Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ...
Plagioclase textures were investigated in the products of the voluminous AD 1783–1784 Laki eruption from the Eastern Volcanic Zone (EVZ) of Iceland to establish whether mush disaggregation occurred solely at the onset of the eight-month eruption or throughout its whole duration. Phase proportions an...
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Mineralogical Society of America
2017
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Online Access: | https://dx.doi.org/10.17863/cam.10513 https://www.repository.cam.ac.uk/handle/1810/266946 |
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ftdatacite:10.17863/cam.10513 2024-02-27T08:41:54+00:00 Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... Neave, DA Buisman, I Maclennan, JC 2017 https://dx.doi.org/10.17863/cam.10513 https://www.repository.cam.ac.uk/handle/1810/266946 en eng Mineralogical Society of America open.access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 mush disaggregation basalt automated mineralogy crystal size distributions textures article-journal ScholarlyArticle JournalArticle Article 2017 ftdatacite https://doi.org/10.17863/cam.10513 2024-02-01T14:57:31Z Plagioclase textures were investigated in the products of the voluminous AD 1783–1784 Laki eruption from the Eastern Volcanic Zone (EVZ) of Iceland to establish whether mush disaggregation occurred solely at the onset of the eight-month eruption or throughout its whole duration. Phase proportions and plagioclase size distributions were determined using standard optical and manual techniques as well as automated approaches based on Quantitative Evaluation of Minerals by SCANing electron microscopy (QEMSCAN). Based on optical microscopy and the explicit combination of textural and compositional information in QEMSCAN images, plagioclase crystals were divided into two populations: small (<0.5 mm long), high-aspect ratio (length/width > 4) microcrysts with low-anorthite (0.5 mm long), low-aspect ratio(length/width = 2–3) macrocrysts with high-anorthite (An₈₄–An₉₂) cores. Small microcrysts grew from their carrier liquid during the final phase of pre-eruptive crystallization while large macrocrysts, which ... Article in Journal/Newspaper Iceland DataCite Metadata Store (German National Library of Science and Technology) Laki ENVELOPE(-18.237,-18.237,64.070,64.070) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
mush disaggregation basalt automated mineralogy crystal size distributions textures |
spellingShingle |
mush disaggregation basalt automated mineralogy crystal size distributions textures Neave, DA Buisman, I Maclennan, JC Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... |
topic_facet |
mush disaggregation basalt automated mineralogy crystal size distributions textures |
description |
Plagioclase textures were investigated in the products of the voluminous AD 1783–1784 Laki eruption from the Eastern Volcanic Zone (EVZ) of Iceland to establish whether mush disaggregation occurred solely at the onset of the eight-month eruption or throughout its whole duration. Phase proportions and plagioclase size distributions were determined using standard optical and manual techniques as well as automated approaches based on Quantitative Evaluation of Minerals by SCANing electron microscopy (QEMSCAN). Based on optical microscopy and the explicit combination of textural and compositional information in QEMSCAN images, plagioclase crystals were divided into two populations: small (<0.5 mm long), high-aspect ratio (length/width > 4) microcrysts with low-anorthite (0.5 mm long), low-aspect ratio(length/width = 2–3) macrocrysts with high-anorthite (An₈₄–An₉₂) cores. Small microcrysts grew from their carrier liquid during the final phase of pre-eruptive crystallization while large macrocrysts, which ... |
format |
Article in Journal/Newspaper |
author |
Neave, DA Buisman, I Maclennan, JC |
author_facet |
Neave, DA Buisman, I Maclennan, JC |
author_sort |
Neave, DA |
title |
Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... |
title_short |
Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... |
title_full |
Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... |
title_fullStr |
Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... |
title_full_unstemmed |
Continuous mush disaggregation during the long-lasting Laki fissure eruption, Iceland ... |
title_sort |
continuous mush disaggregation during the long-lasting laki fissure eruption, iceland ... |
publisher |
Mineralogical Society of America |
publishDate |
2017 |
url |
https://dx.doi.org/10.17863/cam.10513 https://www.repository.cam.ac.uk/handle/1810/266946 |
long_lat |
ENVELOPE(-18.237,-18.237,64.070,64.070) |
geographic |
Laki |
geographic_facet |
Laki |
genre |
Iceland |
genre_facet |
Iceland |
op_rights |
open.access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.10513 |
_version_ |
1792049252740890624 |