John Seach, Volcano Live

 Polybaric Near-Fractional Melting - John Seach

During magma ascent through the earth's mantle the melt may separate from the mantle causing a change in the composition of the system. As long as equilibrium does not occur the fractions will still maintain the pressure signal of the original conditions. This is called polybaric near-fractional melting.

Polybaric Near-Fractional Melting
Copyright John Seach