Earth Sciences

Diverse mantle components with invariant oxygen isotopes in the 2021 Fagradalsfjall eruption, Iceland

I. N. Bindeman, F. M. Deegan, et al.

The 2021 Fagradalsfjall eruption offers groundbreaking insights into Iceland's mantle composition, particularly its intriguing oxygen isotope composition. Despite significant variations in trace elements, the eruption's basalts exhibit consistent δ¹⁸O values, suggesting a unique mantle reference for the Reykjanes Peninsula. This research was conducted by I. N. Bindeman and colleagues.

00:00

Playback language: English

Index

Abstract

The 2021 Fagradalsfjall eruption, the first on the Reykjanes Peninsula in 781 years, provides a unique opportunity to study Iceland's mantle composition, particularly its oxygen isotope composition (δ¹⁸O). Basalts from the eruption show compositional variations in Zr/Y, Nb/Zr, and Nb/Y, indicating involvement of Icelandic plume (OIB) and Enriched Mid-Ocean Ridge Basalt (EMORB) components. However, δ¹⁸O values are remarkably invariant (mean 5.4 ± 0.3‰), indistinguishable from "normal" upper mantle, unlike significantly lower δ¹⁸O values found elsewhere in Iceland. This suggests that despite differing trace element characteristics, the melts show no evidence for ¹⁸O-depleted mantle or interaction with low-δ¹⁸O crust, providing a useful mantle reference value for this region.

Publisher

Nature Communications

Published On

Jun 29, 2022

Authors

I. N. Bindeman, F. M. Deegan, V. R. Troll, T. Thordarson, Á. Höskuldsson, W. M. Moreland, E. U. Zorn, A. V. Shevchenko, T. R. Walter

Related Publications

Explore these studies to deepen your understanding of the subject.

Earth Sciences

Tremor clustering reveals pre-eruptive signals and evolution of the 2021 Geldingadalir eruption of the Fagradalsfjall Fires, Iceland

Z. Zali, S. M. Mousavi, et al.

Chemistry

The role of oxygen-vacancy in bifunctional indium oxyhydroxide catalysts for electrochemical coupling of biomass valorization with CO<sub>2</sub> conversion

F. Ye, S. Zhang, et al.

Earth Sciences

Deformation and seismicity decline before the 2021 Fagradalsfjall eruption

F. Sigmundsson, M. Parks, et al.

Medicine and Health

Trends in dietary patterns over the last decade and their association with long-term mortality in general US populations with undiagnosed and diagnosed diabetes

S. Yuan, J. He, et al.

Listen, Learn & Level Up

Over 10,000 hours of research content in 25+ fields, available in 12+ languages.

No more digging through PDFs, just hit play and absorb the world's latest research in your language, on your time.

listen to research audio papers with researchbunny