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dc.contributor.authorWieser, Penelopeen
dc.contributor.authorLamadrid, Hen
dc.contributor.authorMaclennan, Johnen
dc.contributor.authorEdmonds, Marieen
dc.contributor.authorMatthews, Sen
dc.contributor.authorIacovino, Ken
dc.contributor.authorJenner, FEen
dc.contributor.authorGansecki, Cen
dc.contributor.authorTrusdell, Fen
dc.contributor.authorLee, RLen
dc.contributor.authorIlyinskaya, Een
dc.date.accessioned2020-12-11T12:35:45Z
dc.date.available2020-12-11T12:35:45Z
dc.date.issued2021-02-01en
dc.identifier.issn1525-2027
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/315001
dc.description.abstractThe 2018 lower East Rift Zone (LERZ) eruption and the accompanying collapse of the summit caldera marked the most destructive episode of activity at Kīlauea Volcano in the last 200 years. The eruption was extremely well-monitored, with extensive real-time lava sampling as well as continuous geodetic data capturing the caldera collapse. This multi-parameter dataset provides an exceptional opportunity to determine the reservoir geometry and magma transport paths supplying Kīlauea’s LERZ. The forsterite contents of olivine crystals, together with the degree of major element disequilibrium with carrier melts, indicates that two distinct crystal populations were erupted from Fissure 8 (termed High- and Low-Fo). Melt inclusion entrapment pressures reveal that Low-Fo olivines (close to equilibrium with their carrier melts) crystallized within the Halema’uma’u reservoir (~2 km depth), while many High-Fo olivines (>Fo81.5; far from equilibrium with their carrier melts) crystallized within the South Caldera reservoir (~3--5 km depth). Melt inclusions in High-Fo olivines experienced extensive post-entrapment crystallization following their incorporation into cooler, more evolved melts. This favoured the growth of a CO2-rich vapor bubble, containing up to 99% of the total melt inclusion CO2 budget (median=93%). If this CO2-rich bubble is not accounted for, entrapment depths are significantly underestimated. Conversely, reconstructions using equation of state methods rather than direct measurements of vapor bubbles overestimate entrapment depths. Overall, we show that direct measurements of melts and vapor bubbles by SIMS and Raman Spectroscopy, combined with a suitable H2O-CO2 solubility model, is a powerful tool to identify the magma storage reservoirs supplying volcanic eruptions.
dc.publisherAmerican Geophysical Union
dc.rightsAll rights reserved
dc.rights.uri
dc.titleReconstructing Magma Storage Depths for the 2018 Kı̄lauean Eruption From Melt Inclusion CO<inf>2</inf> Contents: The Importance of Vapor Bubblesen
dc.typeArticle
prism.issueIdentifier2en
prism.publicationDate2021en
prism.publicationNameGeochemistry, Geophysics, Geosystemsen
prism.volume22en
dc.identifier.doi10.17863/CAM.62108
dcterms.dateAccepted2020-12-04en
rioxxterms.versionofrecord10.1029/2020GC009364en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2021-02-01en
dc.contributor.orcidWieser, Penelope [0000-0002-1070-8323]
dc.contributor.orcidLamadrid, H [0000-0002-0903-7382]
dc.contributor.orcidMaclennan, John [0000-0001-6857-9600]
dc.contributor.orcidEdmonds, Marie [0000-0003-1243-137X]
dc.contributor.orcidIacovino, K [0000-0002-2461-7748]
dc.contributor.orcidGansecki, C [0000-0001-5581-9097]
dc.contributor.orcidIlyinskaya, E [0000-0002-3663-9506]
dc.identifier.eissn1525-2027
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idNERC (1928862)
pubs.funder-project-idNERC (NE/L002507/1)
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.60202
cam.orpheus.successMon Dec 21 07:30:33 GMT 2020 - Embargo updated*
cam.orpheus.counter1*
rioxxterms.freetoread.startdate2021-06-14


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