Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi
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...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Nature
2020
|
Subjects: | |
Online Access: | http://livrepository.liverpool.ac.uk/3074658/ https://www.nature.com/articles/s41467-019-13635-y http://livrepository.liverpool.ac.uk/3074658/1/Microstructural%20constraints%20on%20magmatic%20mushes%20under%20K%C4%ABlauea%20Volcano,%20Hawaii.pdf |
id |
ftunivliverpool:oai:livrepository.liverpool.ac.uk:3074658 |
---|---|
record_format |
openpolar |
spelling |
ftunivliverpool:oai:livrepository.liverpool.ac.uk:3074658 2023-05-15T16:49:29+02:00 Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi Wieser, Penny E Edmonds, Marie Maclennan, John Wheeler, John 2020-01-07 text http://livrepository.liverpool.ac.uk/3074658/ https://www.nature.com/articles/s41467-019-13635-y http://livrepository.liverpool.ac.uk/3074658/1/Microstructural%20constraints%20on%20magmatic%20mushes%20under%20K%C4%ABlauea%20Volcano,%20Hawaii.pdf en eng eng Springer Nature http://livrepository.liverpool.ac.uk/3074658/1/Microstructural%20constraints%20on%20magmatic%20mushes%20under%20K%C4%ABlauea%20Volcano,%20Hawaii.pdf Wieser, Penny E, Edmonds, Marie, Maclennan, John and Wheeler, John orcid:0000-0002-7576-4465 (2020) Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi. Nature Communications, 11 (1). 14-. Article NonPeerReviewed 2020 ftunivliverpool 2023-01-19T23:52:20Z 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 The University of Liverpool Repository |
institution |
Open Polar |
collection |
The University of Liverpool Repository |
op_collection_id |
ftunivliverpool |
language |
English |
description |
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 |
spellingShingle |
Wieser, Penny E Edmonds, Marie Maclennan, John Wheeler, John Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi |
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 Nature |
publishDate |
2020 |
url |
http://livrepository.liverpool.ac.uk/3074658/ https://www.nature.com/articles/s41467-019-13635-y http://livrepository.liverpool.ac.uk/3074658/1/Microstructural%20constraints%20on%20magmatic%20mushes%20under%20K%C4%ABlauea%20Volcano,%20Hawaii.pdf |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://livrepository.liverpool.ac.uk/3074658/1/Microstructural%20constraints%20on%20magmatic%20mushes%20under%20K%C4%ABlauea%20Volcano,%20Hawaii.pdf Wieser, Penny E, Edmonds, Marie, Maclennan, John and Wheeler, John orcid:0000-0002-7576-4465 (2020) Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi. Nature Communications, 11 (1). 14-. |
_version_ |
1766039614609424384 |