High Sulfur in Primitive Arc Magmas, Its Origin and Implications
Sulfur contents in 98.5% of melt inclusions (MI) from calc-alkaline subduction basalts do not exceed 4000 ppm, whereas experimentally established limits of sulfur solubility in basaltic melts with high f O 2 (characteristic of subduction zones, e.g., QFM + 2) surpass 14,000 ppm. Here we show that pr...
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2021
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ftdoajarticles:oai:doaj.org/article:c5e37cc3d69e4f0e80a9ce80768c0467 2023-05-15T16:59:15+02:00 High Sulfur in Primitive Arc Magmas, Its Origin and Implications Michael Zelenski Vadim S. Kamenetsky Nikolai Nekrylov Alkiviadis Kontonikas-Charos 2021-12-01T00:00:00Z https://doi.org/10.3390/min12010037 https://doaj.org/article/c5e37cc3d69e4f0e80a9ce80768c0467 EN eng MDPI AG https://www.mdpi.com/2075-163X/12/1/37 https://doaj.org/toc/2075-163X doi:10.3390/min12010037 2075-163X https://doaj.org/article/c5e37cc3d69e4f0e80a9ce80768c0467 Minerals, Vol 12, Iss 37, p 37 (2021) melt inclusion primitive arc basalt high sulfur magmatic anhydrite Mineralogy QE351-399.2 article 2021 ftdoajarticles https://doi.org/10.3390/min12010037 2022-12-30T22:03:17Z Sulfur contents in 98.5% of melt inclusions (MI) from calc-alkaline subduction basalts do not exceed 4000 ppm, whereas experimentally established limits of sulfur solubility in basaltic melts with high f O 2 (characteristic of subduction zones, e.g., QFM + 2) surpass 14,000 ppm. Here we show that primitive (Mg# 62-64) subduction melts may contain high sulfur, approaching the experimental limit of sulfur solubility. Up to 11,700 ppm S was measured in olivine-hosted MI from primitive arc basalt from the 1941 eruption of the Tolbachik volcano, Kamchatka. These MI often contain magmatic sulfide globules (occasionally enriched in Cu, Ni, and platinum-group elements) and anhydrite enclosed within a brown, oxidized glass. We conclude that the ubiquitous low sulfur contents in MI may originate either from insufficient availability of sulfur in the magma generation zone or early magma degassing prior to inclusion entrapment. Our findings extend the measured range of sulfur concentrations in primitive calc-alkaline basaltic melts and demonstrate that no fundamental limit of 4000 ppm S exists for relatively oxidized subduction basalts, where the maximum sulfur content may approach the solubility limit determined by crystallization of magmatic anhydrite. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Tolbachik ENVELOPE(159.960,159.960,55.537,55.537) Minerals 12 1 37 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
melt inclusion primitive arc basalt high sulfur magmatic anhydrite Mineralogy QE351-399.2 |
spellingShingle |
melt inclusion primitive arc basalt high sulfur magmatic anhydrite Mineralogy QE351-399.2 Michael Zelenski Vadim S. Kamenetsky Nikolai Nekrylov Alkiviadis Kontonikas-Charos High Sulfur in Primitive Arc Magmas, Its Origin and Implications |
topic_facet |
melt inclusion primitive arc basalt high sulfur magmatic anhydrite Mineralogy QE351-399.2 |
description |
Sulfur contents in 98.5% of melt inclusions (MI) from calc-alkaline subduction basalts do not exceed 4000 ppm, whereas experimentally established limits of sulfur solubility in basaltic melts with high f O 2 (characteristic of subduction zones, e.g., QFM + 2) surpass 14,000 ppm. Here we show that primitive (Mg# 62-64) subduction melts may contain high sulfur, approaching the experimental limit of sulfur solubility. Up to 11,700 ppm S was measured in olivine-hosted MI from primitive arc basalt from the 1941 eruption of the Tolbachik volcano, Kamchatka. These MI often contain magmatic sulfide globules (occasionally enriched in Cu, Ni, and platinum-group elements) and anhydrite enclosed within a brown, oxidized glass. We conclude that the ubiquitous low sulfur contents in MI may originate either from insufficient availability of sulfur in the magma generation zone or early magma degassing prior to inclusion entrapment. Our findings extend the measured range of sulfur concentrations in primitive calc-alkaline basaltic melts and demonstrate that no fundamental limit of 4000 ppm S exists for relatively oxidized subduction basalts, where the maximum sulfur content may approach the solubility limit determined by crystallization of magmatic anhydrite. |
format |
Article in Journal/Newspaper |
author |
Michael Zelenski Vadim S. Kamenetsky Nikolai Nekrylov Alkiviadis Kontonikas-Charos |
author_facet |
Michael Zelenski Vadim S. Kamenetsky Nikolai Nekrylov Alkiviadis Kontonikas-Charos |
author_sort |
Michael Zelenski |
title |
High Sulfur in Primitive Arc Magmas, Its Origin and Implications |
title_short |
High Sulfur in Primitive Arc Magmas, Its Origin and Implications |
title_full |
High Sulfur in Primitive Arc Magmas, Its Origin and Implications |
title_fullStr |
High Sulfur in Primitive Arc Magmas, Its Origin and Implications |
title_full_unstemmed |
High Sulfur in Primitive Arc Magmas, Its Origin and Implications |
title_sort |
high sulfur in primitive arc magmas, its origin and implications |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/min12010037 https://doaj.org/article/c5e37cc3d69e4f0e80a9ce80768c0467 |
long_lat |
ENVELOPE(159.960,159.960,55.537,55.537) |
geographic |
Tolbachik |
geographic_facet |
Tolbachik |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Minerals, Vol 12, Iss 37, p 37 (2021) |
op_relation |
https://www.mdpi.com/2075-163X/12/1/37 https://doaj.org/toc/2075-163X doi:10.3390/min12010037 2075-163X https://doaj.org/article/c5e37cc3d69e4f0e80a9ce80768c0467 |
op_doi |
https://doi.org/10.3390/min12010037 |
container_title |
Minerals |
container_volume |
12 |
container_issue |
1 |
container_start_page |
37 |
_version_ |
1766051486663442432 |