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Melt migration in deformable media

Stevenson, D. J. and Scott, D. R. (1987) Melt migration in deformable media. In: Structure and dynamics of partially solidified systems. NATO ASI series E. No.125. Martinus Nijhoff Publishers , Dordrecht, pp. 401-415. ISBN 9789024735006.

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Extraction of melt from partial melts in the Earth's interior requires both permeability and deformability of the solid matrix. With the aid of simple macroscopic analogs, including laboratory experiments, we show how creep deformation of the matrix can be incorporated in Darcy's Law, leading to a quantitative assessment of how matrix compaction governs melt extraction. The most striking consequence of the resulting theory is the prediction of magmons: well-preserved, solitary waves of enhanced partial melt with wavelengths ~ kilometer. These vertically propagating waves might exist in the Earth's mantle, causing episodicity in space and time of volcanic activity. However, geophysical and geochemical evidence remain elusive.

Item Type:Book Section
Stevenson, D. J.0000-0001-9432-7159
Additional Information:© 1987 Martinus Nijhoff. This work is supported by NSF Experimental and Theoretical Geophysics, grant EAR-8418353.
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Caltech Division of Geological and Planetary Sciences4352
Series Name:NATO ASI series E
Issue or Number:125
Record Number:CaltechAUTHORS:20130731-095958387
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39672
Deposited By: Tony Diaz
Deposited On:20 Sep 2013 20:28
Last Modified:03 Oct 2019 05:09

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