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dc.contributor.authorHornby, Adrian J.
dc.contributor.authorAyris, Paul M.
dc.contributor.authorDamby, David E.
dc.contributor.authorDiplas, Spyridon
dc.contributor.authorEychenne, Julia
dc.contributor.authorKendrick, Jackie E.
dc.contributor.authorCimarelli, Corrado
dc.contributor.authorKueppers, Ulrich
dc.contributor.authorScheu, Bettina
dc.contributor.authorUtley, James E. P.
dc.contributor.authorDingwell, Donald B.
dc.date.accessioned2024-09-23T12:45:03Z
dc.date.available2024-09-23T12:45:03Z
dc.date.created2024-02-16T11:11:49Z
dc.date.issued2024
dc.identifier.citationNature Communications. 2024, 15 (1): 531.en_US
dc.identifier.issn2041-1723
dc.identifier.urihttps://hdl.handle.net/11250/3153785
dc.description.abstractExplosive volcanic eruptions produce vast quantities of silicate ash, whose surfaces are subsequently altered during atmospheric transit. These altered surfaces mediate environmental interactions, including atmospheric ice nucleation, and toxic effects in biota. A lack of knowledge of the initial, pre-altered ash surface has required previous studies to assume that the ash surface composition created during magmatic fragmentation is equivalent to the bulk particle assemblage. Here we examine ash particles generated by controlled fragmentation of andesite and find that fragmentation generates ash particles with substantial differences in surface chemistry. We attribute this disparity to observations of nanoscale melt heterogeneities, in which Fe-rich nanophases in the magmatic melt deflect and blunt fractures, thereby focusing fracture propagation within aureoles of single-phase melt formed during diffusion-limited growth of crystals. In this manner, we argue that commonly observed pre-eruptive microtextures caused by disequilibrium crystallisation and/or melt unmixing can modify fracture propagation and generate primary discrepancies in ash surface chemistry, an essential consideration for understanding the cascading consequences of reactive ash surfaces in various environments.en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleNanoscale silicate melt textures determine volcanic ash surface chemistryen_US
dc.title.alternativeNanoscale silicate melt textures determine volcanic ash surface chemistryen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© The Author(s) 2024. Published by Springer Nature.en_US
dc.source.pagenumber10en_US
dc.source.volume15en_US
dc.source.journalNature Communicationsen_US
dc.source.issue1en_US
dc.identifier.doi10.1038/s41467-024-44712-6
dc.identifier.cristin2246730
dc.source.articlenumber531en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal