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    Magma plumbing systems: a geophysical perspective

    Magee, C. and Stevenson, C.T.E and Ebmeier, S.K. and Keir, D. and Hammond, James O.S. and Gottsmann, J.H. and Whaler, K.A. and Schofield, N. and Jackson, C.A.-L. and Petronis, M.S. and O’Driscoll, B. and Morgan, J. and Cruden, A. and Vollgger, S.A. and Dering, G. and Micklethwaite, S. and Jackson, M.D. (2018) Magma plumbing systems: a geophysical perspective. Journal of Petrology 59 (6), pp. 1217-1251. ISSN 0022-3530.

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    REV_Magee et al. - P2 - Geophysics and magma plumbing systems_accepted_2.pdf - Author's Accepted Manuscript
    Restricted to Repository staff only until 24 June 2019.

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    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.

    Metadata

    Item Type: Article
    Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication following peer review. The version of record is available online at the link above.
    School: Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences > UCL/Birkbeck Centre for Planetary Sciences
    Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences
    Depositing User: James Hammond
    Date Deposited: 26 Jul 2018 12:47
    Last Modified: 09 Oct 2018 10:26
    URI: http://eprints.bbk.ac.uk/id/eprint/23336

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