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← GeographyWhich outcome is enhanced due to flux melting?
A)Magma viscosity at subduction zones✓
B)Seismic wave propagation speed
C)Erosion rate in shield volcanoes
D)Geothermal vent chemical equilibrium stability
💡 Explanation
Magma viscosity is directly related to flux melting; the introduction of volatiles, such as water, lowers the melting point of the mantle wedge. This decreased melting reduces viscosity, because the silicate structures are disrupted by the added water molecules; therefore magma flows more easily, rather than solidifying quickly.
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