Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland
Mafic magmas may experience multiple stages of sulfide saturation and resorption during ascent and differentiation. Quenched tephra erupted during the 2014-15 Holuhraun eruption preserve abundant evidence for sulfide resorption, offering a rare opportunity to explore the sulfide life cycle from nucl...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/364833 2024-05-19T07:42:49+00:00 Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland Nicholson, Emma Wieser, Penny Hartley, Margaret Jenner, Frances Kunz, Barbara Ilyinskaya, Evgenia Thordarson, Thorvaldur Edmonds, Marie 2024-02-23T00:31:02Z application/pdf https://www.repository.cam.ac.uk/handle/1810/364833 https://doi.org/10.17863/CAM.106377 eng eng Nature Portfolio Department of Earth Sciences Communications Earth and Environment https://www.repository.cam.ac.uk/handle/1810/364833 https://doi.org/10.17863/CAM.106377 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Article 2024 ftunivcam https://doi.org/10.17863/CAM.106377 2024-05-01T23:31:04Z Mafic magmas may experience multiple stages of sulfide saturation and resorption during ascent and differentiation. Quenched tephra erupted during the 2014-15 Holuhraun eruption preserve abundant evidence for sulfide resorption, offering a rare opportunity to explore the sulfide life cycle from nucleation to resorption. Specifically, we combine detailed textural and chemical analyses of sulfides and silicate melts with geochemical models of sulfide saturation and degassing. This integrative approach demonstrates that sulfides began nucleating in melt with ~8 wt% MgO, persisted during fractionation to 6.5 wt% MgO, before resorbing heterogeneously in response to sulfur degassing. Sulfides are preserved preferentially in confined geometries within and between crystals, suggesting that kinetic effects impeded sulfur loss from the melt and maintained local sulfide saturation on eruption. The proportion of sulfides exhibiting breakdown textures increases throughout the eruption, coincident with decreasing magma discharge, indicating that sulfide resorption and degassing are kinetically limited. Sulfides likely modulate the emission of sulfur and chalcophile elements to the atmosphere and surface environment, with implications for assessing the environmental impacts and societal hazards of basaltic fissure eruptions. NERC Article in Journal/Newspaper Iceland Apollo - University of Cambridge Repository |
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Apollo - University of Cambridge Repository |
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ftunivcam |
language |
English |
description |
Mafic magmas may experience multiple stages of sulfide saturation and resorption during ascent and differentiation. Quenched tephra erupted during the 2014-15 Holuhraun eruption preserve abundant evidence for sulfide resorption, offering a rare opportunity to explore the sulfide life cycle from nucleation to resorption. Specifically, we combine detailed textural and chemical analyses of sulfides and silicate melts with geochemical models of sulfide saturation and degassing. This integrative approach demonstrates that sulfides began nucleating in melt with ~8 wt% MgO, persisted during fractionation to 6.5 wt% MgO, before resorbing heterogeneously in response to sulfur degassing. Sulfides are preserved preferentially in confined geometries within and between crystals, suggesting that kinetic effects impeded sulfur loss from the melt and maintained local sulfide saturation on eruption. The proportion of sulfides exhibiting breakdown textures increases throughout the eruption, coincident with decreasing magma discharge, indicating that sulfide resorption and degassing are kinetically limited. Sulfides likely modulate the emission of sulfur and chalcophile elements to the atmosphere and surface environment, with implications for assessing the environmental impacts and societal hazards of basaltic fissure eruptions. NERC |
format |
Article in Journal/Newspaper |
author |
Nicholson, Emma Wieser, Penny Hartley, Margaret Jenner, Frances Kunz, Barbara Ilyinskaya, Evgenia Thordarson, Thorvaldur Edmonds, Marie |
spellingShingle |
Nicholson, Emma Wieser, Penny Hartley, Margaret Jenner, Frances Kunz, Barbara Ilyinskaya, Evgenia Thordarson, Thorvaldur Edmonds, Marie Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland |
author_facet |
Nicholson, Emma Wieser, Penny Hartley, Margaret Jenner, Frances Kunz, Barbara Ilyinskaya, Evgenia Thordarson, Thorvaldur Edmonds, Marie |
author_sort |
Nicholson, Emma |
title |
Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland |
title_short |
Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland |
title_full |
Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland |
title_fullStr |
Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland |
title_full_unstemmed |
Sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 Holuhraun eruption, Iceland |
title_sort |
sulfide saturation and resorption modulates sulfur and metal availability during the 2014-15 holuhraun eruption, iceland |
publisher |
Nature Portfolio |
publishDate |
2024 |
url |
https://www.repository.cam.ac.uk/handle/1810/364833 https://doi.org/10.17863/CAM.106377 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/364833 https://doi.org/10.17863/CAM.106377 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.106377 |
_version_ |
1799482516737884160 |