No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption

M. A. Stow; J. Prytulak; K. W. Burton; G. M. Nowell; E. W. Marshall; S. A. Halldórsson; S. Matthews; M. B. Rasmussen; E. Ranta; A. Caracciolo

doi:10.7185/geochemlet.2335

No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption

M. A. Stow, J. Prytulak, K. W. Burton, G. M. Nowell, E. W. Marshall, S. A. Halldórsson, S. Matthews, M. B. Rasmussen, E. Ranta, A. Caracciolo

Geotieteiden ja maantieteen osasto

Tutkimustuotos: Artikkelijulkaisu › Artikkeli › Tieteellinen › vertaisarvioitu

Abstrakti

The Earth’s mantle is chemically heterogeneous in space and time, which is often reflected by variable isotopic compositions of mantle derived basalts. Basalts from the first 40 days of the 2021 Fagradalsfjall eruption, Reykjanes Peninsula, Iceland, display systematic temporal variations in the ratios of incompatible elements alongside resolvable variations in Sr, Nd and Pb radiogenic isotopes. These variations reflect progressive influx of magma derived from melting of a deeper, more enriched and potentially lithologically distinct source.

heterogeneity. We find no analytically resolvable change in V (δ⁵¹V_AA between −0.95 ± 0.09 % 2 s.d. and −0.86 ± 0.07 % 2 s.d.), Fe (δ⁵⁶Fe_IRMM-524 between +0.047 ± 0.042 % 2 s.d. and +0.094 ± 0.049 % 2 s.d.) and Zn (δ⁶⁶Zn_AA-ETH between −0.042 ± 0.003 % 2 s.d. and +0.013 ± 0.027 % 2 s.d.) isotopic compositions. The lack of variability in V-Fe-Zn isotopes, despite the evolving trace element and radiogenic isotope ratios, suggests there is no significant contribution of melts from a lithologically distinct (pyroxenite) mantle component under the Reykjanes Peninsula.

Alkuperäiskieli	englanti
Lehti	Geochemical Perspectives Letters
Vuosikerta	27
Sivut	54-58
Sivumäärä	5
ISSN	2410-339X
DOI - pysyväislinkit	https://doi.org/10.7185/geochemlet.2335
Tila	Julkaistu - 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

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© 2023 European Association of Geochemistry. All rights reserved.

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10.7185/geochemlet.2335Lisenssi: CC BY

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title = "No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption",

abstract = "The Earth{\textquoteright}s mantle is chemically heterogeneous in space and time, which is often reflected by variable isotopic compositions of mantle derived basalts. Basalts from the first 40 days of the 2021 Fagradalsfjall eruption, Reykjanes Peninsula, Iceland, display systematic temporal variations in the ratios of incompatible elements alongside resolvable variations in Sr, Nd and Pb radiogenic isotopes. These variations reflect progressive influx of magma derived from melting of a deeper, more enriched and potentially lithologically distinct source.heterogeneity. We find no analytically resolvable change in V (δ51VAA between −0.95 ± 0.09 % 2 s.d. and −0.86 ± 0.07 % 2 s.d.), Fe (δ56FeIRMM-524 between +0.047 ± 0.042 % 2 s.d. and +0.094 ± 0.049 % 2 s.d.) and Zn (δ66ZnAA-ETH between −0.042 ± 0.003 % 2 s.d. and +0.013 ± 0.027 % 2 s.d.) isotopic compositions. The lack of variability in V-Fe-Zn isotopes, despite the evolving trace element and radiogenic isotope ratios, suggests there is no significant contribution of melts from a lithologically distinct (pyroxenite) mantle component under the Reykjanes Peninsula.",

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author = "Stow, {M. A.} and J. Prytulak and Burton, {K. W.} and Nowell, {G. M.} and Marshall, {E. W.} and Halld{\'o}rsson, {S. A.} and S. Matthews and Rasmussen, {M. B.} and E. Ranta and A. Caracciolo",

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doi = "10.7185/geochemlet.2335",

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journal = "Geochemical Perspectives Letters",

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T1 - No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption

AU - Stow, M. A.

AU - Prytulak, J.

AU - Burton, K. W.

AU - Nowell, G. M.

AU - Marshall, E. W.

AU - Halldórsson, S. A.

AU - Matthews, S.

AU - Rasmussen, M. B.

AU - Ranta, E.

AU - Caracciolo, A.

PY - 2023

Y1 - 2023

N2 - The Earth’s mantle is chemically heterogeneous in space and time, which is often reflected by variable isotopic compositions of mantle derived basalts. Basalts from the first 40 days of the 2021 Fagradalsfjall eruption, Reykjanes Peninsula, Iceland, display systematic temporal variations in the ratios of incompatible elements alongside resolvable variations in Sr, Nd and Pb radiogenic isotopes. These variations reflect progressive influx of magma derived from melting of a deeper, more enriched and potentially lithologically distinct source.heterogeneity. We find no analytically resolvable change in V (δ51VAA between −0.95 ± 0.09 % 2 s.d. and −0.86 ± 0.07 % 2 s.d.), Fe (δ56FeIRMM-524 between +0.047 ± 0.042 % 2 s.d. and +0.094 ± 0.049 % 2 s.d.) and Zn (δ66ZnAA-ETH between −0.042 ± 0.003 % 2 s.d. and +0.013 ± 0.027 % 2 s.d.) isotopic compositions. The lack of variability in V-Fe-Zn isotopes, despite the evolving trace element and radiogenic isotope ratios, suggests there is no significant contribution of melts from a lithologically distinct (pyroxenite) mantle component under the Reykjanes Peninsula.

AB - The Earth’s mantle is chemically heterogeneous in space and time, which is often reflected by variable isotopic compositions of mantle derived basalts. Basalts from the first 40 days of the 2021 Fagradalsfjall eruption, Reykjanes Peninsula, Iceland, display systematic temporal variations in the ratios of incompatible elements alongside resolvable variations in Sr, Nd and Pb radiogenic isotopes. These variations reflect progressive influx of magma derived from melting of a deeper, more enriched and potentially lithologically distinct source.heterogeneity. We find no analytically resolvable change in V (δ51VAA between −0.95 ± 0.09 % 2 s.d. and −0.86 ± 0.07 % 2 s.d.), Fe (δ56FeIRMM-524 between +0.047 ± 0.042 % 2 s.d. and +0.094 ± 0.049 % 2 s.d.) and Zn (δ66ZnAA-ETH between −0.042 ± 0.003 % 2 s.d. and +0.013 ± 0.027 % 2 s.d.) isotopic compositions. The lack of variability in V-Fe-Zn isotopes, despite the evolving trace element and radiogenic isotope ratios, suggests there is no significant contribution of melts from a lithologically distinct (pyroxenite) mantle component under the Reykjanes Peninsula.

KW - 1171 Geosciences

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U2 - 10.7185/geochemlet.2335

DO - 10.7185/geochemlet.2335

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JO - Geochemical Perspectives Letters

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