Magma plumbing systems: a geophysical perspective
File(s)
Author(s)
Type
Journal 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.
Date Issued
2018-06-23
Date Acceptance
2018-06-11
Citation
Journal of Petrology, 2018, 59 (6), pp.1217-1251
ISSN
0022-3530
Publisher
Oxford University Press (OUP)
Start Page
1217
End Page
1251
Journal / Book Title
Journal of Petrology
Volume
59
Issue
6
Copyright Statement
© The Author(s) 2018. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. This is a pre-copy-editing, author-produced version of an article accepted for publication in Journal of Petrology following peer review. The definitive publisher-authenticated version Craig Magee, Carl T E Stevenson, Susanna K Ebmeier, Derek Keir, James O S Hammond, Joachim H Gottsmann, Kathryn A Whaler, Nick Schofield, Christopher A-L Jackson, Michael S Petronis, Brian O’Driscoll, Joanna Morgan, Alexander Cruden, Stefan A Vollgger, Greg Dering, Steven Micklethwaite, Matthew D Jackson, Magma Plumbing Systems: A Geophysical Perspective, Journal of Petrology, Volume 59, Issue 6, June 2018, Pages 1217–1251 is available online at: https://doi.org/10.1093/petrology/egy064
Sponsor
Junior Research Fellowship
The Leverhulme Trust
Sub Salt Solutions
Identifier
https://academic.oup.com/petrology/article/59/6/1217/5043305
Grant Number
RPG-2015-363
EACPR_P73721
Subjects
Science & Technology
Physical Sciences
Geochemistry & Geophysics
magma plumbing systems
geophysical methods
magma flow
melt
mush
LONG VALLEY CALDERA
TELESEISMIC RECEIVER FUNCTIONS
BENEATH VOLCAN UTURUNCU
WAVE-FORM INVERSION
MAGNETIC-SUSCEPTIBILITY
CRUSTAL STRUCTURE
PARTIAL-MELT
ELECTRICAL-CONDUCTIVITY
GROUND DEFORMATION
SEISMIC ANISOTROPY
Energy
0402 Geochemistry
0403 Geology
Publication Status
Published
Date Publish Online
2018-06-23