen Fugacity in Peridotites Reveals Deep, Hot, and Ancient Melting Events
