Tracking bubble evolution inside a silicic dike

Antonio M. Álvarez-Valero; Satoshi Okumura; Fabio Arzilli; Javier Borrajo; Clemente Recio; Masao Ban; Juan C. Gonzalo; José M. Benítez; Madison Douglas; Osamu Sasaki; Piedad Franco; Juan Gómez-Barreiro; Asunción Carnicero

doi:10.1016/j.lithos.2016.08.012

Tracking bubble evolution inside a silicic dike

Antonio M. Álvarez-Valero^*, Satoshi Okumura, Fabio Arzilli, Javier Borrajo, Clemente Recio, Masao Ban, Juan C. Gonzalo, José M. Benítez, Madison Douglas, Osamu Sasaki, Piedad Franco, Juan Gómez-Barreiro, Asunción Carnicero

^*Corresponding author for this work

The University of Manchester

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Abstract

Pressure estimates from rapidly erupted crustal xenoliths constrain the depth of intrusion of the silicic lavas hosting them. This represents an opportunity for tracking magmatic bubble's evolution and quantifying the variation in bubble volume during rapid magma ascent through a volcanic dike just prior to eruption. The petrology, stable-isotope geochemistry and X-ray micro-tomography of dacites containing crustal xenoliths, erupted from a Neogene volcano in SE Spain, showed an increase in porosity from ~ 1.7 to 6.4% from ~ 19 to 13 km depth, at nearly constant groundmass and crystal volumes. This result provides additional constraints for experimental and numerical simulations of subvolcanic magma-crust degassing processes in silicic systems, and may allow the characterization of volcanic eruptive styles based on volatile content.

Original language	English
Pages (from-to)	668-676
Number of pages	9
Journal	Lithos
Volume	262
Early online date	16 Aug 2016
DOIs	https://doi.org/10.1016/j.lithos.2016.08.012
Publication status	Published - 1 Oct 2016

Keywords

Conduit depths
Crustal xenoliths
Dacite
Stable isotopes
Volcanic bubbles
X-ray micro-tomography

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10.1016/j.lithos.2016.08.012

Avarez-Valero et al 2016Accepted author manuscript, 1.72 MB

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title = "Tracking bubble evolution inside a silicic dike",

abstract = "Pressure estimates from rapidly erupted crustal xenoliths constrain the depth of intrusion of the silicic lavas hosting them. This represents an opportunity for tracking magmatic bubble's evolution and quantifying the variation in bubble volume during rapid magma ascent through a volcanic dike just prior to eruption. The petrology, stable-isotope geochemistry and X-ray micro-tomography of dacites containing crustal xenoliths, erupted from a Neogene volcano in SE Spain, showed an increase in porosity from ~ 1.7 to 6.4% from ~ 19 to 13 km depth, at nearly constant groundmass and crystal volumes. This result provides additional constraints for experimental and numerical simulations of subvolcanic magma-crust degassing processes in silicic systems, and may allow the characterization of volcanic eruptive styles based on volatile content.",

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doi = "10.1016/j.lithos.2016.08.012",

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AU - Álvarez-Valero, Antonio M.

AU - Okumura, Satoshi

AU - Arzilli, Fabio

AU - Borrajo, Javier

AU - Recio, Clemente

AU - Ban, Masao

AU - Gonzalo, Juan C.

AU - Benítez, José M.

AU - Douglas, Madison

AU - Sasaki, Osamu

AU - Franco, Piedad

AU - Gómez-Barreiro, Juan

AU - Carnicero, Asunción

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Pressure estimates from rapidly erupted crustal xenoliths constrain the depth of intrusion of the silicic lavas hosting them. This represents an opportunity for tracking magmatic bubble's evolution and quantifying the variation in bubble volume during rapid magma ascent through a volcanic dike just prior to eruption. The petrology, stable-isotope geochemistry and X-ray micro-tomography of dacites containing crustal xenoliths, erupted from a Neogene volcano in SE Spain, showed an increase in porosity from ~ 1.7 to 6.4% from ~ 19 to 13 km depth, at nearly constant groundmass and crystal volumes. This result provides additional constraints for experimental and numerical simulations of subvolcanic magma-crust degassing processes in silicic systems, and may allow the characterization of volcanic eruptive styles based on volatile content.

AB - Pressure estimates from rapidly erupted crustal xenoliths constrain the depth of intrusion of the silicic lavas hosting them. This represents an opportunity for tracking magmatic bubble's evolution and quantifying the variation in bubble volume during rapid magma ascent through a volcanic dike just prior to eruption. The petrology, stable-isotope geochemistry and X-ray micro-tomography of dacites containing crustal xenoliths, erupted from a Neogene volcano in SE Spain, showed an increase in porosity from ~ 1.7 to 6.4% from ~ 19 to 13 km depth, at nearly constant groundmass and crystal volumes. This result provides additional constraints for experimental and numerical simulations of subvolcanic magma-crust degassing processes in silicic systems, and may allow the characterization of volcanic eruptive styles based on volatile content.

KW - Conduit depths

KW - Crustal xenoliths

KW - Dacite

KW - Stable isotopes

KW - Volcanic bubbles

KW - X-ray micro-tomography

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DO - 10.1016/j.lithos.2016.08.012

M3 - Article

AN - SCOPUS:84983435721

SN - 0024-4937

VL - 262

SP - 668

EP - 676

JO - Lithos

JF - Lithos

ER -

Tracking bubble evolution inside a silicic dike

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Petrology and volcanology

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Tracking bubble evolution inside a silicic dike

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Petrology and volcanology

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