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Magma plumbing systems: a geophysical perspective

Magma plumbing systems: a geophysical perspective
Magma plumbing systems: a geophysical perspective
Over the last few decades, significant advances in using geophysical techniques to image the structure of magma plumbing systems have enabled the identification of zones of melt accumulation, crystal mush development, and magma migration. Combining advanced geophysical observations with petrological and geochemical data has arguably revolutionised our understanding of, and afforded exciting new insights into, the development of entire magma plumbing systems. However, divisions between the scales and physical settings over which these geophysical, petrological, and geochemical methods are applied still remain. To characterise some of these differences and promote the benefits of further integration between these methodologies, we provide a review of geophysical techniques and discuss how they can be utilised to provide a structural context for and place physical limits on the chemical evolution of magma plumbing systems. For example, we examine how Interferometric Synthetic Aperture Radar (InSAR), coupled with Global Positioning System (GPS) and Global Navigation Satellite System (GNSS) data, and seismicity may be used to track magma migration in near real-time. We also discuss how seismic imaging, gravimetry and electromagnetic data can identify contemporary melt zones, magma reservoirs and/or crystal mushes. These techniques complement seismic reflection data and rock magnetic analyses that delimit the structure and emplacement of ancient magma plumbing systems. For each of these techniques, with the addition of full-waveform inversion (FWI), the use of Unmanned Aerial Vehicles (UAVs) and the integration of geophysics with numerical modelling, we discuss potential future directions. We show that approaching problems concerning magma plumbing systems from an integrated petrological, geochemical, and geophysical perspective will undoubtedly yield important scientific advances, providing exciting future opportunities for the volcanological community.
0022-3530
1217-1251
Magee, Craig
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Stevenson, Carl T.E.
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Ebmeier, Susanna K.
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Keir, Derek
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Hammond, James O.S.
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Gottsman, Joachim H.
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Whaler, Kathryn A.
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Schofield, Nick
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Jackson, Christopher A-L.
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Petronis, Michael S.
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O'Driscoll, Brian
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Morgan, Joanna V.
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Cruden, Alexander
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Vollgger, Stefan A.
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Dering, Greg
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Micklethwaite, Steven
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Jackson, Matthew D.
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Magee, Craig
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Stevenson, Carl T.E.
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Ebmeier, Susanna K.
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Keir, Derek
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Hammond, James O.S.
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Gottsman, Joachim H.
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Whaler, Kathryn A.
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Schofield, Nick
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Jackson, Christopher A-L.
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Petronis, Michael S.
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O'Driscoll, Brian
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Morgan, Joanna V.
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Cruden, Alexander
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Vollgger, Stefan A.
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Dering, Greg
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Micklethwaite, Steven
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Jackson, Matthew D.
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Magee, Craig, Stevenson, Carl T.E., Ebmeier, Susanna K., Keir, Derek, Hammond, James O.S., Gottsman, Joachim H., Whaler, Kathryn A., Schofield, Nick, Jackson, Christopher A-L., Petronis, Michael S., O'Driscoll, Brian, Morgan, Joanna V., Cruden, Alexander, Vollgger, Stefan A., Dering, Greg, Micklethwaite, Steven and Jackson, Matthew D. (2018) Magma plumbing systems: a geophysical perspective. Journal of Petrology, 59 (6), 1217-1251. (doi:10.1093/petrology/egy064).

Record type: Article

Abstract

Over the last few decades, significant advances in using geophysical techniques to image the structure of magma plumbing systems have enabled the identification of zones of melt accumulation, crystal mush development, and magma migration. Combining advanced geophysical observations with petrological and geochemical data has arguably revolutionised our understanding of, and afforded exciting new insights into, the development of entire magma plumbing systems. However, divisions between the scales and physical settings over which these geophysical, petrological, and geochemical methods are applied still remain. To characterise some of these differences and promote the benefits of further integration between these methodologies, we provide a review of geophysical techniques and discuss how they can be utilised to provide a structural context for and place physical limits on the chemical evolution of magma plumbing systems. For example, we examine how Interferometric Synthetic Aperture Radar (InSAR), coupled with Global Positioning System (GPS) and Global Navigation Satellite System (GNSS) data, and seismicity may be used to track magma migration in near real-time. We also discuss how seismic imaging, gravimetry and electromagnetic data can identify contemporary melt zones, magma reservoirs and/or crystal mushes. These techniques complement seismic reflection data and rock magnetic analyses that delimit the structure and emplacement of ancient magma plumbing systems. For each of these techniques, with the addition of full-waveform inversion (FWI), the use of Unmanned Aerial Vehicles (UAVs) and the integration of geophysics with numerical modelling, we discuss potential future directions. We show that approaching problems concerning magma plumbing systems from an integrated petrological, geochemical, and geophysical perspective will undoubtedly yield important scientific advances, providing exciting future opportunities for the volcanological community.

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Magee et al. - P2 - Geophysics and magma plumbing systems_FINAL - Accepted Manuscript
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Accepted/In Press date: 11 June 2018
e-pub ahead of print date: 23 June 2018

Identifiers

Local EPrints ID: 422871
URI: http://eprints.soton.ac.uk/id/eprint/422871
ISSN: 0022-3530
PURE UUID: 793105cf-cb97-4371-9d6c-56fff96c3d9d
ORCID for Derek Keir: ORCID iD orcid.org/0000-0001-8787-8446

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Date deposited: 07 Aug 2018 16:30
Last modified: 26 Nov 2021 05:11

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Contributors

Author: Craig Magee
Author: Carl T.E. Stevenson
Author: Susanna K. Ebmeier
Author: Derek Keir ORCID iD
Author: James O.S. Hammond
Author: Joachim H. Gottsman
Author: Kathryn A. Whaler
Author: Nick Schofield
Author: Christopher A-L. Jackson
Author: Michael S. Petronis
Author: Brian O'Driscoll
Author: Joanna V. Morgan
Author: Alexander Cruden
Author: Stefan A. Vollgger
Author: Greg Dering
Author: Steven Micklethwaite
Author: Matthew D. Jackson

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