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dc.contributor.author
Crozier, Josh
dc.contributor.author
Tramontano, Samantha
dc.contributor.author
Forte, Pablo Brian
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Oliva, Sarah Jaye C.
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Gonnermann, Helge M.
dc.contributor.author
Lev, Einat
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Manga, Michael
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Myers, Madison
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Rader, Erika
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Ruprecht, Philipp
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Tuffen, Hugh
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Paisley, Rebecca
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Houghton, Bruce F.
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Shea, Thomas
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Schipper, C. Ian
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Castro, Jonathan M.
dc.date.available
2023-08-03T12:07:05Z
dc.date.issued
2022-07
dc.identifier.citation
Crozier, Josh; Tramontano, Samantha; Forte, Pablo Brian; Oliva, Sarah Jaye C.; Gonnermann, Helge M.; et al.; Outgassing through magmatic fractures enables effusive eruption of silicic magma; Elsevier Science; Journal of Volcanology and Geothermal Research; 430; 7-2022; 1-20
dc.identifier.issn
0377-0273
dc.identifier.uri
http://hdl.handle.net/11336/206696
dc.description.abstract
Several mechanisms have been proposed to allow highly viscous silicic magma to outgas efficiently enough to erupt effusively. There is increasing evidence that challenges the classic foam-collapse model in which gas escapes through permeable bubble networks, and instead suggests that magmatic fracturing and/or accompanying localized fragmentation and welding within the conduit play an important role in outgassing. The 2011–2012 eruption at Cordón Caulle volcano, Chile, provides direct observations of the role of magmatic fractures. This eruption exhibited a months-long hybrid phase, in which rhyolitic lava extrusion was accompanied by vigorous gas-and-tephra venting through fractures in the lava dome surface. Some of these fractures were preserved as tuffisites (tephra-filled veins) in erupted lava and bombs. We integrate constraints from petrologic analyses of erupted products and video analyses of gas-and-tephra venting to construct a model for magma ascent in a conduit. The one-dimensional, two-phase, steady-state model considers outgassing through deforming permeable bubble networks, magmatic fractures, and adjacent wall rock. Simulations for a range of plausible magma ascent conditions indicate that the eruption of low-porosity lava observed at Cordón Caulle volcano occurs because of significant gas flux through fracture networks in the upper conduit. This modeling emphasizes the important role that outgassing through magmatic fractures plays in sustaining effusive or hybrid eruptions of silicic magma and in facilitating explosive-effusive transitions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
CONDUIT MODEL
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CORDÓN CAULLE VOLCANO
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EXPLOSIVE-EFFUSIVE
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HYBRID ERUPTION
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OUTGASSING
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SILICIC
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TUFFISITE
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Vulcanología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Outgassing through magmatic fractures enables effusive eruption of silicic magma
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-08-02T17:57:34Z
dc.journal.volume
430
dc.journal.pagination
1-20
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Crozier, Josh. United States Geological Survey; Estados Unidos
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Fil: Tramontano, Samantha. City University of New York; Estados Unidos
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Fil: Forte, Pablo Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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Fil: Oliva, Sarah Jaye C.. University of Victoria; Canadá
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Fil: Gonnermann, Helge M.. Rice University; Estados Unidos
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Fil: Lev, Einat. Columbia Lamont-doherty Earth Observatory; Estados Unidos
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Fil: Manga, Michael. University of California at Berkeley; Estados Unidos
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Fil: Myers, Madison. State University of Montana; Estados Unidos
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Fil: Rader, Erika. University of Idaho; Estados Unidos
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Fil: Ruprecht, Philipp. University Of Nevada At Reno; Estados Unidos
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Fil: Tuffen, Hugh. Lancaster University; Reino Unido
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Fil: Paisley, Rebecca. No especifíca;
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Fil: Houghton, Bruce F.. University of Hawaii at Manoa; Estados Unidos
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Fil: Shea, Thomas. University of Hawaii at Manoa; Estados Unidos
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Fil: Schipper, C. Ian. Victoria University Of Wellington; Nueva Zelanda
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Fil: Castro, Jonathan M.. Johannes Gutenberg Universitat Mainz; Alemania
dc.journal.title
Journal of Volcanology and Geothermal Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jvolgeores.2022.107617
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