Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi
Abstract Distorted olivines of enigmatic origin are ubiquitous in erupted products from a wide range of volcanic systems (e.g., Hawaiʻi, Iceland, Andes). Investigation of these features at Kīlauea Volcano, Hawaiʻi, using an integrative crystallographic and chemical approach places quantitative const...
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Online Access: | http://dx.doi.org/10.1038/s41467-019-13635-y http://www.nature.com/articles/s41467-019-13635-y.pdf http://www.nature.com/articles/s41467-019-13635-y |
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crspringernat:10.1038/s41467-019-13635-y 2023-05-15T16:49:59+02:00 Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi Wieser, Penny E. Edmonds, Marie Maclennan, John Wheeler, John 2020 http://dx.doi.org/10.1038/s41467-019-13635-y http://www.nature.com/articles/s41467-019-13635-y.pdf http://www.nature.com/articles/s41467-019-13635-y en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 11, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2020 crspringernat https://doi.org/10.1038/s41467-019-13635-y 2022-01-04T16:09:15Z Abstract Distorted olivines of enigmatic origin are ubiquitous in erupted products from a wide range of volcanic systems (e.g., Hawaiʻi, Iceland, Andes). Investigation of these features at Kīlauea Volcano, Hawaiʻi, using an integrative crystallographic and chemical approach places quantitative constraints on mush pile thicknesses. Electron backscatter diffraction (EBSD) reveals that the microstructural features of distorted olivines, whose chemical composition is distinct from undistorted olivines, are remarkably similar to olivines within deformed mantle peridotites, but inconsistent with an origin from dendritic growth. This, alongside the spatial distribution of distorted grains and the absence of adcumulate textures, suggests that olivines were deformed within melt-rich mush piles accumulating within the summit reservoir. Quantitative analysis of subgrain geometry reveals that olivines experienced differential stresses of ∼3–12 MPa, consistent with their storage in mush piles with thicknesses of a few hundred metres. Overall, our microstructural analysis of erupted crystals provides novel insights into mush-rich magmatic systems. Article in Journal/Newspaper Iceland Springer Nature (via Crossref) Nature Communications 11 1 |
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Springer Nature (via Crossref) |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Wieser, Penny E. Edmonds, Marie Maclennan, John Wheeler, John Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract Distorted olivines of enigmatic origin are ubiquitous in erupted products from a wide range of volcanic systems (e.g., Hawaiʻi, Iceland, Andes). Investigation of these features at Kīlauea Volcano, Hawaiʻi, using an integrative crystallographic and chemical approach places quantitative constraints on mush pile thicknesses. Electron backscatter diffraction (EBSD) reveals that the microstructural features of distorted olivines, whose chemical composition is distinct from undistorted olivines, are remarkably similar to olivines within deformed mantle peridotites, but inconsistent with an origin from dendritic growth. This, alongside the spatial distribution of distorted grains and the absence of adcumulate textures, suggests that olivines were deformed within melt-rich mush piles accumulating within the summit reservoir. Quantitative analysis of subgrain geometry reveals that olivines experienced differential stresses of ∼3–12 MPa, consistent with their storage in mush piles with thicknesses of a few hundred metres. Overall, our microstructural analysis of erupted crystals provides novel insights into mush-rich magmatic systems. |
format |
Article in Journal/Newspaper |
author |
Wieser, Penny E. Edmonds, Marie Maclennan, John Wheeler, John |
author_facet |
Wieser, Penny E. Edmonds, Marie Maclennan, John Wheeler, John |
author_sort |
Wieser, Penny E. |
title |
Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
title_short |
Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
title_full |
Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
title_fullStr |
Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
title_full_unstemmed |
Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
title_sort |
microstructural constraints on magmatic mushes under kīlauea volcano, hawaiʻi |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41467-019-13635-y http://www.nature.com/articles/s41467-019-13635-y.pdf http://www.nature.com/articles/s41467-019-13635-y |
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Iceland |
genre_facet |
Iceland |
op_source |
Nature Communications volume 11, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-019-13635-y |
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Nature Communications |
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11 |
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1 |
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1766040152454463488 |