Articles | Volume 13, issue 9
Research article
05 Sep 2022
Research article |  | 05 Sep 2022

Assessing the role of thermal disequilibrium in the evolution of the lithosphere–asthenosphere boundary: an idealized model of heat exchange during channelized melt transport

Mousumi Roy

Related subject area

Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Geodynamics and quantitative modelling | Discipline: Tectonics
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Cited articles

Aharonov, E., Whitehead, J., Kelemen, P., and Spiegelman, M.: Channeling instability of upwelling melt in the mantle, J. Geophys. Res.-Solid Ea., 100, 20433–20450, 1995. a
Bo, T., Katz, R. F., Shorttle, O., and Rudge, J. F.: The melting column as a filter of mantle trace-element heterogeneity, Geochem. Geophy. Geosy., 19, 4694–4721, 2018. a, b
Bodinier, J. L., Vasseur, G., Vernie'res, J., Dupuy, C., and Fabrie's, J.: Mechanisms of mantle metasomatism – geochemical evidence from the Lherz orogenic peridotite, J. Petrol., 31, 597–628, 1990. a
Bodinier, J.-L., Garrido, C. J., Chanefo, I., Brugier, O., and Gervilla, F.: Origin of Pyroxenite-Peridotite Veined Mantle by Refertilization Reactions: Evidence from the Ronda Peridotite (Southern Spain), J. Petrol., 49, 999–1025, 2008. a
Carlson, R. W., Irving, A. J., Schulzec, D. J., and Hearn Jr., B. C.: Timing of Precambrian melt depletion and Phanerozoic refertilization events in the lithospheric mantle of the Wyoming Craton and adjacent Central Plains Orogen, Lithos, 77, 453–472, 2004. a
Short summary
This study investigates one of the key processes that may lead to the destruction and destabilization of continental tectonic plates: the infiltration of buoyant, hot, molten rock (magma) into the base of the plate. Using simple calculations, I suggest that heating during melt–rock interaction may thermally perturb the tectonic plate, weakening it and potentially allowing it to be reshaped from beneath. Geochemical, petrologic, and geologic observations are used to guide model parameters.