Trace element composition in olivine from the 2022 Meradalir eruption of the Fagradalsfjall Fires, SW-Iceland (Short Communication)

Vol.12,No.2(2022)

Abstract

This study focuses on determining the trace element composition in olivine from olivine tholeiitic basalts sampled in Iceland during the 2022 Meradalir eruption of the 2021-ongoing Fagradalsfjall Fires. The chemistry of Meradalir olivine is characteristic for a volcanic origin where olivine crystals represent the product of crystallisation. Olivine from the Meradalir basalt magma falls within the field characteristic for the melting of a dominantly peridotitic mantle source. However, the data show that the 2022 Meradalir olivine crystalized from a compositionally more evolved magma than olivine from the preceding 2021 Geldingadalir eruption of the Fagradalsfjall Fires.


Keywords:
olivine; Reykjanes Peninsula; Meradalir lava; LA-ICP-MS
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Web sources / Other sources

[1] Jarðvísindastofnun – Institute of Earth Sciences, University of Iceland.

http://jardvis.hi.is/eldgos_i_meradolum

[2] Andrews, R.G. (2022): Iceland eruption may be the start of decades of volcanic activity. National Geographic, 4. 8. 2022.

https://www.nationalgeographic.com/science/article/iceland-eruption-may-be-the-start-of-decades-of-volcanic-activity

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