Abstract
The extent and seismic properties of magma bodies beneath the subsurface
are normally ascertained via seismic methods. The seismic properties
of such bodies depend on the composition and microstructure of both
melt and crystals. Using effective medium theory, we assess the effect
of microstructure, geometry and orientation of melt and crystals
on the seismic properties, namely P- and S-wave velocities and anisotropy.
We find that S-wave velocity and anisotropy are key observables in
determining the composition and microstructure of magma bodies.
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