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Frontiers in Earth Science, volume 9

Noble Metals in Arc Basaltic Magmas Worldwide: A Case Study of Modern and Pre-Historic Lavas of the Tolbachik Volcano, Kamchatka

Kutyrev Anton ^{1, 2}

Zelenski Michael ²

Nekrylov Nikolai ^{1, 2}

Savelyev Dmitry ¹

Kontonikas-Charos Alkiviadis ³

Kamenetsky Vadim S. ^{1, 2}

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Institute of Volcanology and Seismology FEB RAS, Russia |

Institute of Experimental Mineralogy RAS, Russia |

Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Germany |

Publication type: Journal Article

Publication date: 2021-12-02

Frontiers Media S.A.

Journal: Frontiers in Earth Science

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Impact factor: 2.9

ISSN: 22966463

DOI: 10.3389/feart.2021.791465

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General Earth and Planetary Sciences

Abstract

Platinum-group elements (PGE) and gold are a promising tool to assess the processes of mantle melting beneath the subduction zones. However, fractionation processes in magmas inevitably overwrite the initial metal budgets of magmas, making constraints on the melting processes inconclusive. Moreover, little is still known about the geochemical behavior of a particular metal in a single arc magmatic system, from mantle melting towards magma solidification. Here we compare noble metals in lavas from several eruptions of the Tolbachik volcano (Kamchatka arc) to better understand the effects of magma differentiation, estimate primary melt compositions and make constraints on the mantle melting. We show that Ir, Ru, Rh and, to a lesser extent, Pt are compatible during magmatic differentiation. The pronounced incompatible behavior of Cu and Pd, observed in Tolbachik magmas, rules out the significant influence of sulfide melts on the early magmatic evolution in this particular case. Gold is also incompatible during magmatic differentiation; however, its systematics can be affected by the inferred gold recycling in the plumbing system of Tolbachik. Although the Tolbachik lavas show only slightly higher PGE fractionation than in MORB, a notable negative Ru anomaly (higher Pt/Ru and Ir/Ru) is observed. We attribute this to be a result of greater oxidation in the subarc mantle (by 1–4 log units), which promotes crystallization of Ru-bearing phases such as Fe³⁺-rich Cr-spinel and laurite. The estimated Pd contents for the parental melt of the Tolbachik lavas approaches 6.5 ppb. This is several times higher than reported MORB values (1.5 ± 0.5 ppb), suggesting the enrichment of Pd in the mantle wedge. Our results highlight the influence of the subduction-related processes and mantle wedge refertilization on the noble metal budgets of arc magmas.

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Citations by journals

	1 2 3
Minerals	Minerals, 3, 42.86% Minerals 3 publications, 42.86%
Geosciences (Switzerland)	Geosciences (Switzerland), 2, 28.57% Geosciences (Switzerland) 2 publications, 28.57%
Applied Earth Science: Transactions of the Institute of Mining and Metallurgy	Applied Earth Science: Transactions of the Institute of Mining and Metallurgy, 1, 14.29% Applied Earth Science: Transactions of the Institute of Mining and Metallurgy 1 publication, 14.29%
American Mineralogist	American Mineralogist, 1, 14.29% American Mineralogist 1 publication, 14.29%
	1 2 3

Citations by publishers

	1 2 3 4 5
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 5, 71.43% Multidisciplinary Digital Publishing Institute (MDPI) 5 publications, 71.43%
Taylor & Francis	Taylor & Francis, 1, 14.29% Taylor & Francis 1 publication, 14.29%
Walter de Gruyter	Walter de Gruyter, 1, 14.29% Walter de Gruyter 1 publication, 14.29%
	1 2 3 4 5

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Kutyrev A. et al. Noble Metals in Arc Basaltic Magmas Worldwide: A Case Study of Modern and Pre-Historic Lavas of the Tolbachik Volcano, Kamchatka // Frontiers in Earth Science. 2021. Vol. 9.

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Kutyrev A., Zelenski M., Nekrylov N., Savelyev D., Kontonikas-Charos A., Kamenetsky V. S. Noble Metals in Arc Basaltic Magmas Worldwide: A Case Study of Modern and Pre-Historic Lavas of the Tolbachik Volcano, Kamchatka // Frontiers in Earth Science. 2021. Vol. 9.

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RIS Copy

TY - JOUR

DO - 10.3389/feart.2021.791465

UR - https://doi.org/10.3389%2Ffeart.2021.791465

TI - Noble Metals in Arc Basaltic Magmas Worldwide: A Case Study of Modern and Pre-Historic Lavas of the Tolbachik Volcano, Kamchatka

T2 - Frontiers in Earth Science

AU - Kutyrev, Anton

AU - Zelenski, Michael

AU - Nekrylov, Nikolai

AU - Savelyev, Dmitry

AU - Kontonikas-Charos, Alkiviadis

AU - Kamenetsky, Vadim S.

PY - 2021

DA - 2021/12/02 00:00:00

PB - Frontiers Media S.A.

VL - 9

SN - 2296-6463

ER -

BibTex

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@article{2021_Kutyrev,

author = {Anton Kutyrev and Michael Zelenski and Nikolai Nekrylov and Dmitry Savelyev and Alkiviadis Kontonikas-Charos and Vadim S. Kamenetsky},

title = {Noble Metals in Arc Basaltic Magmas Worldwide: A Case Study of Modern and Pre-Historic Lavas of the Tolbachik Volcano, Kamchatka},

journal = {Frontiers in Earth Science},

year = {2021},

volume = {9},

publisher = {Frontiers Media S.A.},

month = {dec},

url = {https://doi.org/10.3389%2Ffeart.2021.791465},

doi = {10.3389/feart.2021.791465}

}

Found error?

Publisher

Frontiers Media S.A.

Journal

Frontiers in Earth Science

Quartile SCImago

Quartile WOS

Impact factor

2.9

ISSN

22966463 (Electronic)

News

Ученые выяснили, что общего у камчатского вулкана и Норильского месторождения