Fig. 12From: Some remarks on hydrogen-assisted electrical conductivity in olivine and other mineralsTwo possible models that might explain geophysical anomalies (low seismic wave velocities and high electrical conductivity) by partial melting. a Accumulation of melt at the lithosphere-asthenosphere boundary (after Hirschmann 2010). b Presence of melt-rich layers (after Kawakatsu et al. 2009)Back to article page